Suplemento de la Revista Mexicana de Física
https://rmf.smf.mx/ojs/index.php/rmf-s
<p><em><strong>Suplemento de la Revista Mexicana de Física</strong></em> (formerly Revista Mexicana de Física S). As of 2019, it is not anymore linked to Revista Mexicana de Física and instead it is an independent online journal, published by Sociedad Mexicana de Física, A.C. It publishes peer reviewed self-contained volumes on subjects in Physics and related areas as well as selected papers of scientific events in Physics and related areas. Because of its nature, it is a non-periodical journal. It is not yet an indexed publication.</p> <p><strong>General information to send articles to the Special Issues that are <a href="https://rmf.smf.mx/ojs/index.php/rmf-s/announcement">announced</a> in the <em>Suplemento de la Revista Mexicana de Física</em>.</strong></p> <p>To submit an article to Suplemento de la Revista Mexicana de Física <a href="https://rmf.smf.mx/ojs/index.php/rmf-s/user/register">register</a> as an author and upload your work. A LaTeX template can be found in the <a href="https://rmf.smf.mx/ojs/index.php/rmf-s/about/submissions">author's guidelines</a>. However, initially it is only required that authors submit a pdf file to start the evaluation process. Although there is no limit for the number of pages, it is suggested that papers have an extension between 4 and 8 pages under the journal format. Authors can check as an example the <a href="https://rmf.smf.mx/ojs/index.php/rmf-s/issue/view/396">recently published works</a>.</p> <p>The <a href="https://rmf.smf.mx/ojs/index.php/rmf-s/about">review process</a> is the same as the one for works received in Revista Mexicana de Física and Revista Mexicana de Física E.</p>Sociedad Mexicana de Físicaen-USSuplemento de la Revista Mexicana de Física2683-2585<p>Authors retain copyright and grant the <strong><em>Suplemento de la Revista Mexicana de Física</em></strong> right of first publication with the work simultaneously licensed under a CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</p>Preface
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7345
<p>Preface.</p> <p>Proceedings of the XVIII Mexican Workshop on Particles and Fields 2022 and the XXXVI Annual Meeting of the Division of Particles and Fields 2022</p>Olga Guadalupe Félix BeltránEleazar Cuautle FloresMario Rodríguez Cahuantzi
Copyright (c) 2023 Olga Guadalupe Félix Beltrán, Eleazar Cuautle Flores, Mario Rodríguez Cahuantzi
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2023-10-312023-10-3142iivParticle radiation produced by accelerated systems and their analogy with damped oscillators
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7053
<p>The Unruh effect predicts how uniformly accelerated observers will perceive a change in the vacuum state. This shows that the concept of particle number depends on the acceleration of the reference frame. Although this is a result of quantum field theory, its experimental verification is still questioned, mainly due to the high accelerations required. In this work we study a quantum oscillator with only one complex coordinate and a damping term acting as perturbation, which has all the characteristics of the Unruh effect in second quantization for an accelerated observer. The Bogoliubov transformation connecting the two different vacuum states is obtained. This leads to an explicit formula for the particle occupation number as a function of energy and acceleration. Furthermore, it is shown that our analogue system contains an effective temperature that depends on the observer's sudden acceleration, seen as a friction force. The purpose of this work is to demonstrate that quanta production (particles or energy packets) is inevitable under the premises of quantum field theory.</p>Miguel Angel Estévez JuárezEmerson Sadurní
Copyright (c) 2023 Miguel Angel Estévez Juárez, Emerson Sadurní
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2023-09-182023-09-1842021101 1–4021101 1–410.31349/SuplRevMexFis.4.021101QCD phase diagram in the presence of electric and magnetic fields
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7027
<p>In this contribution, We revisit the effect of electric eE and magnetic field eB and on the critical temperature T χ,C c of the chiral symmetry breaking/restoration and confinement/deconfinement phase transition in the QCD Phase diagram. In this context, we use the symmetrypreserving vector-vector contact interaction model of quarks, in the Schwinger-Dyson equations framework and in the proper time regularization scheme. We also describe the phenomenon of inverse electric catalysis in the pure electric case, magnetic catalysis (and inverse magnetic catalysis) in the pure magnetic case and inverse electromagnetic catalysis in the presence of both electric and magnetic background fields.</p>Aftab Ahmad
Copyright (c) 2023 Aftab Ahmad
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-182023-09-1842021102 1–5021102 1–510.31349/SuplRevMexFis.4.021102Geometrical causality: casting Feynman integrals into quantum algorithms
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7105
<p>The calculation of higher-order corrections in Quantum Field Theories is a challenging task. In particular, dealing with multiloop and multileg Feynman amplitudes leads to severe bottlenecks and a very fast scaling of the computational resources required to perform the calculation. With the purpose of overcoming these limitations, we discuss efficient strategies based on the Loop-Tree Duality, its manifestly causal representation and the underlying geometrical interpretation. In concrete, we exploit the geometrical causal selection rules to define a Hamiltonian whose ground-state is directly related to the terms contributing to the causal representation. In this way, the problem can be translated into a minimization one and implemented in a quantum computer to search for a potential speed-up.</p>German Fabricio Roberto Sborlini
Copyright (c) 2023 German Fabricio Roberto Sborlini
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2023-09-182023-09-1842021103 1710.31349/SuplRevMexFis.4.021103Radiative corrections and new physics tests in semileptonic tau decays
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7094
<p><span dir="ltr" style="left: 99.7412px; top: 211.845px; font-size: 13.8012px; font-family: sans-serif; transform: scaleX(0.79163);" role="presentation">I review recent advances in the computation of radiative corrections in one- and two-meson tau decays and sketch their main applications in </span><span dir="ltr" style="left: 99.7412px; top: 230.246px; font-size: 13.8012px; font-family: sans-serif; transform: scaleX(0.800363);" role="presentation">new physics tests: of lepton universality and CKM unitarity, as well as searching for non-standard interactions.</span></p>Pablo Roig Garcés
Copyright (c) 2023 Pablo Roig Garcés
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2023-09-182023-09-1842021104 1810.31349/SuplRevMexFis.4.021104Michel parameters for elucidating the neutrinos nature and searching for new physics
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7090
<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>We use the most general four-lepton effective interaction Hamiltonian to investigate the impact of massive Dirac and Majorana neutrinos on the leptonic decays of muons and taus. Our analysis encompasses the specific energy and angular distribution of the resulting charged lepton, accounting for both the initial and final polarizations of the charged leptons. Additionally, we identify the emergence of novel generalized Michel parameters and concentrate on the influence of the heavy neutrino masses, which can make significant contributions in cases where new sterile neutrinos exhibit non-negligible mixing. Our analysis reveals that the most promising scenario occurs in the case of τ decays, featuring one heavy neutrino with a mass approximately ranging from 10^2 to 10^3 MeV. In this setting, the discrepancy between the Dirac and Majorana cases could reach an order of magnitude of 10^−4, which is significant enough to be detected in present and future experiments.</p> </div> </div> </div>Juan Marquez
Copyright (c) 2023 Juan Marquez
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2023-09-182023-09-1842021105 1610.31349/SuplRevMexFis.4.021105Latest results of the ALICE Collaboration and plans for ALICE 3
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7191
<p>The ALICE experiment is devoted to the study of the quark-gluon plasma (QGP) created in heavy-ion collisions at the CERN LHC. The experimental setup allows for the study of many different observables that contributed to the characterization of the properties of the QGP. The ALICE experiment went through a major upgrade during LS2 to profit from the increased LHC luminosity and to improve the tracking resolution. An additional upgrade is planned for LS3. A new experiment, ALICE 3, was proposed as next major upgrade in LS4. In this contribution, a selection of recent physics results was presented together with a glimpse of the next upgrades during LS3 and LS4, with the main focus on ALICE 3 and its physics program</p>A. Marin
Copyright (c) 2023 A. Marin
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2023-09-182023-09-1842021106 11010.31349/SuplRevMexFis.4.021106A mesurement of the mass of the τ lepton using new methods to study semi-invisible decays
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7082
<p>Measuring the mass of particles whose decay products cannot be detected poses a significant challenge due to the complexity of reconstructing these decays and measuring various parameters. However, studying processes involving undetectable particles is crucial as it enables us to delve deeper into familiar decays involving energy loss, such as Standard Model processes involving neutrinos. Additionally, it provides an opportunity to test models associated with physics beyond the Standard Model that can be generated in leptonic colliders. In this study, the mass of the tau lepton was determined by comparing three different methods for decays with semi-invisible final states. Specifically, the measurement focused on the decay τ − → π −ντ (signal). Among the three methods employed, the most accurate result was obtained using the Mmin method, yielding a tau lepton mass value of Mτ = 1777.06 ± 0.44 MeV. The measurement utilized official Monte Carlo data provided by the Belle II collaboration, specifically from the MC13a campaign conducted until 2020, with an integrated luminosity of 100fb<sup>−1</sup> .</p>Johan Andrés Colorado CaicedoEduard De La Cruz Burelo
Copyright (c) 2023 Johan Andrés Colorado Caicedo, Eduard De La Cruz Burelo
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2023-09-182023-09-1842021107 1810.31349/SuplRevMexFis.4.021107Top quark and vector meson production in heavy ion collisions at CMS
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7118
<p><span dir="ltr" role="presentation">Heavy ion collisions are rich and complex systems that involve different aspects of QCD and electromagnetic phenomena. From head-on </span><span dir="ltr" role="presentation">collisions to the case in which the nuclei miss each other, many of QCD and photo-induced probes are being actively investigated.</span> <span dir="ltr" role="presentation">In </span><span dir="ltr" role="presentation">this contribution we briefly discuss both of these different topics and some of the CMS results on top quark production and vector meson </span><span dir="ltr" role="presentation">photo-production, as well as the physics motivation to study these processes are presented.</span></p>Luis Fernando Alcerro Alcerro
Copyright (c) 2023 Luis Fernando Alcerro Alcerro
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2023-09-182023-09-1842021108 1410.31349/SuplRevMexFis.4.021108Core-corona approach to describe hyperon global polarization in semi-central relativistic heavy-ion collisions
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7014
<p>We report on the core-corona model developed to describe the main features of hyperon global polarization in semicentral relativistic heavy-ion collisions as a function of the collision energy. We first neglect the contribution to polarization from hyperons produced in the corona. In this scenario, the global polarization turns out to be described by a delicate balance between the vorticity-to-spin transferring reactions in the core and the predominance of corona over core matter at low energies. We show how this last feature provides a key ingredient missing in our original model that helps to better describe the excitation function for Λ and Λ global polarization. To improve the description, we then introduce the contribution to the global polarization coming from the transverse polarization of Λs produced in the corona, which is hereby assumed to be similar to the well-known polarization produced in p + p reactions. The results show a small positive contribution to the global polarization, however they are not yet conclusive due to the small size of the MC sample used in the analysis.</p>Alejandro AyalaIsabel DomínguezIvonne Alicia Maldonado CervantesMaría-Elena Tejeda-Yeomans
Copyright (c) 2023 Alejandro Ayala, Isabel Domínguez, Ivonne Alicia Maldonado Cervantes, María-Elena Tejeda-Yeomans
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2023-09-302023-09-3042021109 1510.31349/SuplRevMexFis.4.021109Entangelement entropy in high energy collisions of electrons and protons
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7128
<p>We investigate the proposal by Kharzeev and Levin of a maximally entangled proton wave function in Deep Inelastic Scattering of electrons and proton in the region of low Bjorken x. Using their proposed relation between parton number and entanglement entropy, we determine the latter using both conventional parton distribution functions and parton distribution functions obtained from an unintegrated gluon distribution subject to next-to-leading order Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution as well as from a dipole cross-section, subject to running coupling Balitsky-Kovchegov (rcBK) evolution. We compare our results to hadronic entropy obtained from final state hadron multiplicity.</p>Martin Hentschinski
Copyright (c) 2023 Martin Hentschinski
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2023-09-182023-09-1842021110 1510.31349/SuplRevMexFis.4.021110Study of cLFV with ℓiℓjγγ effective vertex
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7124
<p>In this work we analyze cLFV processes using a low-energy EFT that induces the effective interaction between two charged leptons of different flavor and two photons. We compute ℓ<sub>i</sub> → ℓ<sub>j</sub>γ, ℓ<sub>i</sub> → ℓ<sub>j</sub>γγ decays and ℓ<sub>i</sub> → ℓ<sub>j</sub> conversion in nuclei. We derived indirect upper limits on the double photon decays, which turned out to be below current experimental bounds. Our prediction for ℓ → τ conversion in nuclei is below the expected sensitivity of the NA64 experiment</p>Fabiola Fortuna
Copyright (c) 2023 Fabiola Fortuna
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2023-09-182023-09-1842021111 1910.31349/SuplRevMexFis.4.021111Speed of sound of a non-equilibrium medium formed at LHC energies
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7112
<p><span dir="ltr" role="presentation">We estimate the squared speed of sound for the hot and dense QCD states formed in ion collisions at very high energies by exploring </span><span dir="ltr" role="presentation">the implications of small-bounded and geometry effects in the String Percolation Model. The squared sound velocity shows signals of a </span><span dir="ltr" role="presentation">local minimum (knee point) below the critical temperature consistent with the softest point in the equation of state and the onset of quark </span><span dir="ltr" role="presentation">deconfinement that characterizes the quark-gluon plasma phase transition.</span></p>Jesús Ricardo Alvarado GarcíaIrais BautistaArturo Fernández Téllez
Copyright (c) 2023 Jesús Ricardo Alvarado García, Irais Bautista, Arturo Fernández Téllez
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2023-09-182023-09-1842021112 1510.31349/SuplRevMexFis.4.021112Electromagnetic form factors in a contact interaction: scalar and pseudoscalar mesons
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7159
<p>The determination of fundamental properties of hadrons is important to clearly understand the experimental measurements such as the anomalous magnetic moment of the muon. However, since a first principle approach is hard to find, several groups among the world are approaching phenomenologically to such description of hadrons. In this poster, we present a comprehensive survey of electromagnetic form factors of all light, heavy and heavy-light ground-state pseudoscalar and scalar mesons. Specifically, in this work we are interested on the determination of Elastic Meson Form Factors (EFF) for Scalar (S) and Pseudoscalar (PS) mesons. However, the calculation of all EFF requires the computation of the quark propagator, the Bethe-Salpeter (BS) equation and the Bethe-Salpeter Amplitudes (BSA) of mesons, their masses as well as the knowledge of the quark-photon interaction at different probing momenta.</p>Roger Hernández PintoL. X. Gutiérrez-GuerreroM. A. Bedolla HernándezI. M. Higuera-Angulo
Copyright (c) 2023 Roger Hernández Pinto, L. X. Gutiérrez-Guerrero, M. A. Bedolla Hernández, I. M. Higuera-Angulo
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2023-09-182023-09-1842021113 1410.31349/SuplRevMexFis.4.021113Electromagnetic time-like form factors
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7111
<p>We present the calculation of charged pion and kaon electromagnetic form factors in the time-like regime using Schwinger-Dyson equations and the Poincare covariant Bethe-Salpeter equations within an SU(2) isospin symmetric limit. To accurately represent the behavior of a time-like photon, we have incorporated non-valence contributions into the system of equations, enabling the decays ρ → ππ and φ → KK. The inclusion of these decay mechanisms is essential for capturing the expected behavior of the electromagnetic pion and kaon form factors. Our results for the form factors reasonably reproduce the experimental data for a time-like photon.</p>Angel MiramontesAdnan Bashir
Copyright (c) 2023 Angel Miramontes, Adnan Bashir
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2023-09-182023-09-1842021114 1610.31349/SuplRevMexFis.4.021114Electromagnetic corrections in hadronic tau decays
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7116
<p>We revisit the isospin-breaking and electromagnetic corrections of some hadronic tau decays, which can also be employed to extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element V<sub>us</sub>. We extend former analyses by Antonelli et al. working with ChPT with resonances. We find that going beyond the Low approximation, these corrections play an important role between the π<sup>− </sup>K<sup>0</sup> and K<sup>− </sup>π<sup>0</sup> modes. The K<sup>− </sup>K<sup>0</sup> channel is also discussed.</p>Jesús Alejandro Miranda Hernández
Copyright (c) 2023 Jesús Alejandro Miranda Hernández
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2023-09-182023-09-1842021115 1710.31349/SuplRevMexFis.4.021115Extraction of multiparton interactions from ALICE pp collisions data using machine learning
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7030
<p><span dir="ltr" style="left: 133.763px; top: 395.543px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.802988);" role="presentation">Over the last years, Machine Learning (ML) methods have been successfully applied to a wealth of problems in high-energy physics. In this </span><span dir="ltr" style="left: 133.763px; top: 420.223px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.810231);" role="presentation">work, we discuss the extraction of the average number of Multiparton Interactions (</span><span dir="ltr" style="left: 763.871px; top: 420.223px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">⟨</span><span dir="ltr" style="left: 771.27px; top: 420.223px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">N</span><span dir="ltr" style="left: 786.477px; top: 427.009px; font-size: 12.3393px; font-family: sans-serif; transform: scaleX(1.0746);" role="presentation">mpi</span><span dir="ltr" style="left: 812.526px; top: 420.223px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">⟩</span><span dir="ltr" style="left: 819.924px; top: 420.223px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.825);" role="presentation">) from minimum-bias pp data at LHC energies </span><span dir="ltr" style="left: 133.763px; top: 444.901px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.808206);" role="presentation">using a regression based on Boosted Decision Trees (BDT). Using the available ALICE data on transverse momentum spectra as a function </span><span dir="ltr" style="left: 133.763px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.829181);" role="presentation">of multiplicity, we report that for minimum-bias pp collisions at</span> <span dir="ltr" style="left: 624.629px; top: 456.242px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">√</span><span dir="ltr" style="left: 640.481px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">s</span> <span dir="ltr" style="left: 657.119px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">=</span> <span dir="ltr" style="left: 677.85px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.823332);" role="presentation">7 TeV the average</span> <span dir="ltr" style="left: 821.957px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">N</span><span dir="ltr" style="left: 837.165px; top: 476.365px; font-size: 12.3393px; font-family: sans-serif; transform: scaleX(1.0746);" role="presentation">mpi</span> <span dir="ltr" style="left: 869.15px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.818476);" role="presentation">is 3.98</span> <span dir="ltr" style="left: 925.758px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">±</span> <span dir="ltr" style="left: 946.489px; top: 469.579px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.812831);" role="presentation">1.01, which complements our </span><span dir="ltr" style="left: 133.763px; top: 494.257px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.834334);" role="presentation">previous results for pp collisions at</span> <span dir="ltr" style="left: 409.603px; top: 480.92px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">√</span><span dir="ltr" style="left: 425.456px; top: 494.257px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">s</span> <span dir="ltr" style="left: 443.425px; top: 494.257px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">=</span> <span dir="ltr" style="left: 464.859px; top: 494.257px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.821162);" role="presentation">5.02 and 13 TeV. The comparisons indicated a modest center-of-mass energy dependence of </span><span dir="ltr" style="left: 133.763px; top: 518.935px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">⟨</span><span dir="ltr" style="left: 141.16px; top: 518.935px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">N</span><span dir="ltr" style="left: 156.367px; top: 525.721px; font-size: 12.3393px; font-family: sans-serif; transform: scaleX(1.0746);" role="presentation">mpi</span><span dir="ltr" style="left: 182.416px; top: 518.935px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">⟩</span><span dir="ltr" style="left: 189.814px; top: 518.935px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.804954);" role="presentation">. The study is further extended extracting the multiplicity dependence of</span> <span dir="ltr" style="left: 739.625px; top: 518.935px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">N</span><span dir="ltr" style="left: 754.832px; top: 525.721px; font-size: 12.3393px; font-family: sans-serif; transform: scaleX(1.0746);" role="presentation">mpi</span> <span dir="ltr" style="left: 786.239px; top: 518.935px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.798688);" role="presentation">for the three center-of-mass energies. These results </span><span dir="ltr" style="left: 133.763px; top: 543.613px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.827048);" role="presentation">are qualitatively consistent with the existing ALICE measurements sensitives to Multiparton Interactions (MPI). Through the ML method </span><span dir="ltr" style="left: 133.763px; top: 568.291px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.839479);" role="presentation">applied to pp collisions at</span> <span dir="ltr" style="left: 339.55px; top: 554.956px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">√</span><span dir="ltr" style="left: 355.402px; top: 568.293px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">s</span> <span dir="ltr" style="left: 371.078px; top: 568.293px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.839363);" role="presentation">= 13 TeV, we also show that computing the multiplicity in the forward region the extraction of</span> <span dir="ltr" style="left: 1109.84px; top: 568.293px; font-size: 18.5089px; font-family: sans-serif;" role="presentation">N</span><span dir="ltr" style="left: 1125.05px; top: 575.08px; font-size: 12.3393px; font-family: sans-serif; transform: scaleX(1.0746);" role="presentation">mpi</span> <span dir="ltr" style="left: 1157.91px; top: 568.293px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.83415);" role="presentation">is </span><span dir="ltr" style="left: 133.763px; top: 592.972px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.807818);" role="presentation">improved. This result opens the possibility to extract the number of MPI event-by-event, and in this way study the particle production as a </span><span dir="ltr" style="left: 133.763px; top: 617.65px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.810323);" role="presentation">function of MPI. Our results provide additional evidence of the presence of MPI in hadronic interactions and can help to the understanding </span><span dir="ltr" style="left: 133.763px; top: 642.328px; font-size: 18.5089px; font-family: sans-serif; transform: scaleX(0.802066);" role="presentation">of the heavy-ion-like behaviour observed in pp collisions data</span>.</p>Erik Alfredo Zepeda GarcíaA. Ortiz
Copyright (c) 2023 Erik Alfredo Zepeda García, A. Ortiz
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2023-09-182023-09-1842021116 1410.31349/SuplRevMexFis.4.021116DM-SM interactions mediated by spin-one particles: EFT study
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7145
<p>Standard model-dark matter particles, mediated by spin one fields, are analyzed within the effective field theory framework. We [1, 2] consider dark particles masses from few MeV to 6.4 TeV. We restrict the EFT using bounds from relic density, Z invisible decay width, direct and indirect detection limits and collider constraints. Solutions below mZ are found for two operators. Others, around the electroweak scale or slightly above, are also compatible with all present limits.</p>Fabiola Fortuna
Copyright (c) 2023 Fabiola Fortuna
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-182023-09-1842021117 1510.31349/SuplRevMexFis.4.021117Multiplicity of charged and identified particles within jets
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7155
<p>Jets are commonly used to study Quantum Chromodynamics and search for physics beyond the Standard model. Recent experimental results are analyzed to study hard and soft hadron production mechanisms within and out of the jets. The result of this work is the study of hadron production within and out of the jets produced in proton-proton collisions generated using Pythia 8.3 event generator. We report color reconnection effects on jet multiplicity, multiplicity for identified particles within the jets and transverse momenta distributions at 7 and 13 TeV.</p>Eleazar Cuautle FloresSaksevul Arias Santiz
Copyright (c) 2023 Eleazar Cuautle Flores, Saksevul Arias Santiz
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-182023-09-1842021118 1510.31349/SuplRevMexFis.4.021118Physics with intact protons at the LHC: from the odderon discovery to the sensitivity to beyond standard model physics
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7107
<p class="p1">We describe the discovery of the colorless C-odd gluonic compound, the odderon, by the D0 and TOTEM Collaborations by comparing elastic differential cross sections measured in pp and pp¯ interactions at high energies. We also discuss the reach on quartic anomalous couplings and the sensitivity to axion like particle production by using the LHC as a γγ collider and detecting the intact protons at high luminosity.</p>Christophe Royon
Copyright (c) 2023 Christophe Royon
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-182023-09-1842021119 1710.31349/SuplRevMexFis.4.021119Sterile neutrinos in a left-right mirror model
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7120
<p>In this work we investigate the possibility that one neutrino mirror plays the role of a sterile neutrinos with mass on the scale of a few eV ′ s, that is, mˆ <sub>1</sub> ∼ O(1 eV ). We consider the extension of the Standard Model with gauge symmetry SU(2)<sub>L</sub> ⊗ SU(2)<sub>R</sub> ⊗ U(1)<sub>Y</sub> ′ and additional exotic fermions known as mirror fermions. A double application of the seesaw type I approximation to the most general Majorana-type neutrino mass matrix and diagonalization is performed to study neutrino masses and mixing.</p>Ricardo Gaitán LozanoAlbino Hernández GaleanaJosé H. Montes de OcaJose Manuel Rivera Rebolledo
Copyright (c) 2023 Ricardo Gaitán Lozano, Albino Hernández Galeana, José H. Montes de Oca, Jose Manuel Rivera Rebolledo
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2023-09-182023-09-1842021120 1310.31349/SuplRevMexFis.4.021120Exclusive Photo-production of J/Ψ and Ψ(2s) as a tool to explore the transition to high and saturated gluon densities at the LHC.
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7151
<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>We study the energy dependence of the cross-section for exclusive photo-production of vector mesons J/Ψ and Ψ(2s) and search for signs for the onset of non-linear QCD dynamics in this observable. Our study is based on two dipole models: the Golec-Biernat, Wuesthoff Model (GBW) and the Bartels, Golec-Biernat, Kowal- ski Model (BGK). We find that differences between linear and non-linear implementations of these models are relatively small in the kinematic region probed by both HERA and LHC experiments if the energy dependence of the photo-production cross-section is being considered. We however find that the ratio of both cross-sections grows with energy in the presence of non-linear effects, while it remains approximately constant in the linearized case. The ratio of photo-production cross-sections might therefore provide a suitable tool to characterize the size of non-linear QCD effects at current collider energies.</p> </div> </div> </div>Marco Antonio Alcazar PeredoMartin Hentschinski
Copyright (c) 2023 Marco Antonio Alcazar Peredo, Martin Hentschinski
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2023-09-182023-09-1842021121 1410.31349/SuplRevMexFis.4.021121The top quark chromomagnetic dipole moment in the SM
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7123
<p>We present our results on the top quark chromomagnetic dipole moment, which is based on the 5-dimension effective Lagrangian operator that characterizes the chromodipolar vertex functions gtt and ggtt. The chromomagnetic dipole mu_t is derived via quantum fluctuation at the 1-loop level. We evaluate µˆt(s) as a function of the energy scale s=+-E<sup>2</sup>, for E=[10,1000] GeV. In particular we focus on the conventional high-energy scale E=mZ, analogously as with alpha<sub>s</sub>(mZ<sup>2</sup>) and s<sub>W</sub>(mZ<sup>2</sup>). The spacelike evaluation matches quite well with the experimental central value, while the timelike case deviates from it.</p>Javier Montaño-DomínguezFernando I. Ramírez-ZavaletaEduardo S. TututiEverardo Urquiza-Trejo
Copyright (c) 2023 Javier Montaño-Domínguez, Fernando I. Ramírez-Zavaleta, Eduardo S. Tututi, Everardo Urquiza-Trejo
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-182023-09-1842021122 1510.31349/SuplRevMexFis.4.021122Recent developments within the cosmic ray extremely distributed observatory
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7160
<p>This contribution presents the recent research developments within the Cosmic Ray Extremely Distributed Observatory in the search for resolution of various scientific puzzles, ranging from fundamental physical questions to applications like the determination of earthquake precursors. The state-of-the art theoretical, numerical and computational aspects of these phenomena are addressed, as well as recent experimental developments for detection.</p>David Alvarez CastilloO. SushchovM. BielewiczT. WibigC. OanceaC. GranjaN. Zabari
Copyright (c) 2023 David Alvarez Castillo, O. Sushchov, M. Bielewicz, T. Wibig, C. Oancea, C. Granja, N. Zabari
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-272023-09-2742021123 1810.31349/SuplRevMexFis.4.021123Evolution of pion mass with temperature
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7029
<p>We study the evolution of light quarks with isospin symmetry and the pion masses in the presence of a thermal bath and study their temperature dependence. In addition, we analyze the inclusion of a coupling with temperature dependence. We attempt to study the dissolution of bound-states at temperatures higher than the critical temperature, but we found that the model shows that the bound-state's mass increases. We base our study on a momentum-independent symmetry-preserving truncation scheme contact interaction in the Schwinger-Dyson equations framework.</p>Jose Luis Flores-PonMarco Antonio BedollaPeter SloaneAlfredo Raya
Copyright (c) 2023 Jose Luis Flores-Pon, Marco Antonio Bedolla, Peter Sloane, Alfredo Raya
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-09-272023-09-2742021124 1710.31349/SuplRevMexFis.4.021124Minimal center-of-mass energy required for QGP formation in pp and AA collisions
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7113
<p>We discuss the conditions for QGP formation under the Color String Percolation Model. Since the observables in the percolation theory are sensitive to the system size, we expect the finite size effects take a relevant contribution to the estimation of the color string observables, such as the transition temperature or the center of mass energy needed for the QGP formation. <br>We observe that pp collisions (small systems) require around 20 times bigger center of mass energy than heavy ion collisions. Our results are consistent with the experiments claiming that the QGP has been observed.</p>Diana Rosales HerreraArturo Fernández TéllezJhony Ramírez
Copyright (c) 2023 Diana Rosales Herrera, Arturo Fernández Téllez, Jhony Ramírez
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2023-11-062023-11-0642021125 1510.31349/SuplRevMexFis.4.021125Constraining BSM discrete flavor symmetries with heavy scalar searches at colliders
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7127
<p>Discrete Flavor Symmetries are often employed in BSM constructions to successfully recreate fermion masses and mixing patterns through several known mechanisms. Obvious constraints on these types of scenarios are the non-observation of Flavour Changing Neutral Currents which set stringent limits. In this talk I will discuss the strategy of using the scalar sector phenomenology predicted by such BSM models, and its correlation with the dark matter sector, to further strengthen the constraints by exploiting the large data available from heavy scalar searches in colliders including recent likelihood profiles provided by ATLAS and CMS.</p>Antonio Enrique Cárcamo HernándezMaría Catalina Espinoza HernándezJuan Carlos Gómez-IzquierdoJuan Marchant GonzálezMyriam Mondragón
Copyright (c) 2023 Antonio Enrique Cárcamo Hernández, María Catalina Espinoza Hernández, Juan Carlos Gómez-Izquierdo, Juan Marchant González, Myriam Mondragón
https://creativecommons.org/licenses/by-nc-nd/4.0
2023-11-062023-11-0642021126 1810.31349/SuplRevMexFis.4.021126Update on the parameter space for the dark matter with extended scalar sector
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7129
<p>We discuss extensions to the Standard Model that increase only the scalar sector, specifically with a singlet and doublet fields. We consider the current values and limits for the Dark Matter (DM) observables in order to constraint the model parameters. We also take into account the latest data related to the physics of the Higgs. We find an update allowed regions for the masses of the DM particle for each extended model in this work.</p>Aldair Hernández CruzJose Halim Montes de Oca YemhaRicardo Gaitán Lozano
Copyright (c) 2023 Aldair Hernández Cruz, Jose Halim Montes de Oca Yemha, Ricardo Gaitán Lozano
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2023-11-062023-11-0642021127 1810.31349/SuplRevMexFis.4.021127An electron-muon collider: what can be probed with it?
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7119
<p>Collisions of electrons against muons provide a very clean environment for many beyond SM signals. We consider the case of two-to-two flavor changing processes that are absent in the SM. The sensitivity of the e-muon collider to the four-fermion dimension six operators is about the same order of magnitude as the one based on low energy measurements.</p>Antonio Osvaldo BouzasFrancisco Larios
Copyright (c) 2023 Antonio Osvaldo Bouzas, Francisco Larios
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2023-11-062023-11-0642021128 1510.31349/SuplRevMexFis.4.021128Dark matter from an effective couplings approach
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7115
<p>In this work we briefly review dark matter evidence, in the Weakly Interacting Massive Particles (WIMP) paradigm we study the cases of scalar and fermion dark matter candidates. Our study introduces effective couplings between dark matter and Standard Model matter, it is intended as an exercise for academic purposes setting up the required tools for a further analysis. Under the last assumption, we calculate the relic density in order to constrain the model parameter space.</p>Inti Ernesto Chávez MénezJosé Halim Montes de Oca YemhaEstela Alejandra Garcés GarcíaRicardo Gaitán Lozano
Copyright (c) 2023 Inti Ernesto Chávez Ménez, J. H. Montes de Oca Y., Estela A. Garcés, R. Gaitán
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2023-11-092023-11-0942021129 1510.31349/SuplRevMexFis.4.021129New limits on lepton flavour violating processes in the Littlest Higgs model with T-parity
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7047
<p>By understanding neutrino masses via an inverse seesaw mechanism, the Littlest Higgs model with T parity is enlarged. Promising predictions for lepton flavor violating processes within this setting (see refs.~\cite{IvanPachecoZ,Ivan2}) are reviewed.</p>Iván Pacheco
Copyright (c) 2023 Iván Pacheco
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2023-11-092023-11-0942021130 11210.31349/SuplRevMexFis.4.021130Ultraperipheral heavy-ion collisions in Run3 - verification of what we know or new physics?
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7158
<p>The theoretical predictions presented in this work are integral to the ongoing and planned experiments at RHIC and CERN-LHC laboratory. The innovation of the research lies in the possibility of making distributions of many measurable kinematic variables, which are often key to better understanding the reaction mechanism, rather than being limited to presenting only the value of the total cross section. The presented aspect of the research can be used to plan future experiments as well as to interpret already existing experimental results. The correctness of the results is strongly influenced by the type of nuclear form factor used.</p>Mariola Klusek Gawenda
Copyright (c) 2023 Mariola Klusek Gawenda
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2024-01-192024-01-1942021131 11110.31349/SuplRevMexFis.4.021131Top quark anomalous couplings from top-pair tagged photoproduction at pe− colliders
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7028
<p>We summarize the quantitative results of our analysis [1] of top-pair photoproduction in semileptonic mode in pe collisions at the LHeC and FCC-he. We define three photoproduction regions, based on the rapidity acceptance range of the electron tagger, that provide different degrees of sensitivity to top-quark effective couplings. We focus on the ttγ dipole couplings and the left-handed vector tbW coupling, for which we determine limits at both energies in the different photoproduction regions. Furthermore, we find that the LHeC and FCC-he will yield tight direct bounds on top dipole moments, greatly improving on current direct limits from hadron colliders, and direct limits on the tbW coupling as restrictive as those expected from the HL-LHC. We also consider indirect limits from b → sγ branching ratio and CP asymmetry, that are well known to be very sensitive probes of top electromagnetic dipole moments.</p>Antonio BouzasF. Larios
Copyright (c) 2023 Antonio Bouzas, F. Larios
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2024-01-192024-01-1942021132 1710.31349/SuplRevMexFis.4.021132Implementation and improvement of image reconstruction techniques using muons from cosmic rays
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7117
<p>In this article, two image reconstruction techniques for radiography and tomography using cosmic ray muons are presented. The simulation is carried out using the Geant4 package, simulating a multiple coincidence system of four RPCs (Resistive Plate Chambers). The reconstruction techniques presented are based on particle trajectory reconstruction and localization of a single center of dispersion. Two functional cases are displayed for each technique.</p>Jalil Villalobos AlvaC. Uribe EstradaC. Arturo ÁngelesM. Ramirez García
Copyright (c) 2023 Jalil Villalobos Alva, C. Uribe Estrada, C. Arturo Ángeles, M. Ramirez García
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2024-01-262024-01-2642021133 1710.31349/SuplRevMexFis.4.021133Precision studies for the partonic kinematics calculation through Machine Learning
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7126
<p>High Energy collider experiments are moving to the highest precision frontier quickly. The predictions of observables are based on the factorization formula which helps to connect small to large distances. These predictions can be contrasted with experimental measurements and the success of this phenomenological approach is based on the correct description of nature. The application of the method to proton-proton colliders brings new challenges due to the proton structure and the detectors efficiency on reconstructing hadrons. Furthermore, since the non-perturbative distribution functions takes an important role to describe the experimental distributions, the presence of them makes the information of the partons diluted. At Leading Order (LO) in perturbative calculations, the momentum fractions involved in hard scattering processes are known exactly in terms of kinematical variables of initial and final states hadrons. However, at Next-to-Leading Order (NLO) and beyond, a closed analytical formula is not available. Furthermore, from the pure theoretical calculation, the exact definition of the momentum fraction is very challenging. In this work, we report a methodology based on Machine Learning techniques for the extraction of momentum fractions for $p+p\to\pi^++\gamma$ using a Monte Carlo simulation including quantum corrections up to Next-to-Leading Order in Quantum Chromodynamics and Leading Order in Quantum Electrodymics. Our findings point towards a methodology to find the fundamental properties of the internal structure of hadrons because the reconstructed momentum fractions deeply relate our perturbative models with experimental measurements.</p>David Francisco Rentería EstradaRoger J. Hernandez-PintoGerman F. R. SborliniPia Zurita
Copyright (c) 2023 David Francisco Rentería Estrada, Roger J. Hernandez-Pinto, German F. R. Sborlini, Pia Zurita
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2024-01-262024-01-2642021134 1610.31349/SuplRevMexFis.4.021134Overview of the CODEX-b experiment
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7152
<p>We present the motivation and use-case for the proposed CODEX-b detector, as well as its description. We also describe the design and status of a smaller demonstrator detector, CODEX-beta, as of the time of the conference associated with these proceedings.</p>Michael Wilkinson
Copyright (c) 2023 Michael Wilkinson
https://creativecommons.org/licenses/by-nc-nd/4.0
2024-03-192024-03-1942021135 1710.31349/SuplRevMexFis.4.021135Dark sector of a Higgs portal with Q4 symmetric matter
https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/7146
<p>We describe the phenomenology of the scalar and dark matter sectors of a BSM theory with Q4 symmetry among the SM fermions. The model features a Higgs portal to a dark sector comprised of heavy right handed neutrinos. We discuss relic abundance as well as direct detection constraints on the DM candidate.</p>Antonio Enrique Cárcamo HernándezMaría Catalina Espinoza HernándezJuan Carlos Gómez-IzquierdoMyriam Mondragón
Copyright (c) 2023 Antonio Enrique Cárcamo Hernández, María Catalina Espinoza Hernández, Juan Carlos Gómez-Izquierdo, Myriam Mondragón
https://creativecommons.org/licenses/by-nc-nd/4.0
2024-03-192024-03-1942021136 1610.31349/SuplRevMexFis.4.021136