Production mechanism of fully heavy tetraquarks in proton-proton collisions

Authors

  • Antoni Szczurek Institute of Nuclear Physics, Krakow
  • R. Maciula Institute of Nuclear Physics, Krakow
  • W. Schäfer Institute of Nuclear Physics, Krakow

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.0308093

Keywords:

Heavy tetraquark production mechanism; multiparton interactions

Abstract

We discuss the production mechanism of fully charm tetraquark, observed last year by the LHCb at M = 6.9 GeV in the J/ψJ/ψ channel. Both single parton scattering (SPS) and double parton scattering (DPS) mechanisms are considered. We calculate the distribution in the invariant mass of the four-quark system, M4c, for SPS and DPS production of ccc¯c¯ in the kt-factorization approach. We present transverse momentum distribution in pt,4c for ccc¯ c¯ system in a mass window around tetraquark mass. The calculation of the SPS g ∗ g ∗ → T4c(6900) fusion mechanism is performed in the kT -factorization approach assuming different spin scenarios (0 + and 0 −).

References

R. Aaij et al., (LHCb collaboration), Observation of structure in the J/ψ-pair mass spectrum, Sci. Bull. 2020 65, https://doi.org/10.1016/j.scib.2020.08.032. [arXiv:2006.16957 [hep-ex]].

V.R. Debastiani and F.S. Navarra, A non-relativistic model for the [cc][¯cc¯] tetraquark, Chin. Phys. C43 (2019) 013105.

M.A. Bedolla, J. Ferretti, C.D. Roberts and E. Santopinto, Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective, Eur. Phys. J. C 80 (2020) 1004, https://doi.org/10.1140/epjc/s10052-020-08579-3. [arXiv:1911.00960 [hep-ph]].

H.X. Chen, W. Chen, X. Liu and S.-L. Zhu, Strong decays of fully-charm tetraquarks into di-charmonia, Sci. Bull. 65, (2020) 1994, https://doi.org/10.1016/j.scib.2020.08.038. [arXiv:2006.16027 [hep-ph]].

Q. F. Lü, D. Y. Chen and Y. B. Dong, Masses of fully heavy tetraquarks QQQ¯Q¯ in an extended relativized quark model,” Eur. Phys. J. C 80 (2020) 871, https://doi.org/10.1140/epjc/s10052-020-08454-1. [arXiv:2006.14445 [hep-ph]].

M. Łuszczak, R. Maciuła and A. Szczurek, Production of two cc¯ pairs in double-parton scattering, Phys. Rev. D85 (2012) 094034.

W. Schäfer and A. Szczurek, Production of two cc¯ pairs in gluon-gluon scattering in high energy proton-proton scattering, Phys. Rev. D85 (2012) 094029.

R. Maciuła and A. Szczurek, Production of ccc¯ c¯ in doubleparton scattering within kt-factorization approach: mesonmeson correlations, Phys. Rev. D87 (2013) 074039.

A. van Hameren, R. Maciula and A. Szczurek, Single-parton scattering versus double-parton scattering in the production of two cc¯ pairs and charmed meson correlations at the LHC, Phys. Rev. D89 (2014) 094019.

A. van Hameren, R. Maciuła and A. Szczurek, Production of two charm quark-antiquark pairs in single-parton scattering within the kt-factorization approach, Phys. Lett. B748 (2015) 7737.

R. Aaij et al., (LHCb collaboration) Observation of J/ψ pair production in pp collisions at √ s = 7 TeV, Phys. Lett. B707 (2012) 52.

V. Khachatryan et al., (CMS collaboration) Measurement of prompt J/ψ pair production in pp collisions at √ s = 7 TeV, JHEP 1409 (2014) 094.

M. Aaboud et al., (ATLAS collaboration), Measurement of the prompt J/ψ pair production cross section in pp collisions at √ s = 8 TeV with the ATLAS detector, Eur. Phys.J. C77 (2017) 76; arXiv:1612.02950 [hep-ex].

S. P. Baranov, A. M. Snigirev, N. P. Zotov, A. Szczurek and W. Schäfer, Interparticle correlations in the production of J/ψ pairs in proton-proton collisions, Phys. Rev. D 87 (2013) 034035, https://doi.org/10.1103/PhysRevD.87.034035. [arXiv:1210.1806 [hep-ph]].

I. Babiarz, R. Pasechnik, W. Schäfer and A. Szczurek, Hadroproduction of ηc(1S, 2S) in the kT -factorization approach, JHEP 2002 (2020) 037.

I. Babiarz, R. Pasechnik, W. Schäfer and A. Szczurek, Hadroproduction of scalar P-wave quarkonia in the light-front kT -factorization approach, JHEP 06 (2020) 101.

R. Maciula, W. Schäfer and A. Szczurek, On the mechanism of T4c(6900) tetraquark production, Phys. Lett. B812 (2021) 136010.

Downloads

Published

2022-06-13

How to Cite

1.
Szczurek A, Maciula R, Schäfer W. Production mechanism of fully heavy tetraquarks in proton-proton collisions . Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 13 [cited 2024 Dec. 21];3(3):0308093 1-4. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6218

Issue

Vol. 3 No. 3 (2022): Suplemento de la Revista Mexicana de Física. 19th International conference on hadron spectroscopy and structure in memoriam Simon Eidelman

Section

QCD and hadron structure

License

Copyright (c) 2022 Antoni Szczurek, R. Maciula, W. Schäfer (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Authors retain copyright and grant the Suplemento de la Revista Mexicana de Física 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.