Proton image and momentum distributions on the light-front

Authors

  • Emanuel Ydrefors IMPCAS
  • T. Frederico ITA

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.0308094

Keywords:

Light-front dynamics, relativistic three-body systems, proton structure

Abstract

The proton has been studied in a fully dynamical three-body model on the light-front. The model is based on the concept of a strongly interacting diquark, either bound or virtual, which is generated from a zero-range interaction between the two active quarks. The obtained results for the Dirac electromagnetic form factor and also the density in the Ioffe-time space are shown and discussed. Additionally, we present results for the parton distribution function of the proton.

References

S. J. Brodsky, H.-C. Pauli, and S. S. Pinsky, Quantum chromodynamics and other field theories on the light cone, Phys. Rep., 301 (1998) 299. https://doi.org/10.1016/S0370-1573(97)00089-6.

G. A. Miller and S. J. Brodsky, The frame-independent spatial coordinate z˜ : Implications for light-front wave functions, deep inelastic scattering, light-front holography, and lattice QCD calculations, Phys. Rev. C, 102 (2020) 022201. https://doi.org/10.1103/PhysRevC.102.022201.

J. Vary, H. Honkanen, J. Li, P. Maris, S. Brodsky, A. Harindranath, G. de Teramond, P. Sternberg, E. Ng, and C. Yang, Hamiltonian light-front field theory in a basis function approach, Phys. Rev. C, 81(2010) 035205. https://doi.org/10.1103/PhysRevC.81.035205.

C. Mondal, S. Xu, J. Lan, X. Zhao, Y. Li, D. Chakrabarti, and J. P. Vary (BLFQ Collaboration), Proton structure from a lightfront Hamiltonian, Phys. Rev. D, 102 (2020) 016008. https://doi.org/10.1103/PhysRevD.102.016008.

T. Frederico, Null-plane model of three bosons with zero-range interaction, Phys. Lett. B, 282 (1992) 409. https://doi.org/10.1016/0370-2693(92)90661-M.

J. Carbonell, and V. A. Karmanov, Three-boson relativistic bound states with zero-range two-body interaction, Phys. Rev. C, 67 (2003) 037001. https://doi.org/10.1103/PhysRevC.67.037001.

E. Ydrefors, J. H. Alvarenga Nogueira, V. Gigante, T. Frederico, and V. A. Karmanov, Three-body bound states with zero-range interaction in the Bethe-Salpeter approach, Phys. Lett. B, 770 (2017) 131. http://dx.doi.org/10.1016/j.physletb.2017.04.035.

E. Ydrefors, J. H. Alvarenga Nogueira, V. A. Karmanov, and T. Frederico, Solving the three-body bound-state BetheSalpeter equation in Minkowski space, Phys. Lett. B, 791 (2019) 276. https://doi.org/10.1016/j.physletb.2019.02.046.

E. Ydrefors, J. H. Alvarenga Nogueira, V. A. Karmanov, and T. Frederico, Three-boson bound states in Minkowski space with contact interactions, Phys. Rev. D, 101 (2020) 096018. https://doi.org/10.1103/PhysRevD.101.096018.

E. Ydrefors, and T. Frederico, Proton image and momentum distributions from light-front dynamics, Phys. Rev. D, 104 (2021) 114012. https://doi.org/10.1103/PhysRevD.104.114012.

T. Frederico, and G. Salme, Projecting the Bethe-Salpeter Equation onto the Light-Front and Back: A Short Review, Few-Body Syst., 49 (2011) 163. https://doi.org/10.1007/s00601-010-0163-z.

J. A. O. Marinho, and T. Frederico, Next-to-leading order lightfront three-body dynamics, Proc. Sci., LC2008 (2008) 036. https://doi.org/10.22323/1.061.0036.

Z. Ye, J. Arrington, R. J. Hill, and G. Lee, Proton and neutron electromagnetic form factors and uncertainties, Phys. Lett. B, 777, (2018) 8. https://doi.org/10.1016/j.physletb.2017.11.023.

W. Xiong et al, A small proton charge radius from an electronproton scattering experiment, Nature, 575 (2019) 147. https://doi.org/10.1038/s41586-019-1721-2.

W. de Paula, E. Ydrefors, J. H. Alvarenga Nogueira, T. Frederico, and G. Salme, Observing the Minkowskian dynamics of the pion on the null-plane, Phys. Rev. D, 103, (2021) 014002. https://doi.org/10.1103/PhysRevD.103.014002.

Downloads

Published

2022-06-30

How to Cite

1.
Ydrefors E, Frederico T. Proton image and momentum distributions on the light-front. Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 30 [cited 2024 Dec. 21];3(3):0308094 1-5. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6228