https://doi.org/10.1140/epjc/s10052-024-12985-2
Regular Article - Theoretical Physics
Flavor asymmetry of light sea quarks in proton: a light-front spectator model
1
Department of Physics, Indian Institute of Technology Kanpur, 208016, Kanpur, India
2
Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
3
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
a
poonamch@iitk.ac.in
b
dipankar@iitk.ac.in
c
mondal@impcas.ac.cn
Received:
6
March
2024
Accepted:
3
June
2024
Published online:
21
June
2024
We formulate a light-front spectator model for the proton that incorporates the presence of light sea quarks. In this particular model, the sea quarks are seen as active partons, whereas the remaining components of the proton are treated as spectators. The proposed model relies on the formulation of the light-front wave function constructed by the soft wall AdS/QCD. The model wave functions are parameterized by fitting the unpolarized parton distribution functions of light sea quarks from the CTEQ18 global analysis. We then employ the light-front wave functions to obtain the sea quarks generalized parton distribution functions, transverse momentum dependent parton distributions, and their asymmetries, which are accessible in the upcoming Electron-Ion-Colliders. We investigate sea quarks’ spin and orbital angular momentum contributions to the proton spin.
© The Author(s) 2024
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