Unraveling Gluon TMDs in $J/ψ$ and Pion production at the EIC
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916352001835008 |
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| author | Banu, Khatiza Mukherjee, Asmita Pawar, Amol Rajesh, Sangem |
| author_facet | Banu, Khatiza Mukherjee, Asmita Pawar, Amol Rajesh, Sangem |
| contents | We investigate the azimuthal asymmetries such as $\cos2{ϕ_T}$ and Sivers symmetry for $J/ψ$ and $π^\pm$ production in electron-proton scattering, focusing on scenarios where the $J/ψ$ and the pion are produced in an almost back-to-back configuration. The electron is unpolarized, while the proton can be unpolarized or transversely polarized. For the $J/ψ$ formation, we use non-relativistic QCD (NRQCD), while $π^\pm$ is formed due to parton fragmentation. In this kinematics, we utilize the transverse momentum-dependent factorization framework to calculate the cross sections and asymmetries. We consider both quark and gluon-initiated processes and show that the gluon contribution dominates. We provide numerical estimates of the upper bounds on the azimuthal asymmetries, as well as employ a Gaussian parametrization for the gluon transverse momentum distributions (TMDs), within the kinematical region accessible by the upcoming Electron-Ion Collider (EIC). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_00271 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unraveling Gluon TMDs in $J/ψ$ and Pion production at the EIC Banu, Khatiza Mukherjee, Asmita Pawar, Amol Rajesh, Sangem High Energy Physics - Phenomenology We investigate the azimuthal asymmetries such as $\cos2{ϕ_T}$ and Sivers symmetry for $J/ψ$ and $π^\pm$ production in electron-proton scattering, focusing on scenarios where the $J/ψ$ and the pion are produced in an almost back-to-back configuration. The electron is unpolarized, while the proton can be unpolarized or transversely polarized. For the $J/ψ$ formation, we use non-relativistic QCD (NRQCD), while $π^\pm$ is formed due to parton fragmentation. In this kinematics, we utilize the transverse momentum-dependent factorization framework to calculate the cross sections and asymmetries. We consider both quark and gluon-initiated processes and show that the gluon contribution dominates. We provide numerical estimates of the upper bounds on the azimuthal asymmetries, as well as employ a Gaussian parametrization for the gluon transverse momentum distributions (TMDs), within the kinematical region accessible by the upcoming Electron-Ion Collider (EIC). |
| title | Unraveling Gluon TMDs in $J/ψ$ and Pion production at the EIC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.00271 |