18-22 October 2021
Matsue, Shimane Prefecture, Japan
Asia/Tokyo timezone

Azimuthal asymmetry in $J/\psi$ electroproduction as a probe to linearly polarized gluon distribution at electon-ion collider

20 Oct 2021, 11:51
18m
Room 601 (Kunibiki Messe)

Room 601

Kunibiki Messe

Parallel Session Presentation Transverse momentum structure (TMD) Transverse Momentum Structure (TMD)

Speaker

Raj Kishore (IIT Bombay)

Description

We propose an estimate of cos(2$\phi$) azimuthal asymmetry in $J/\psi$ electroproduction, in an unpolarized electron-proton scattering process. We have used a non-relativistic QCD (NRQCD) framework for the $J/\psi$ production rate. Within the kinematical range of the proposed Electron-Ion Collider (EIC), this can investigate the linearly polarised gluon distribution in the unpolarized proton. We compute the azimuthal asymmetry in the kinematic region: $z < 1$, where the leading contribution comes from the photon-gluon fusion subprocess: $\gamma^*g\rightarrow Q\bar{Q}+g$. We use two alternative models for TMDs to give the numerical estimate of the asymmetry: (1) the Gaussian-type parameterization and (2) the McLerran-Venugopalan model at small-$x$.

Primary authors

Raj Kishore (IIT Bombay) Prof. Asmita Mukherjee (IIT Bombay) Dr Mariyah Siddiqah (IIT Bombay)

Presentation Materials