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
Room 601 (Kunibiki Messe)

Room 601

Kunibiki Messe

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


Raj Kishore (IIT Bombay)


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