Speaker
Raj Kishore
(IIT Bombay)
Description
We present a recent calculation of $cos2\phi$ asymmetry in $J/\psi$ production, in an unpolarized electron-proton collision, using non-relativistic QCD (NRQCD) based color octet model. This can probe the linearly polarized gluon distribution in the unpolarized proton within the kinematical range of the planned Electron-Ion Collider (EIC). We calculate the asymmetry in the kinematical region $z<1$, where the next-to-leading order (NLO), in $\alpha_s$, subprocess $\gamma*+g\rightarrow J/\psi+g$ gives the leading contribution. We present numerical estimates of the asymmetry using two different models for TMDs: (1) the Gaussian-type parameterization and (2) the McLerran-Venugopalan model at small $x$.
Authors
Raj Kishore
(IIT Bombay)
Asmita Mukherjee
(IIT Bombay)
Mariyah Siddiqah
(Aligarh Muslim University)
