$\cos2\phi_t$ azimuthal asymmetry in back-to-back $J/\psi$-jet production in $e~p\rightarrow e~J/\psi~Jet~ X$ at the EIC

Amol Pawar; Asmita Mukherjee; Mariyah Siddiqah; Raj Kishore

$\cos2\phi_t$ azimuthal asymmetry in back-to-back $J/\psi$-jet production in $e~p\rightarrow e~J/\psi~Jet~ X$ at the EIC

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arxiv 2203.13516 v2 pith:CM4RWEOU submitted 2022-03-25 hep-ph nucl-th

Raj Kishore , Asmita Mukherjee , Amol Pawar , Mariyah Siddiqah This is my paper · ORCID

classification hep-phnucl-th

keywords asymmetryazimuthalback-to-backcolorcontributionscos2differentinvestigate

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abstract

In this article, we investigate the $\cos2\phi_t$ azimuthal asymmetry in $e ~p\rightarrow e ~J/\psi ~Jet~ X$, where the $J/\psi$-jet pair is almost back-to-back in the transverse plane, within the framework of the generalized parton model(GPM). We use non-relativistic QCD(NRQCD) to calculate the $J/\psi$ production amplitude and incorporate both color singlet(CS) and color octet(CO) contributions to the asymmetry. We estimate the asymmetry using different parameterizations of the gluon TMDs in the kinematics that can be accessed at the future electron-ion collider (EIC) and also investigate the impact of transverse momentum dependent (TMD) evolution on the asymmetry. We present the contributions coming from different states to the asymmetry in NRQCD.

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