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Cos2φt azimuthal asymmetry in back-to-back J/ψ -jet production in ep →eJ/ψ jet X at the EIC
Journal
Physical Review D
ISSN
24700010
Date Issued
2022-08-01
Author(s)
Kishore, Raj
Mukherjee, Asmita
Pawar, Amol
Siddiqah, Mariyah
Abstract
In this article, we investigate the cos2φt azimuthal asymmetry in ep→eJ/ψ jet X, where the J/ψ-jet pair is almost back to back in the transverse plane, within the framework of the generalized parton model. We use nonrelativistic QCD (NRQCD) to calculate the J/ψ production amplitude and incorporate both color singlet and color octet contributions to the asymmetry. We estimate the asymmetry using different parametrizations of the gluon transverse-momentum-dependent parton distributions in the kinematics that can be accessed at the future electron-ion collider (EIC) and also investigate the impact of transverse-momentum-dependent evolution on the asymmetry. We present the contributions coming from different states to the asymmetry in NRQCD.
Volume
106
Publication link