Linearly polarized gluons in charmonium and bottomonium production in color octet model

Abstract

We study the possibility to probe the unpolarized and linearly polarized transverse momentum- dependent gluon distributions in unpolarized pp collision in charmonium and bottomonium produc- tion, employing non-relativistic QCD (NRQCD) based color octet model within transverse momentum dependent (TMD) factorization framework. The transverse momentum (p T ) and rapidity distributions of J/ψ and Υ(1S) at LHCb, RHIC and AFTER energies are estimated. Significant modulations in transverse momentum spectrum of quarkonium in the low p T region is obtained when contributions of linearly polarized gluons inside an unpolarized proton are taken into account. The results of quarko- nium production in color octet model and color evaporation model are compared.

Replaced with the revised version, to appear in PRD

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Cited by in corpus (15)

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• Prospects for quarkonium studies at the high-luminosity LHC
• Quarkonium TMD fragmentation functions in NRQCD
• Azimuthal asymmetries in $J/\psi$-photon production at the EIC
• The suppressions of dijet azimuthal correlations in the future EIC
• $\cos 2{\varphi }_t$ azimuthal asymmetry in back-to-back $J/\psi$-jet production in $ep\to eJ/\psi JetX$ at the EIC
• Gluon TMD fragmentation function into quarkonium
• Polarized TMD fragmentation functions for $J/\psi$ production
• QCD predictions for the azimuthal asymmetry in charm leptoproduction for the COMPASS kinematics
• Polarized $J/\psi$ production in semi-inclusive DIS at large $Q^2$: Comparing quark fragmentation and photon-gluon fusion
• Azimuthal angular correlation of $J/\psi$ plus jet production at the electron-ion collider
• Probing the Sivers asymmetries through $J/\psi$ photoproduction in ${\mathrm{p}}^{\uparrow }\mathrm{p}$ collision with forward proton tagging