Direct quarkonium-plus-gluon production in DIS in the Color Glass Condensate
Journal of High Energy Physics(2023)
摘要
We compute the differential cross-section for direct quarkonium production
accompanied by a gluon in high-energy deep inelastic scattering (DIS) at
small-x. We employ the Non-Relativistic QCD factorization framework, focusing
on the S-wave contribution to the formation of the quarkonium, and including
both color singlet and octet contributions. Our short distance coefficients for
the production of the heavy quark pair are obtained within the Color Glass
Condensate effective field theory. Our results pave the way towards the
next-to-leading order computation of direct quarkonium in DIS, as well as the
study of azimuthal correlations of direct quarkonium and jet.
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关键词
Deep Inelastic Scattering or Small-x Physics,Quarkonium
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