Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

Inclusive production of J/ψ, ψ(2S), and Υ states in pNRQCD

Jun 5, 2023, 2:48 PM
DAD - Room 5H (Genova, Italy)

DAD - Room 5H

Genova, Italy

Contributed Hadron decays, production and interactions Hadron decays, production and interaction


Xiangpeng Wang (TUM)


Under some assumptions on the hierarchy of relevant energy scales, we com-
pute the nonrelativistic QCD (NRQCD) long-distance matrix elements (LDMEs) for inclu- sive production of J/ψ, ψ(2S), and Υ states based on the potential NRQCD (pNRQCD) effective field theory. Based on the pNRQCD formalism, we obtain expressions for the LDMEs in terms of the quarkonium wavefunctions at the origin and universal gluonic cor- relators, which do not depend on the heavy quark flavor or the radial excitation. This greatly reduces the number of nonperturbative unknowns and substantially enhances the predictive power of the nonrelativistic effective field theory formalism. We obtain improved determinations of the LDMEs for J/ψ, ψ(2S), and Υ states thanks to the universality of the gluonic correlators, and obtain phenomenological results for cross sections and polarizations at large transverse momentum that agree well with measurements at the LHC.

Primary author


Hee Sok Chung (Technical University of Munich) Nora Brambilla (TUM) Xiangpeng Wang (TUM)

Presentation materials