Work

Production of S-wave charmonia in the soft gluon resummation approach using the NRQCD

Year: 2025

Type: article

Abstract: In this paper, we study the S-wave charmonium production at the small transverse momenta in the transverse momentum-dependent (TMD) parton model (PM), as it is formulated in the soft gluon resummation (SGR) approach, using the nonrelativistic quantum chromodynamics (NRQCD) as the model of the heavy quarkonium hadronization. To extend the scope of the calculation to the phenomenologically important region of intermediate transverse momenta, we use the inverse-error weighting (InEW) matching scheme to combine the TMD PM predictions with the results of the collinear PM (CPM) fixed-order calculations, which are applicable at the large transverse momenta. We predict the direct [Formula: see text] and the prompt [Formula: see text] production cross sections and transverse momentum spectra in proton–proton collisions at the LHC, RHIC, AFTER and NICA energies. Predictions for the polarized [Formula: see text] production processes are also presented.

Source: Modern Physics Letters A

DOI: 10.1142/s0217732325501457

Authors: Vladimir Saleev, Kirill Shilyaev

Institutions: Samara National Research University, Joint Institute for Nuclear Research

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Ministry of Education and Science

Award: G6280553754