Global Bayesian analysis of J / ψ photoproduction on proton and lead targets

Year: 2025

Type: article

Abstract: We perform a global Bayesian analysis of diffractive J / ψ production in γ + p and γ + Pb collisions using a color glass condensate (CGC) based calculation framework. As past calculations have shown that CGC-based models typically overpredict the J / ψ production in γ + Pb collisions at high center of mass energy, we address the question of whether it is possible to describe coherent and incoherent diffractive J / ψ data from γ + p collisions at Hadron–Electron Ring Accelerator (HERA) and the LHC, and from γ + Pb collisions at the LHC simultaneously. Our results indicate that a simultaneous description of γ + p and γ + Pb data is challenging, with results improving when an overall K -factor—scaling γ + p and γ + Pb cross sections to absorb model uncertainties—is introduced.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/pcmz-dyz1

Authors: Heikki Mäntysaari, Hendrik Roch, Farid Salazar, Björn Schenke, Chun Shen, Wenbin Zhao

Institutions: Helsinki Institute of Physics, University of Jyväskylä, Wayne State University, Brookhaven National Laboratory, RIKEN BNL Research Center, Temple University, Lawrence Berkeley National Laboratory

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Science Foundation, U.S. Department of Energy, European Commission, Academy of Finland, Office of Science, European Research Council, RIKEN, Nuclear Physics, Centre of Excellence in Future Low-Energy Electronics Technologies, Australian Research Council, Brookhaven National Laboratory

OpenAlex ID: W4417267701