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Medium modifications of 1P-wave charmonia χcJ(1P) in cold nuclear matter

Ze-Hua Zhang1,2,4,* and Xiang Liu1,2,3,4,†

  • 1School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 2Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MoE, Gansu Provincial Research Center for Basic Disciplines of Quantum Physics, Lanzhou University, Lanzhou 730000, China
  • 3MoE Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, China
  • 4Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China

  • *Contact author: 220220940191@lzu.edu.cn
  • †Contact author: xiangliu@lzu.edu.cn
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Phys. Rev. D 113, 014044 – Published 30 January, 2026Erratum Phys. Rev. D 114, 019901 (2026)

DOI: https://doi.org/10.1103/d1lm-4ks9

Abstract

In this work, we employ the quark-meson coupling model to investigate the mass shifts of 1P-wave charmonia χcJ(1P) (J=0, 1, 2) in cold symmetric nuclear matter by incorporating in-medium loop contributions to the χcJ(1P) self-energy within the unquenched picture. At normal nuclear matter density, we obtain significant mass reductions of about 60 MeV for the χcJ(1P) states, with the χc2(1P) mass shift primarily arising from the vector-vector loop. Our results also indicate the absence of level crossing between the in-medium χcJ(1P) mass and the DD¯ mass threshold up to ρB<3ρ0—a feature that could be probed in the compressed baryonic matter experiment at FAIR and the beam energy scan program at RHIC.

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Erratum

Erratum: Medium modifications of 1P-wave charmonia χcJ(1P) in cold nuclear matter [Phys. Rev. D 113, 014044 (2026)]

Ze-Hua Zhang and Xiang Liu
Phys. Rev. D 114, 019901 (2026)

Article Text

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Phys. Rev. D 113, 014044– Published 30 January, 2026
  • Received 14 October 2025
  • Accepted 14 January 2026
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