Mass spectra of heavy mesons with instanton effects

Wu, Qian (Department of Physics, Nanjing University, Nanjing 210093, China) ; Hiyama, Emiko (RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, 351-0115 Saitama, Japan) (Department of Physics, Kyushu University, 819-0395 Fukuoka, Japan) ; Kim, Hyun-Chul (Department of Physics, Inha University, Incheon 22212, Republic of Korea) (Advanced Science Research Center, Japan Atomic Energy Agency, Shirakata, Tokai, Ibaraki 319-1195, Japan) (School of Physics, Korea Institute for Advanced Study (KIAS), Seoul 02455, Republic of Korea) ; Yakhshiev, Ulugbek (Department of Physics, Inha University, Incheon 22212, Republic of Korea) ; Zong, Hongshi (Department of Physics, Nanjing University, Nanjing 210093, China) (Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China) (State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, CAS, Beijing 100190, China)

28 December 2018

Abstract: We investigate the mass spectra of ordinary heavy mesons, based on a nonrelativistic potential approach. The heavy–light quark potential contains the Coulomb-type potential arising from one-gluon exchange, the confining potential, and the instanton-induced nonperturbative local heavy–light quark potential. All parameters are theoretically constrained and fixed. We carefully examine the effects from the instanton vacuum. Within the present form of the local potential from the instanton vacuum, we conclude that the instanton effects are rather marginal on the charmed mesons.


Published in: PTEP 2018 (2018) 123D01
Published by: Oxford University Press/Physical Society of Japan
DOI: 10.1093/ptep/pty135
arXiv: 1808.08359
License: CC-BY-3.0



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