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Title
  • en Nonrelativistic Heavy Quarkonium Model Descended from a Quasi-Particle Approach
Creator
    • en Sakai, M.
    • en Hirano, M.
    • en Matsuda, Y.
Accessrights open access
Rights
  • en This is a post-peer-review, pre-copyedit version of an article published in Few-body systems. The final authenticated version is available online at: https://doi.org/10.1007/s00601-022-01782-w
Subject
  • NDC 420
Description
  • Abstract en A Schr¨odinger-type equation for a heavy quarkonium in terms of the dynamical quark mass is obtained in a quasi-particle (QP) approach by Llanes-Estrada and Cotanch. To observe the relationship between the obtained equation and the constituent quark (potential) model equation, we treat the dynamical quark mass by a constant parameter M and expand the equation in 1/M up to order (1/M). The equation reduces to that of the traditional nonrelativistic constituent quark(CQ) model when a nonlocal interaction is neglected. We investigate the nonrelativistic model where the dynamical quark mass M in the Schr¨odinger-type equation is treated as a free parameter and call it the quasi-quark (QQ) model. To elucidate the role of the nonlocal interaction and to observe the reliability of the QQ model, we studied the charmonium S-wave states.
Publisher en Springer Wien
Date
    Issued2023-03
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/91233
Relation
  • isVersionOf DOI https://doi.org/10.1007/s00601-022-01782-w
Journal
    • PISSN 0177-7963
    • EISSN 1432-5411
    • NCID AA1067897X
      • en Few-Body Systems
      • Volume Number64 Issue Number1 Page Start2
File
Oaidate 2024-03-02