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Nonrelativistic Heavy Quarkonium Model Descended from a Quasi-Particle Approach

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Title: Nonrelativistic Heavy Quarkonium Model Descended from a Quasi-Particle Approach
Authors: Sakai, M. Browse this author
Hirano, M. Browse this author
Katō, K. Browse this author →KAKEN DB
Matsuda, Y. Browse this author
Issue Date: Mar-2023
Publisher: Springer Wien
Journal Title: Few-Body Systems
Volume: 64
Issue: 1
Start Page: 2
Publisher DOI: 10.1007/s00601-022-01782-w
Abstract: 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.
Rights: 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:
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 加藤 幾芳

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