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Nonrelativistic Heavy Quarkonium Model Descended from a Quasi-Particle Approach
| 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: https://doi.org/10.1007/s00601-022-01782-w |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/91233 |
| 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)
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Submitter: 加藤 幾芳
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