• Open Access

Heavy quark spin multiplet structure of P¯(*)ΣQ(*) molecular states

Yuki Shimizu, Yasuhiro Yamaguchi, and Masayasu Harada
Phys. Rev. D 98, 014021 – Published 16 July 2018

Abstract

We study the structure of heavy quark spin (HQS) multiplets for heavy meson-baryon molecular states in a coupled system of P¯(*)ΣQ(*), constructing the one-pion exchange potential with S-wave orbital angular momentum. Using the light cloud spin basis, we find that there are four types of HQS multiplets classified by the structure of heavy quark spin and light cloud spin. The multiplets which have attractive potential are determined by the sign of the coupling constant for the heavy meson-pion interactions. Furthermore, the difference in the structure of the light cloud spin gives the restrictions of the decay channel, which implies that the partial decay width has the information for the structure of HQS multiplets. This behavior is more likely to appear in the hidden-bottom sector than in the hidden-charm sector.

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  • Received 24 May 2018

DOI:https://doi.org/10.1103/PhysRevD.98.014021

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Yuki Shimizu1,*, Yasuhiro Yamaguchi2,†, and Masayasu Harada1,‡

  • 1Department of Physics, Nagoya University, Nagoya 464-8602, Japan
  • 2Theoretical Research Division, Nishina Center, RIKEN, Hirosawa, Wako, Saitama 351-0198, Japan

  • *yshimizu@hken.phys.nagoya-u.ac.jp
  • yasuhiro.yamaguchi@riken.jp
  • harada@hken.phys.nagoya-u.ac.jp

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Vol. 98, Iss. 1 — 1 July 2018

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