• Open Access

Investigation of the possible DD¯*/BB¯* and DD*/B¯B¯* bound states

Meng-Jie Zhao, Zhen-Yang Wang, Chao Wang, and Xin-Heng Guo
Phys. Rev. D 105, 096016 – Published 17 May 2022

Abstract

In this work, we systematically study the DD¯*/BB¯* and DD*/B¯B¯* systems with the Bethe-Salpeter equation in the ladder and instantaneous approximations for the kernel. By solving the Bethe-Salpeter equation numerically with the kernel containing the direct and crossed one-particle exchange diagrams and introducing three different form factors (monopole, dipole, and exponential form factors) at the vertices, we find only the isoscalar DD¯*/BB¯* and DD*/B¯B¯* systems can exist as bound states. This indicate that the X(3872) and Tcc+ could be accommodated as IG(JPC)=0+(1++) DD¯* and (I)JP=(0)1+DD* bound states while the bound-state explanations for Zb(10610) and Zc(3900) are excluded.

  • Received 25 December 2021
  • Accepted 26 April 2022

DOI:https://doi.org/10.1103/PhysRevD.105.096016

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)

  1. Physical Systems
Atomic, Molecular & OpticalParticles & Fields

Authors & Affiliations

Meng-Jie Zhao and Zhen-Yang Wang*

  • Physics Department, Ningbo University, Zhejiang 315211, China

Chao Wang

  • School of Ecology and Environment, Northwestern Polytechnical University, Xi’an 710072, China

Xin-Heng Guo

  • College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China

  • *Corresponding author. wangzhenyang@nbu.edu.cn
  • chaowang@nwpu.edu.cn
  • Corresponding author. xhguo@bnu.edu.cn

Article Text

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Issue

Vol. 105, Iss. 9 — 1 May 2022

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