Research PapersNo Access

Structure of $X_{b}$ from line shape analysis

Department of Physics, Xinjiang University, Urumqi 830046, P. R. China

and

Department of Physics, Xinjiang University, Urumqi 830046, P. R. China

State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China

E-mail Address: chengy@pku.edu.cn

Corresponding author

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https://doi.org/10.1142/S0217732316500358Cited by:0 (Source: Crossref)

Abstract

We study the production line shape of $B^{*} \bar{B}$ near threshold, where the $B^{*} \bar{B}$ pair comes from the resonance $X_{b}$ . Our study shows that the line shape depends sensitively on the binding energy and the probability of finding an elementary state in the physical bound state. Both of the two parameters are crucial to identify the structure of $X_{b}$ . Therefore, the line shape measurement can shed light on the structure of $X_{b}$ .

Keywords:

PACS: 14.40.Rt

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