Hidden-charm decays of X (3915) and Z (3930) as the P-wave charmonia

Chen, Dian-Yong (Nuclear Theory Group, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China) (Research Center for Hadron and CSR Physics, Lanzhou University, Institute of Modern Physics of CAS, Lanzhou 730000, China) ; Liu, Xiang (Research Center for Hadron and CSR Physics, Lanzhou University, Institute of Modern Physics of CAS, Lanzhou 730000, China) (School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China) ; Matsuki, Takayuki (Tokyo Kasei University, 1-18-1 Kaga, Itabashi, Tokyo 173-8602, Japan) (Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198, Japan)

09 April 2015

Abstract: In this work, we investigate the and decays into with the and assignments to and , respectively. The results show that the decay width of is at least one order smaller than that of . This observation explains why only one structure, , has been observed in the invariant mass spectrum for the process .


Published in: PTEP 2015 (2015) 043B05
Published by: Oxford University Press/Physical Society of Japan
DOI: 10.1093/ptep/ptv038
arXiv: 1311.6274
License: CC-BY-3.0



Back to search

Fulltext:
Download fulltextPDF Download fulltextXML Download fulltextPDF (PDFA)