Home | Contact | Sitemap | Chinese | CAS
Search: 
Home │  About Us │  Research │  People │  International Cooperation │  Education & Training │  KITPC │  Papers
  Papers
  Location: Home > Papers
Paper Code  
Title   Vector mesons and electromagnetic form factor of the Lambda hyperon
Authors   Cao, Xu; Dai, Jiang-Ping; Xie, Ya-Ping
Corresponding Author   Dai, JP (reprint author)
Year   2018
Title of Journal  
Volume   98
Number   9
Page   94006
Abstract   The measured electromagnetic form factors of A hyperon in the timelike region are significantly deviated from pQCD prediction. We attribute the nonvanishing cross section near threshold to be the contribution of below-threshold phi(2170) state, supporting its exotic structure. Above the threshold, we find significant role of a wide vector meson with the mass of around 2.34 GeV, which would be the same state present in pp annihilation reactions. As a result, we give a satisfactory description of the behavior of existing data without modifying pQCD expectation.
Full Text  
Full Text Link       
Others: The measured electromagnetic form factors of A hyperon in the timelike region are significantly deviated from pQCD prediction. We attribute the nonvanishing cross section near threshold to be the contribution of below-threshold phi(2170) state, supporting its exotic structure. Above the threshold, we find significant role of a wide vector meson with the mass of around 2.34 GeV, which would be the same state present in pp annihilation reactions. As a result, we give a satisfactory description of the behavior of existing data without modifying pQCD expectation.
Classification:
Source:
Address: Zhong Guan Cun East Street 55 #, P. O. Box 2735, Beijing 100190, P. R. China
Copyright © Institute of Theoretical Physics, Chinese Academy of Sciences, All Rights Reserved