A study of beauty baryons with extended local hidden gauge approach

作者：Xiao C W^*; Liang W H; Oset E

来源：37th International Conference on High Energy Physics (ICHEP), 2014-07-02 to 2014-07-09.

DOI：10.1016/j.nuclphysbps.2015.10.044

• coupled channels
• box diagram
• heavy quark spin symmetry

In present work we investigate the interaction of (B) over barN, (B) over bar Delta, (B) over bar *N and (B) over bar*Delta states, together with their coupled channels. Taking into account the heavy quark spin symmetry for pion exchange and the results of the Weinberg Tomozawa term in the extended local hidden gauge approach, we search for states dynamically generated from the interaction, and find two states with small width, which we associate to the Lambda(b)(5912) and Lambda(b)(5920) states. In addition to these two Lambda(b) states, we find three more states with I = 0 and eight more states in I = 1, some of which are degenerate in different spin J.

• 出版日期2016-6
• 单位广西师范大学