6533b85bfe1ef96bd12bb4a0

RESEARCH PRODUCT

A study of beauty baryons with extended local hidden gauge approach

C. W. XiaoEulogi OsetW.h. LiangW.h. Liang

subject

PhysicsQuarkNuclear and High Energy PhysicsParticle physicsbox diagram010308 nuclear & particles physicsDegenerate energy levelsGauge (firearms)01 natural sciencesBaryonPionheavy quark spin symmetrycoupled channels0103 physical sciencesSpin symmetry010306 general physicsSpin-½

description

Abstract In present work we investigate the interaction of B ‾ N , B ‾ Δ , B ‾ ⁎ N and B ‾ ⁎ Δ 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 Λ b ( 5912 ) and Λ b ( 5920 ) states. In addition to these two Λ 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 .

yearjournalcountryeditionlanguage
2016-04-01Nuclear and Particle Physics Proceedings
https://doi.org/10.1016/j.nuclphysbps.2015.10.044