Baryon states with open beauty in the extended local hidden gauge approach
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Baryon states with open beauty in the extended local hidden gauge approach

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Baryon states with open beauty in the extended local hidden gauge approach

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dc.contributor.author Liang, W. H.
dc.contributor.author Xiao, Chu Wen
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2016-04-22T09:30:09Z
dc.date.available 2016-04-22T09:30:09Z
dc.date.issued 2014
dc.identifier.uri http://hdl.handle.net/10550/52990
dc.description.abstract In this paper, we examine 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, by using a mapping from the light meson sector. The assumption that the heavy quarks act as spectators at the quark level automatically leads us to the results of the heavy quark spin symmetry for pion exchange and reproduces the results of the Weinberg Tomozawa term, coming from light vector exchanges in the extended local hidden gauge approach. With this dynamics we look for states dynamically generated from the interaction and find two states with nearly zero width, which we associate to the A(b)(5912) and A(b)(5920) states. The states couple mostly to (B) over bar *N, which are degenerate with the Weinberg Tomozawa interaction. The difference of masses between these two states, with J = 1/2 and 3/2, respectively, is due to pion exchange connecting these states to intermediate (B) over barN states. In addition to these two A(b) states, we find three more states with I = 0, one of them nearly degenerate in two states of J = 1/2, 3/2. Furthermore, we also find eight more states in I = 1, two of them degenerate in J = 1/2, 3/2, and another two degenerate in J = 1/2, 3/2, 5/2.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2014, vol. 89, num. 5, p. 054023 - 1-054023 - 15
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Liang, W. H. Xiao, Chu Wen Oset Báguena, Eulogio 2014 Baryon states with open beauty in the extended local hidden gauge approach Physical Review D 89 5 054023 - 1 054023 - 15
dc.subject Física
dc.title Baryon states with open beauty in the extended local hidden gauge approach
dc.type info:eu-repo/semantics/article
dc.date.updated 2016-04-22T09:30:09Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.89.054023
dc.identifier.idgrec 098266

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