https://doi.org/10.1140/epja/i2016-16043-0
Regular Article - Theoretical Physics
Baryon states with hidden charm in the extended local hidden gauge approach
1
Departamento de Fısica Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Apartado 22085, 46071, Valencia, Spain
2
Department of Physics, Guangxi Normal University, 541004, Guilin, People’s Republic of China
* e-mail: uchino@ific.uv.es
Received:
23
October
2015
Accepted:
27
January
2016
Published online:
10
March
2016
The s -wave interaction of 
, 
, 
, 
and 
, 
, is studied within a unitary coupled channels scheme with the extended local hidden gauge approach. In addition to the Weinberg-Tomozawa term, several additional diagrams via the pion exchange are also taken into account as box potentials. Furthermore, in order to implement the full coupled channels calculation, some of the box potentials which mix the vector-baryon and pseudoscalar-baryon sectors are extended to construct the effective transition potentials. As a result, we have observed six possible states in several angular momenta. Four of them correspond to two pairs of admixture states, two of 
with 
, and two of 
with 
. Moreover, we find a resonance which couples to the channel and one spin degenerated bound state of with 
.
© SIF, Springer-Verlag Berlin Heidelberg, 2016
