https://doi.org/10.1140/epjc/s10052-016-4302-7
Regular Article - Theoretical Physics
A hidden-charm 
pentaquark from the decay of 
into 
states
1
Departament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
2
Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain
* e-mail: angels.ramos@icc.ub.edu
Received:
12
May
2016
Accepted:
1
August
2016
Published online:
10
August
2016
The hidden-charm pentaquark 
observed recently by the LHCb collaboration may be of molecular nature, as advocated by some unitary approaches that also predict pentaquark partners in the strangeness 
sector. In this work we argue that a hidden-charm strange pentaquark could be seen from the decay of the 
, just as in the case of the non-strange , but looking into the 
decay mode and forming the invariant mass spectrum of 
pairs. In the model presented here, which assumes a standard weak decay topology and incorporates the hadronization process and final-state interaction effects, we find the final states to be populated with similar strength as the 
states employed for the observation of the non-strange pentaquark. This makes the 
decay to be an interesting process to observe a possible strange partner of the . We study the dependence of the mass spectra on various model ingredients and on the unknown properties of the strange pentaquark.
© The Author(s), 2016
