Please use this identifier to cite or link to this item:
Title: A hidden-charm S=-1 pentaquark from the decay of Λb into J/ψηΛ states
Author: Feijoo, Alberto
Magas, V. K.
Ramos Gómez, Àngels
Oset Baguena, Eulogio
Keywords: Fenomenologia (Física)
Partícules (Física nuclear)
Acceleradors de partícules
Phenomenological theory (Physics)
Particles (Nuclear physics)
Particle accelerators
Issue Date: 10-Aug-2016
Publisher: Società Italiana di Fisica & Springer Verlag
Abstract: The hidden-charm pentaquark Pc(4450) 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 S=−1 sector. In this work we argue that a hidden-charm strange pentaquark could be seen from the decay of the Λb, just as in the case of the non-strange Pc(4450), but looking into the J/ψηΛ decay mode and forming the invariant mass spectrum of J/ψΛ 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 J/ψηΛ final states to be populated with similar strength as the J/ψK−p states employed for the observation of the non-strange pentaquark. This makes the Λb→J/ψηΛ decay to be an interesting process to observe a possible strange partner of the Pc(4450). We study the dependence of the J/ψΛ mass spectra on various model ingredients and on the unknown properties of the strange pentaquark.
Note: Reproducció del document publicat a:
It is part of: European Physical Journal C, 2016, vol. 76, num. 8, p. 446-1-446-12
Related resource:
ISSN: 1434-6044
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

Files in This Item:
File Description SizeFormat 
670893.pdf1.2 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons