Predictions for pentaquark states of hidden charm molecular nature and comparison with experiment

¹ Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, Aptdo. 22085, 46071 Valencia, Spain
² Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
³ School of Physics and Nuclear Energy Engineering and International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191, China
⁴ Departament d’Estructura i Constituents de la Materia and Institut de Ciencies del Cosmos (ICCUB), Universitat deBarcelona, Marti i Franques 1, 08028 Barcelona, Spain
⁵ Department of Physics, Guangxi Normal University, Guilin 541004, China
⁶ Department of Physics, Zhengzhou University, Zhengzhou, Henan 450001, China
⁷ IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigacion de Paterna, Aptdo. 22085, 46071 Valencia, Spain
⁸ Departamento de Fisica, Universidad de Murcia, E-30100 Murcia, Spain

^* e-mail: oset@ific.uv.es

Published online: 29 November 2016

Abstract

Predictions for hidden charm molecules, with and without strangeness, were made prior to the LHCb experiment. We discuss these issues and how these states can be observed in the reactions, Λ_b → J/ψK⁻p, Λ_b → J/ψηΛ, Λ_b → J/ψπ⁻p, Λ_b → J/ψK⁰Λ and Ξ⁻_b → J/ψK⁻Λ by looking at the invariant mass distributions for J/ψp or J/ψΛ.