Traces of the hidden-charm S=−1 pentaquark in the Λb→J/ΨηΛ decay V.K. Magas, A. Feijoo, E. Oset and A. Ramos EPJ Web Conf., 137 (2017) 06015 Published online: 22 March 2017 DOI: 10.1051/epjconf/201713706015