%0 Journal Article
%T Remarks on the P-c structures and triangle singularities
%A Guo, F. K.
%A Meissner, U. G.
%A Nieves, J.
%A Yang, Z.
%J European Physical Journal A
%D 2016
%V 52
%N 10
%I Springer
%@ 1434-6001
%G English
%F Guo_etal2016
%O WOS:000391807700001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2914), last updated on Thu, 02 Feb 2017 09:25:56 +0000
%X It was proposed that the narrow P-c(4450) structure observed by the LHCb Collaboration in the reaction Lambda(b) -> J/psi pK might be due to a triangle singularity around the chi(c1)-proton threshold at 4.45 GeV. We discuss the occurrence of a similar triangle singularity in the J/psi p invariant mass distribution for the decay Lambda(b) -> J/psi p pi, which could explain the bump around 4.45 GeV in the data. More precise measurements of this process would provide valuable information towards an understanding of the P-c structures.
%R 10.1140/epja/i2016-16318-4
%U http://arxiv.org/abs/1605.05113
%U https://doi.org/10.1140/epja/i2016-16318-4
%P 318-6pp