%0 Journal Article
%T On the hidden charm pentaquarks in Lambda(b) -> J/psi K- p decay
%A Roca, L.
%A Oset, E.
%J European Physical Journal C
%D 2016
%V 76
%N 11
%I Springer
%@ 1434-6044
%G English
%F Roca+Oset2016
%O WOS:000399930700001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3065), last updated on Thu, 11 May 2017 11:00:44 +0000
%X In a previous work we presented a theoretical analysis of the Lambda(b) -> J/psi K- p reaction based on which a recent experiment by the LHCb collaboration at CERN claimed the existence of two hidden charm pentaquarks, P-c(4380)(+) and P-c(4450)(+). In that work we focused only on the Lambda(1405) and P-c(4450)(+) signals and discussed the possible explanation of this pentaquark state within the picture of a dynamical meson-baryon molecule made up mostly from (D) over bar*Sigma(c) and (D) over bar*Sigma(c)* components. In the present work we improve upon the previous one by considering the total K- p and J/psi p data including all the relevant resonances contributing to the spectra, and discuss the possible nature of both P-c(4380)(+) and P-c(4450)(+). We also discuss several important topics, like the effect of the contact term in the reaction, the viability of reproducing the data without the P-c(4380)(+) and the possible quantum number assignment to these pentaquarks.
%R 10.1140/epjc/s10052-016-4407-z
%U http://arxiv.org/abs/1602.06791
%U https://doi.org/10.1140/epjc/s10052-016-4407-z
%P 591 - 12pp