@Article{LHCbCollaborationAaij_etal2019,
author="LHCb Collaboration (Aaij, R. et al
and Garcia Martin, L. M.
and Henry, L.
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Vidal, J.
and Sanchez Mayordomo, C.",
title="Observation of a Narrow Pentaquark State, P-c(4312)(+), and of the Two-Peak Structure of the P-c(4450)(+)",
journal="Physical Review Letters",
year="2019",
publisher="Amer Physical Soc",
volume="122",
number="22",
pages="222001 - 11pp",
abstract="A narrow pentaquark state, P-c(4312)(+), decaying to J/psi p, is discovered with a statistical significance of 7.3 sigma in a data sample of Lambda(0)(b) -> J/psi pK(-) decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. The P-c(4450)(+) pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, P-c(4440)(+) and P-c(4457)(+), where the statistical significance of this two-peak interpretation is 5.4 sigma. The proximity of the Sigma(+)(c)(D) over bar (0) and Sigma(+)(c)(D) over bar (*0) thresholds to the observed narrow peaks suggests that they play an important role in the dynamics of these states.",
optnote="WOS:000470882900001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4053), last updated on Tue, 25 Jun 2019 12:51:11 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.122.222001",
opturl="https://arxiv.org/abs/1904.03947",
opturl="https://doi.org/10.1103/PhysRevLett.122.222001",
language="English"
}