@article{c99ab7f97fce4a3bb21a41aa19b5826e,
title = "Observation of a Narrow Pentaquark State, Pc (4312)+, and of the Two-Peak Structure of the Pc (4450)+",
abstract = "A narrow pentaquark state, Pc(4312)+, decaying to J/ψp, is discovered with a statistical significance of 7.3σ in a data sample of Λb0→J/ψpK- decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. The Pc(4450)+ pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, Pc(4440)+ and Pc(4457)+, where the statistical significance of this two-peak interpretation is 5.4σ. The proximity of the ςc+{\=D}0 and ςc+{\=D}∗0 thresholds to the observed narrow peaks suggests that they play an important role in the dynamics of these states.",
author = "R. Aaij and \{Abell{\'a}n Beteta\}, C. and B. Adeva and M. Adinolfi and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, \{J. E.\} and F. Archilli and P. D'Argent and \{Arnau Romeu\}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, \{J. J.\} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, \{R. J.\} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Battig and V. Battista and A. Bay and F. Bedeschi and I. Bediaga and A. Beiter and Bel, \{L. J.\} and V. Belavin and S. Belin and N. Beliy and V. Bellee and N. Belloli and K. Belous and I. Belyaev and E. Ben-Haim and G. 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year = "2019",
month = jun,
day = "5",
doi = "10.1103/PhysRevLett.122.222001",
language = "English",
volume = "122",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "22",
}
SDG 17 Partnerships for the Goals