A search for weakly decaying b-flavored pentaquarks

Abstract

Investigations of the existence of pentaquark states containing a single $b$ (anti)quark decaying weakly into four specific final states J/$\psi K^{+}{\pi }^{-}p$, J/$\psi K^{-}{\pi }^{-}p$, J/$\psi K^{-}{\pi }^{+}p$, and $J/\psi \varphi (1020)p$ are reported. The data sample corresponds to an integrated luminosity of 3.0/fb in 7 and 8 TeV pp collisions acquired with the LHCb detector. Signals are not observed and upper limits are set on the product of the production cross section times branching fraction with respect to that of the ${\Lambda }_b$.

arXiv comment10 pages 6 figures; all figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2017-043.html; version 2 small corrections from PRD review

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• Pentaquarks with anticharm or beauty revisited
• Manifestly exotic pentaquarks with a single heavy quark