Search for excited Bc + states

The LHCb Collaboration

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25 Citations (Scopus)

Abstract

A search is performed in the invariant mass spectrum of the Bc +π+π system for the excited Bc + states Bc(21S0)+ and Bc(23S1)+ using a data sample of pp collisions collected by the LHCb experiment at the centre-of-mass energy of s=8 TeV, corresponding to an integrated luminosity of 2 fb−1. No evidence is seen for either state. Upper limits on the ratios of the production cross-sections of the Bc(21S0)+ and Bc(23S1)+ states times the branching fractions of Bc(21S0)+ → Bc +π+π and Bc(23S1)+ → Bc * +π+π over the production cross-section of the Bc + state are given as a function of their masses. They are found to be between 0.02 and 0.14 at 95% confidence level for Bc(21S0)+ and Bc(23S1)+ in the mass ranges [6830, 6890] MeV/c2 and [6795, 6890] MeV/c2, respectively.[Figure not available: see fulltext.].

Original languageEnglish
Article number138
JournalJournal of High Energy Physics
Volume2018
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • B physics
  • Hadron-Hadron scattering (experiments)
  • Spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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