Search for excited Bc+ states

Marco Adinolfi, Emma Buchanan, Matthew Chapman, Jeremy Dalseno, Sam Harnew, James Kariuki, Samuel Maddrell-Mander, Paras Naik, Konstantinos Petridis, Gabriela Pomery, Eugenia Price, Claire Prouve, Jonas Rademacker, Sophie Richards, Daniel Saunders, Nicola Skidmore, Jaap Velthuis

Research output: Contribution to journalArticle (Academic Journal)peer-review

22 Citations (Scopus)
187 Downloads (Pure)


A search is performed in the invariant mass spectrum of the B c + π+π system for the excited B c + states B c (21S0)+ and B c (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 B c (21S0)+ and B c (23S1)+ states times the branching fractions of B c (21S0)+ → B c + π+π and B c (23S1)+ → B c * +π+π over the production cross-section of the B c + 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 B c (21S0)+ and B c (23S1)+ in the mass ranges [6830, 6890] MeV/c2 and [6795, 6890] MeV/c2, respectively.
Original languageEnglish
Article number138
Number of pages18
JournalJournal of High Energy Physics
Issue number1
Early online date29 Jan 2018
Publication statusPublished - Jan 2018


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


Dive into the research topics of 'Search for excited Bc+ states'. Together they form a unique fingerprint.

Cite this