# Search for excited B<inf>c</inf><sup>+</sup> states

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Ali, S
et al (show 82 more authors) (2018) Search for excited B<inf>c</inf><sup>+</sup> states. Journal of High Energy Physics, 2018 (1).

 Text 10.1007%2FJHEP01(2018)138.pdf - OA Published Version Download (557kB)

## Abstract

© 2018, The Author(s). 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.].

Item Type: Article Symplectic Admin 23 Apr 2018 07:50 29 Nov 2021 10:24 10.1007/JHEP01(2018)138 https://livrepository.liverpool.ac.uk/id/eprint/3020505