Abstract: Invariant mass distributions of B +π − and B 0π + combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb −1 of pp collision data, recorded by the LHCb detector at centre-of-mass energies of 7 and 8 TeV. Precise measurements of the masses and widths of the B 1(5721) 0,+ and B 2(5747) 0,+ states are reported. Clear enhancements, particularly prominent at high pion transverse momentum, are seen over background in the mass range 5850-6000 MeV in both B +π − and B 0π + combinations. The structures are consistent with the presence of four excited B mesons, labelled B J (5840) 0,+ and B J (5960) 0,+, whose masses and widths are obtained under different hypotheses for their quantum numbers.[Figure not available: see fulltext.]
Bibliographical notePublisher Copyright:
© 2015, The Author(s).
Copyright 2020 Elsevier B.V., All rights reserved.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics