# name
Precise measurements of the properties of the B 1(5721)0 ,+ and B {2/*}(5747)0,+ states and observation of B + ,0 π - ,+ mass structures

# metadata.dc.description.abstract[].value
Invariant mass distributions of B+π − and B0π + 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 B1(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 B0π + combinations. The structures are consistent with the presence of four excited B mesons, labelled BJ (5840)0,+ and BJ (5960)0,+, whose masses and widths are obtained under different hypotheses for their quantum numbers.

# metadata.dc.relation.ispartof[].value
Journal of High Energy Physics, 2015, vol. 2015, num. 24, p. 1-30

# metadata.dc.source[].value
Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.subject.other[].value
Large Hadron Collider (France and Switzerland)

# metadata.dc.title[].value
Precise measurements of the properties of the B 1(5721)0 ,+ and B {2/*}(5747)0,+ states and observation of B + ,0 π - ,+ mass structures