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Title: | 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 |
Author: | Badalov, A. Casanova Mohr, R. Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Mann Benito, Carla Picatoste Olloqui, E. Rives Molina, V. Ruiz, Hugo LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 7-Apr-2015 |
Publisher: | Springer Verlag |
Abstract: | 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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP04(2015)024 |
It is part of: | Journal of High Energy Physics, 2015, vol. 2015, num. 24, p. 1-30 |
URI: | http://hdl.handle.net/2445/185719 |
Related resource: | https://doi.org/10.1007/JHEP04(2015)024 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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