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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185719
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
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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.
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BADALOV, A., CASANOVA MOHR, R., GARRIDO BELTRÁN, Lluís, GASCÓN FORA, David, GRACIANI DÍAZ, Ricardo, GRAUGÉS POUS, Eugeni, MANN BENITO, Carla, PICATOSTE OLLOQUI, Eduardo, RIVES MOLINA, Vicente josé, RUIZ, Hugo (ruiz pérez), LHCb Collaboration. 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. _Journal of High Energy Physics_. 2015. Vol. 2015, núm. 24, pàgs. 1-30. [consulta: 23 de gener de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/185719]