Precise measurements of the properties of the B<inf>1</inf>(5721)<sup>0,+</sup> and B<inf>2</inf><sup>*</sup>(5747)<sup>0,+</sup> states and observation of B <sup>+,0</sup>π<sup>−,+</sup> mass structures

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. Anderson, R. AndreassenM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, A. Bertolin, M. O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, M. Borsato, T. J.V. Bowcock, E. Bowen, C. Bozzi, D. Brett, M. Britsch, T. Britton, J. Brodzicka, N. H. Brook, A. Bursche, J. Buytaert, S. Cadeddu, R. Calabrese, M. Calvi, M. Calvo Gomez, P. Campana, D. Campora Perez, L. Capriotti, A. Carbone

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12 Citas (Scopus)

Resumen

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.]

Idioma originalEnglish
Número de artículo24
PublicaciónJournal of High Energy Physics
Volumen2015
N.º4
DOI
EstadoPublished - 1 abr 2015
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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