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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Abstract

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.]

Original languageEnglish
Article number24
JournalJournal of High Energy Physics
Volume2015
Issue number4
DOIs
Publication statusPublished - 1 Apr 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015, The Author(s).

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Copyright 2020 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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