Measurement of the Bs0→μ+μ- branching fraction and search for B0→μ+μ- decays at the LHCb experiment

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. Anderlini, J. Anderson, R. Andreassen, J. E. AndrewsR. 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, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, Th Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, E. Bowen, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, I. Burducea, A. Bursche, G. Busetto, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, D. Campora Perez, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, H. Carranza-Mejia, L. Carson, K. Carvalho Akiba, G. Casse

Resultado de la investigaciónrevisión exhaustiva

254 Citas (Scopus)

Resumen

A search for the rare decays Bs0→μ +μ - and B0→μ +μ - is performed at the LHCb experiment. The data analyzed correspond to an integrated luminosity of 1 fb -1 of pp collisions at a center-of-mass energy of 7 TeV and 2 fb -1 at 8 TeV. An excess of Bs0→μ +μ - signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviations. A time-integrated branching fraction of B(Bs0→μ +μ -)=(2.9-1.0+1.1)×10 -9 is obtained and an upper limit of B(B0→μ +μ -)<7.4×10 -10 at 95% confidence level is set. These results are consistent with the standard model expectations.

Idioma originalEnglish
Número de artículo101805
PublicaciónPhysical Review Letters
Volumen111
N.º10
DOI
EstadoPublished - 5 sep 2013
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Física y astronomía (todo)

Huella

Profundice en los temas de investigación de 'Measurement of the Bs0→μ<sup>+</sup>μ<sup>-</sup> branching fraction and search for B0→μ<sup>+</sup>μ<sup>-</sup> decays at the LHCb experiment'. En conjunto forman una huella única.

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