First observation of the decay D0→K-π+μ+μ-in the ρ0-ω region of the dimuon mass spectrum

R. Aaij, C. Abellán Beteta, 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. AndersonG. Andreassi, M. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, P. d'Argent, 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, L. J. Bel, V. Bellee, N. Belloli, 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, P. Billoir, T. Bird, A. Birnkraut, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, M. Borsato, T. J.V. Bowcock, E. Bowen, C. Bozzi, S. Braun, M. Britsch, T. Britton, J. Brodzicka, N. H. Brook, E. Buchanan, C. Burr, A. Bursche, J. Buytaert, S. Cadeddu, R. Calabrese

Resultado de la investigación

20 Citas (Scopus)

Resumen

© 2016 CERN for the benefit of the LHCb Collaboration. A study of the decay D0→K-π+μ+μ-is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb-1. Decay candidates with muon pairs that have an invariant mass in the range 675-875 MeV/c2are considered. This region is dominated by the ρ0and ω resonances. The branching fraction in this range is measured to beB(D0→K-π+μ+μ-)=(4.17±0.12(stat)±0.40(syst))×10-6. This is the first observation of the decay D0→K-π+μ+μ-. Its branching fraction is consistent with the value expected in the Standard Model.
Idioma originalEnglish
Páginas (desde-hasta)558-567
Número de páginas10
PublicaciónPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen757
DOI
EstadoPublished - 10 jun 2016
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Huella Profundice en los temas de investigación de 'First observation of the decay D<sup>0</sup>→K<sup>-</sup>π<sup>+</sup>μ<sup>+</sup>μ<sup>-</sup>in the ρ<sup>0</sup>-ω region of the dimuon mass spectrum'. En conjunto forman una huella única.

  • Citar esto

    Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., ... Calabrese, R. (2016). First observation of the decay D0→K-π+μ+μ-in the ρ0-ω region of the dimuon mass spectrum. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 757, 558-567. https://doi.org/10.1016/j.physletb.2016.04.029