Precision measurement of the B<inf>s</inf>-<sup>0</sup> B<inf>s</inf><sup>0</sup> oscillation frequency with the decay B<inf>s</inf>- <sup>0</sup>→ D<inf>sπ</inf><sup>-+</sup>

R. Aaij, C. Abellan Beteta, 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. AndreassenR. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, 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, M. Benayoun, 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. Bjornstad, T. Blake, F. Blanc, J. Blouw, 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

Resultado de la investigaciónrevisión exhaustiva

92 Citas (Scopus)

Resumen

A key ingredient to searches for physics beyond the Standard Model in B s- 0 mixing phenomena is the measurement of the B s- 0 oscillation frequency, which is equivalent to the mass difference Δm s of the B s- 0 mass eigenstates. Using the world's largest B s- 0 meson sample accumulated in a dataset, corresponding to an integrated luminosity of 1.0 fb -1, collected by the LHCb experiment at the CERN LHC in 2011, a measurement of Δm s is presented. A total of about 34 000 B s- 0 → D -+ signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Δm s = 17.768 ± 0.023 (stat) ± 0.006 (syst) ps -1, which is the most precise measurement to date.

Idioma originalEnglish
Número de artículo053021
PublicaciónNew Journal of Physics
Volumen15
DOI
EstadoPublished - 1 may 2013
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Física y astronomía (todo)

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