First observation of the decay B̄<inf>s</inf><sup>0</sup>→D<sup>0</sup>K<sup>×0</sup> and a measurement of the ratio of branching fractions B(B̄<inf>s</inf><sup>0</sup>→D<sup>0</sup>K<sup>×0</sup>) B(B̄<sup>0</sup>→D<sup>0</sup>ρ<sup>0</sup>)

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, Y. Amhis, J. Anderson, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, L. ArrabitoA. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, D. S. Bailey, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, I. Bediaga, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. van den Brand, J. Bressieux, D. Brett, S. Brisbane, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, J. M. Caicedo Carvajal, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson, K. Carvalho Akiba

Resultado de la investigaciónrevisión exhaustiva

7 Citas (Scopus)

Resumen

The first observation of the decay B̄ s 0→D 0K ×0 using pp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb -1, is reported. A signal of 34.4±6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The B̄ s 0→D 0K ×0 branching fraction is measured relative to that of B̄0→D 0 ρ 0: B(B̄ s 0→D 0K ×0) B(B̄ 0→D 0ρ 0)=1.48±0 .34±0.15±0.12, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B 0 and Bs0 hadronisation fractions.

Idioma originalEnglish
Páginas (desde-hasta)32-39
Número de páginas8
PublicaciónPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen706
N.º1
DOI
EstadoPublished - 30 nov 2011
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Física nuclear y de alta energía

Huella

Profundice en los temas de investigación de 'First observation of the decay B̄<inf>s</inf><sup>0</sup>→D<sup>0</sup>K<sup>×0</sup> and a measurement of the ratio of branching fractions B(B̄<inf>s</inf><sup>0</sup>→D<sup>0</sup>K<sup>×0</sup>) B(B̄<sup>0</sup>→D<sup>0</sup>ρ<sup>0</sup>)'. En conjunto forman una huella única.

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