Branching fraction and CP asymmetry of the decays B<sup>+</sup>→K<inf>S</inf><sup>0</sup>π<sup>+</sup> and B<sup>+</sup>→K<inf>S</inf><sup>0</sup>K<sup>+</sup>

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, 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, 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, G. Carboni, R. Cardinale, A. Cardini, H. Carranza-Mejia, L. Carson, K. Carvalho Akiba

Resultado de la investigaciónrevisión exhaustiva

8 Citas (Scopus)

Resumen

An analysis of B +→K S 0π + and B +→K S 0K + decays is performed with the LHCb experiment. The pp collision data used correspond to integrated luminosities of 1fb -1 and 2fb -1 collected at centre-of-mass energies of √s=7TeV and √s=8TeV, respectively. The ratio of branching fractions and the direct CP asymmetries are measured to be B(B +→K S0K +)/B(B +→K S 0π +)=0.064±0.009 (stat.)±0.004(syst.), A CP(B +→K S 0π +)=-0.022±0.025(stat.)±0.010 (syst.) and A CP(B +→K S 0K +)=-0.21±0.14 (stat.)±0.01 (syst.). The data sample taken at √s=7 TeV is used to search for B c +→K S 0K + decays and results in the upper limit (f c{dot operator}B(B c +→K S 0K +))/(fu{dot operator}B(B +→K S 0π +))<5.8×10-2 at 90% confidence level, where f c and f u denote the hadronisation fractions of a b- quark into a Bc+ or a B + meson, respectively.

Idioma originalEnglish
Páginas (desde-hasta)646-655
Número de páginas10
PublicaciónPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen726
N.º4-5
DOI
EstadoPublished - 1 ene 2013
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Física nuclear y de alta energía

Huella

Profundice en los temas de investigación de 'Branching fraction and CP asymmetry of the decays B<sup>+</sup>→K<inf>S</inf><sup>0</sup>π<sup>+</sup> and B<sup>+</sup>→K<inf>S</inf><sup>0</sup>K<sup>+</sup>'. En conjunto forman una huella única.

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