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Measurement of the ratio of branching fractions B(B0→K *0γ)/B(Bs0→φγ)

  • 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. Arrabito
  • A. 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, S. Belogurov, 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, T. Bird, 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, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson, K. Carvalho Akiba, G. Casse, M. Cattaneo, Ch Cauet, M. Charles, Ph Charpentier, N. Chiapolini, K. Ciba, X. Cid Vidal, G. 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Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The ratio of branching fractions of the radiative B decays B0→K *0γ and B0s→φγ has been measured using 0.37fb -1 of pp collisions at a center of mass energy of √s=7TeV, collected by the LHCb experiment. The value obtained is B(B0→K *0γ)B(B0s→φγ)=1.12±0.08- 0.04-0.08+0.06+0.09, where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions f s/f d. Using the world average for B(B0→K *0γ)=(4.33±0.15)×10 -5, the branching fraction B(B0s→φγ) is measured to be (3.9±0.5)×10 -5, which is the most precise measurement to date.

Original languageEnglish
Article number112013
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number11
DOIs
Publication statusPublished - 25 Jun 2012
Externally publishedYes

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