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Title: | Measurement of the ratio of branching fractions B(B0→K*0γ)/B(B0s→ϕγ) |
Author: | Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Domingo Bonal, Francesc Garrido Beltrán, Lluís Gascón Fora, David Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Musy, Marco Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Roselló, M. Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 1-Jun-2012 |
Publisher: | American Physical Society |
Abstract: | The ratio of branching fractions of the radiative B decays B 0 → K * 0 γ and B 0 s → ϕ γ has been measured using 0.37 fb − 1 of p p collisions at a center of mass energy of √ s = 7 TeV , collected by the LHCb experiment. The value obtained is B ( B 0 → K * 0 γ ) B ( B 0 s → ϕ γ ) = 1.12 ± 0.08 + 0.06 + 0.09 − 0.04 − 0.08 , 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 ( B 0 → K * 0 γ ) = ( 4.33 ± 0.15 ) × 10 − 5 , the branching fraction B ( B 0 s → ϕ γ ) is measured to be ( 3.9 ± 0.5 ) × 10 − 5 , which is the most precise measurement to date. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.112013 |
It is part of: | Physical Review D, 2012, vol. 85, num. 11, p. 112013 |
URI: | http://hdl.handle.net/2445/131780 |
Related resource: | https://doi.org/10.1103/PhysRevD.85.112013 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Física de la Matèria Condensada) |
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