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http://hdl.handle.net/2445/131398
Title: | Measurement of branching fractions in radiative B decays to ηKγ and search for B decays to η′Kγ |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 2006 |
Publisher: | American Physical Society |
Abstract: | We present measurements of the B → η K γ branching fractions and upper limits for the B → η ′ K γ branching fractions. For B + → η K + γ we also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232 × 10 6 produced B ¯¯¯ B pairs. The results for branching fractions and upper limits at 90% confidence level in units of 10 − 6 are: B ( B 0 → η K 0 γ ) = 11.3 + 2.8 − 2.6 ± 0.6 , B ( B + → η K + γ ) = 10.0 ± 1.3 ± 0.5 , B ( B 0 → η ′ K 0 γ ) < 6.6 , B ( B + → η ′ K + γ ) < 4.2 . The charge asymmetry in the decay B + → η K + γ is A ch = − 0.09 ± 0.12 ± 0.01 . The first errors are statistical and the second systematic. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.74.031102 |
It is part of: | Physical Review D, 2006, vol. 74, num. 3, p. 031102(R) |
URI: | http://hdl.handle.net/2445/131398 |
Related resource: | https://doi.org/10.1103/PhysRevD.74.031102 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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