Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131619
Title: | Model-independent search for the decay B+→l+νlγ |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 17-Dec-2009 |
Publisher: | American Physical Society |
Abstract: | We present a search for the radiative leptonic decay B + → ℓ + ν ℓ γ , where ℓ = e , μ , using a data sample of 465 × 10 6 B ¯¯¯ B pairs collected by the BABAR experiment. In this analysis, we fully reconstruct the hadronic decay of one of the B mesons in Υ ( 4 S ) → B + B − decays, then search for evidence of B + → ℓ + ν ℓ γ in the rest of the event. We observe no significant evidence of signal decays and report model-independent branching fraction upper limits of B ( B + → e + ν e γ ) < 17 × 10 − 6 , B ( B + → μ + ν μ γ ) < 24 × 10 − 6 , and B ( B + → ℓ + ν ℓ γ ) < 15.6 × 10 − 6 ( ℓ = e or μ ), all at the 90% confidence level. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.80.111105 |
It is part of: | Physical Review D, 2009, vol. 80, num. 11, p. 111105 |
URI: | http://hdl.handle.net/2445/131619 |
Related resource: | https://doi.org/10.1103/PhysRevD.80.111105 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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