Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131822
Title: | Branching fraction measurement of B+→ωℓ+ν decays |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 1-Feb-2013 |
Publisher: | American Physical Society |
Abstract: | We present a measurement of the B + → ω ℓ + ν branching fraction based on a sample of 467 million B ¯¯¯ B pairs recorded by the BABAR detector at the SLAC PEP-II e + e − collider. We observe 1125 ± 131 signal decays, corresponding to a branching fraction of B ( B + → ω ℓ + ν ) = ( 1.21 ± 0.14 ± 0.08 ) × 10 − 4 , where the first error is statistical and the second is systematic. The dependence of the decay rate on q 2 , the invariant mass squared of the leptons, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.87.032004 |
It is part of: | Physical Review D, 2013, vol. 87, num. 3, p. 032004 |
URI: | http://hdl.handle.net/2445/131822 |
Related resource: | https://doi.org/10.1103/PhysRevD.87.032004 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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628961.pdf | 357.58 kB | Adobe PDF | View/Open |
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