Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/138427
Title: | Observation of the Semileptonic Decays B→D∗τ−¯ντ and Evidence for B→Dτ−¯ντ |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 15-Jan-2008 |
Publisher: | American Physical Society |
Abstract: | We present measurements of the semileptonic decays B − → D 0 τ − ¯ ν τ , B − → D * 0 τ − ¯ ν τ , ¯¯¯ B 0 → D + τ − ¯ ν τ , and ¯¯¯ B 0 → D * + τ − ¯ ν τ , which are potentially sensitive to non-standard model amplitudes. The data sample comprises 232 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays collected with the BABAR detector. From a combined fit to B − and ¯¯¯ B 0 channels, we obtain the branching fractions B ( B → D τ − ¯ ν τ ) = ( 0.86 ± 0.24 ± 0.11 ± 0.06 ) % and B ( B → D ∗ τ − ¯ ν τ ) = ( 1.62 ± 0.31 ± 0.10 ± 0.05 ) % (normalized for the ¯¯¯ B 0 ), where the uncertainties are statistical, systematic, and normalization-mode-related. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.100.021801 |
It is part of: | Physical Review Letters, 2008, vol. 100, num. 2, p. 021801 |
URI: | http://hdl.handle.net/2445/138427 |
Related resource: | https://doi.org/10.1103/PhysRevLett.100.021801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
577709.pdf | 258.57 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.