Measurement of the CP Asymmetry in b→sγ Using a Sum of Exclusive Final States

We perform a measurement of the C P asymmetry in b → s γ decays using a sample of 383 × 10 6 B ¯¯¯ B events collected by the BABAR detector at the SLAC PEP-II asymmetric B factory. We reconstruct 16 flavor-specific B decay modes containing a high-energy photon and a hadronic system X s containing an...

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Published in:Physical review letters 2008-10
Main Authors: Garra Ticó, Jordi, Graugés Pous, Eugeni, BABAR Collaboration
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Language:English
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Experiments
Física de partícules
Particle physics
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creator Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
description We perform a measurement of the C P asymmetry in b → s γ decays using a sample of 383 × 10 6 B ¯¯¯ B events collected by the BABAR detector at the SLAC PEP-II asymmetric B factory. We reconstruct 16 flavor-specific B decay modes containing a high-energy photon and a hadronic system X s containing an s quark. We measure the C P asymmetry to be − 0.011 ± 0.030 ( stat ) ± 0.014 ( syst ) for a hadronic system mass between 0.6 and 2.8     GeV / c 2 .
doi_str_mv 10.1103/PhysRevLett.101.171804
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subjects Experiments
Física de partícules
Particle physics
title Measurement of the CP Asymmetry in b→sγ Using a Sum of Exclusive Final States
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