Published October 24, 2008 | Version Published
Journal Article Open

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

Creators

Abstract

We perform a measurement of the CP asymmetry in b → sγ decays using a sample of 383×10^6 B[overline]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 CP 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.

Additional Information

© 2008 The American Physical Society. Received 30 May 2008; published 24 October 2008. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), and STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation.

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Published - Aubert2008p2981Phys_Rev_Lett.pdf

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Additional details

Identifiers

Eprint ID
17033
Resolver ID
CaltechAUTHORS:20091223-140122204

Funding

Department of Energy
NSF
NSERC (Canada)
Commissariat à l'Énergie Atomique (CEA) (France)
French National Centre for Scientific Research (CNRS-IN2P3) (France)
Bundesministerium für Bildung und Forschung (BMBF) (Germany)
Deutsche Forschungsgemeinschaft (DFG) (Germany)
Istituto Nazionale di Fisica Nucleare (INFN) (Italy)
Foundation for Fundamental Research on Matter (FOM) (The Netherlands)
Research Council of Norway (NFR) (Norway)
MES (Russia)
Ministry of Education of Spain (MEC) (Spain)
Science and Technology Facilities Council (STFC) (United Kingdom)
Marie Curie EIF (European Union)
Alfred P. Sloan Foundation

Dates

Created
2010-01-05
Created from EPrint's datestamp field
Updated
2023-03-16
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