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Measurement of time-dependent CP asymmetry in B^0→K_S^0π^0γ decays

Aubert, B. and Cheng, C. H. and Doll, D. A. and Echenard, B. and Fang, F. and Hitlin, D. G. and Narsky, I. and Piatenko, T. and Porter, F. C. (2008) Measurement of time-dependent CP asymmetry in B^0→K_S^0π^0γ decays. Physical Review D, 78 (7). Art. No. 071102. ISSN 2470-0010. doi:10.1103/PhysRevD.78.071102.

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We measure the time-dependent CP asymmetry in B^0→K_S^0π^0γ decays for two regions of K_S^0-π^0 invariant mass, m(KS0π0), using the final BABAR data set of 467×10^6 BB pairs collected at the PEP-II e^+e^- collider at SLAC. We find 339±24 B^0→K^(*0)γ candidates and measure S_(K*γ)=-0.03±0.29±0.03 and C_(K*_γ)=-0.14±0.16±0.03. In the range 1.1<m(K_S^0π^0)<1.8  GeV/c^2 we find 133±20 B^0→K_S^0π^0γ candidates and measure S_(KS^0π^0γ)=-0.78±0.59±0.09 and C_(KS^0π^0γ)=-0.36±0.33±0.04. The uncertainties are statistical and systematic, respectively.

Item Type:Article
Related URLs:
URLURL TypeDescription
Cheng, C. H.0000-0002-8382-0447
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2008 The American Physical Society. Received 19 July 2008; published 13 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.
Funding AgencyGrant Number
Department of EnergyUNSPECIFIED
Natural Sciences and Engineering Research Council (Canada)UNSPECIFIED
Commissariat à l'Énergie Atomique (French Atomic Energy Commission)UNSPECIFIED
Centre National de la Recherche Scientifique (National Center for Scientific Research, France) Institut National de Physique Nucléaire et Physique des Particules (France)UNSPECIFIED
Bundesministerium für Bildung und Forschung (German: Federal Ministry of Education and Research; Bonn, Germany)UNSPECIFIED
Deutsche Forschungsgemeinschaft (German Research Council)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare, ItalyUNSPECIFIED
Foundation for Fundamental Research on Matter (The Netherlands)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
Ministerio de Educación y Ciencia (Spain: Ministry for Education and Science)UNSPECIFIED
Science and Technology Facilities Council (UK)UNSPECIFIED
Marie Curie EIF (European Union)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Issue or Number:7
Classification Code:PACS: 13.20.He, 11.30.Er, 14.40.Nd
Record Number:CaltechAUTHORS:20100623-105110660
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18770
Deposited By: Ruth Sustaita
Deposited On:23 Jun 2010 20:33
Last Modified:08 Nov 2021 23:46

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