Measurement of B → K∗(892)γ Branching Fractions and CP and Isospin Asymmetries

BABAR Collaboration

doi:10.1103/PhysRevLett.103.211802

Measurement of B → K^∗(892)γ Branching Fractions and CP and Isospin Asymmetries

BABAR Collaboration

Université Savoie Mont Blanc
University of Barcelona
INFN Sezione di Bari
Università degli studi di Bari Aldo Moro
University of Bergen
Ernest Orlando Lawrence Berkeley National Laboratory
University of Birmingham
Ruhr-University Bochum
University of British Columbia
Brunel University London
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Long Beach VA and University of California
University of California, Riverside
University of California, San Diego
University of California, Santa Barbara
University of California at Santa Cruz
California Institute of Technology
University of Cincinnati
University of Colorado Boulder
Cooperative Institute for Research in the Atmosphere
Temple University
University of Dortmund
Technical University Dresden
Ip Paris
University of Edinburgh
Sezione INFN di Ferrara
University of Ferrara
LNF-INFN
University of Perugia
Sezione di Genova
University of Genoa
Harvard University
University of Heidelberg
Humboldt-Universität zu Berlin
Imperial College London
University of Iowa
Iowa State University
Johns Hopkins University
Laboratoire de l'Accélérateur Linéaire
University of Rome
Lawrence Livermore National Laboratory
University of Liverpool
Queen Mary University of London
Royal Holloway University of London
University of Louisville
Johannes Gutenberg University
University of Manchester
University of Maryland, College Park
UMass Amherst
Massachusetts Institute of Technology
McGill University
Sezione INFN di Milano
University of Milano
University of Mississippi
Universety of South Alabama
Universite de Montreal
Mount Holyoke College
INFN Sezione di Napoli
University of Naples Federico II
Science Park 105
University of Notre Dame
The Ohio State University
University of Oregon
INFN
University of Padova
Universités Paris VI and VII
University of Pennsylvania
INFN Sezione di Perugia
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
University of Pisa
Dipartimento di Scienze Biomediche
Scuola Normale Superiore di Pisa
Princeton University
Sezione di Roma
Dipartimento di Fisica
Universität Rostock
CCLRC Rutherford Appleton Laboratory
CEA/UVSQ/CNRS
Stanford Linear Accelerator Center
University of South Carolina
Stanford University
State University of New York Albany
Tel Aviv University
University of Tennessee
The University of Texas at Austin
University of Texas
INFN Sezione di Torino
University of Turin
INFN Sezione di Trieste
University of Trieste
University of Valencia
University of Victoria
University of Warwick
University of Wisconsin-Madison

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

51 Citations (Scopus)

Résumé

We present an analysis of the decays B⁰ → K^∗0(892)γ and B⁺ → K^∗+(892)γ using a sample of about 383 × 10⁶ BB events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B⁰ → K^∗0γ = (4.47 ± 0.10 ± 0.16) × 10^-5 and B(B⁺ → K^∗+ γ) = (4.22 ± 0.14 ± 0.16) × 10^-5. We constrain the direct CP asymmetry to be -0.033 < A(B → K^∗ γ) < 0.028 and the isospin asymmetry to be 0.017 < δ_0- < 0.116, where the limits are determined by the 90% confidence interval and include both the statistical and systematic uncertainties.

langue originale	Anglais
Numéro d'article	211802
journal	Physical Review Letters
Volume	103
Numéro de publication	21
Les DOIs	https://doi.org/10.1103/PhysRevLett.103.211802
état	Publié - 19 nov. 2009

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10.1103/PhysRevLett.103.211802

Contient cette citation

@article{d71caca85c4249899c7e1755ba4fa9f2,

title = "Measurement of B → K∗(892)γ Branching Fractions and CP and Isospin Asymmetries",

abstract = "We present an analysis of the decays B0 → K∗0(892)γ and B+ → K∗+(892)γ using a sample of about 383 × 106 BB events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B0 → K∗0γ = (4.47 ± 0.10 ± 0.16) × 10-5 and B(B+ → K∗+ γ) = (4.22 ± 0.14 ± 0.16) × 10-5. We constrain the direct CP asymmetry to be -0.033 < A(B → K∗ γ) < 0.028 and the isospin asymmetry to be 0.017 < δ0- < 0.116, where the limits are determined by the 90\% confidence interval and include both the statistical and systematic uncertainties.",

author = "\{BABAR Collaboration\} and B. Aubert and Y. Karyotakis and Lees, \{J. P.\} and V. Poireau and E. Prencipe and X. Prudent and V. Tisserand and \{Garra Tico\}, J. and E. Grauges and M. Martinelli and A. Palano and M. Pappagallo and G. Eigen and B. Stugu and L. Sun and M. Battaglia and Brown, \{D. N.\} and Kerth, \{L. T.\} and Kolomensky, \{Yu G.\} and G. Lynch and Osipenkov, \{I. L.\} and K. Tackmann and T. Tanabe and Hawkes, \{C. M.\} and N. Soni and Watson, \{A. T.\} and H. Koch and T. Schroeder and Asgeirsson, \{D. J.\} and Fulsom, \{B. G.\} and C. Hearty and Mattison, \{T. S.\} and McKenna, \{J. A.\} and M. Barrett and A. Khan and A. Randle-Conde and Blinov, \{V. E.\} and Bukin, \{A. D.\} and Buzykaev, \{A. R.\} and Druzhinin, \{V. P.\} and Golubev, \{V. B.\} and Onuchin, \{A. P.\} and Serednyakov, \{S. I.\} and Skovpen, \{Yu I.\} and Solodov, \{E. P.\} and Todyshev, \{K. Yu\} and M. Bondioli and S. Curry and D. Bernard and M. Verderi",

note = "Publisher Copyright: {\textcopyright} 2009 American Physical Society.",

year = "2009",

month = nov,

day = "19",

doi = "10.1103/PhysRevLett.103.211802",

language = "English",

volume = "103",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

TY - JOUR

T1 - Measurement of B → K∗(892)γ Branching Fractions and CP and Isospin Asymmetries

AU - BABAR Collaboration

AU - Aubert, B.

AU - Karyotakis, Y.

AU - Lees, J. P.

AU - Poireau, V.

AU - Prencipe, E.

AU - Prudent, X.

AU - Tisserand, V.

AU - Garra Tico, J.

AU - Grauges, E.

AU - Martinelli, M.

AU - Palano, A.

AU - Pappagallo, M.

AU - Eigen, G.

AU - Stugu, B.

AU - Sun, L.

AU - Battaglia, M.

AU - Brown, D. N.

AU - Kerth, L. T.

AU - Kolomensky, Yu G.

AU - Lynch, G.

AU - Osipenkov, I. L.

AU - Tackmann, K.

AU - Tanabe, T.

AU - Hawkes, C. M.

AU - Soni, N.

AU - Watson, A. T.

AU - Koch, H.

AU - Schroeder, T.

AU - Asgeirsson, D. J.

AU - Fulsom, B. G.

AU - Hearty, C.

AU - Mattison, T. S.

AU - McKenna, J. A.

AU - Barrett, M.

AU - Khan, A.

AU - Randle-Conde, A.

AU - Blinov, V. E.

AU - Bukin, A. D.

AU - Buzykaev, A. R.

AU - Druzhinin, V. P.

AU - Golubev, V. B.

AU - Onuchin, A. P.

AU - Serednyakov, S. I.

AU - Skovpen, Yu I.

AU - Solodov, E. P.

AU - Todyshev, K. Yu

AU - Bondioli, M.

AU - Curry, S.

AU - Bernard, D.

AU - Verderi, M.

PY - 2009/11/19

Y1 - 2009/11/19

N2 - We present an analysis of the decays B0 → K∗0(892)γ and B+ → K∗+(892)γ using a sample of about 383 × 106 BB events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B0 → K∗0γ = (4.47 ± 0.10 ± 0.16) × 10-5 and B(B+ → K∗+ γ) = (4.22 ± 0.14 ± 0.16) × 10-5. We constrain the direct CP asymmetry to be -0.033 < A(B → K∗ γ) < 0.028 and the isospin asymmetry to be 0.017 < δ0- < 0.116, where the limits are determined by the 90% confidence interval and include both the statistical and systematic uncertainties.

AB - We present an analysis of the decays B0 → K∗0(892)γ and B+ → K∗+(892)γ using a sample of about 383 × 106 BB events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B0 → K∗0γ = (4.47 ± 0.10 ± 0.16) × 10-5 and B(B+ → K∗+ γ) = (4.22 ± 0.14 ± 0.16) × 10-5. We constrain the direct CP asymmetry to be -0.033 < A(B → K∗ γ) < 0.028 and the isospin asymmetry to be 0.017 < δ0- < 0.116, where the limits are determined by the 90% confidence interval and include both the statistical and systematic uncertainties.

U2 - 10.1103/PhysRevLett.103.211802

DO - 10.1103/PhysRevLett.103.211802

M3 - Article

AN - SCOPUS:70450167515

SN - 0031-9007

VL - 103

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 211802

ER -

Measurement of B → K∗(892)γ Branching Fractions and CP and Isospin Asymmetries

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Contient cette citation

Measurement of B → K^∗(892)γ Branching Fractions and CP and Isospin Asymmetries