Observation of the decay B0 → ρ+ ρ- and measurement of the branching fraction and polarization

BABAR Collaboration

doi:10.1103/PhysRevD.69.031102

Observation of the decay B⁰ → ρ⁺ ρ^- and measurement of the branching fraction and polarization

BABAR Collaboration

Laboratoire de Physique des Particules
Università degli studi di Bari Aldo Moro
Institute of High Energy Physics, Chinese Academy of Sciences
University of Bergen
Ernest Orlando Lawrence Berkeley National Laboratory
University of Birmingham
Ruhr-University Bochum
University of Bristol
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, Los Angeles
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
Technical University Dresden
University of Edinburgh
University of Ferrara
Florida A and M University
LNF-INFN
University of Genoa
Harvard University
University of Heidelberg
Imperial College London
University of Iowa
Iowa State University
Laboratoire de l'Accélérateur Linéaire
Lawrence Livermore National Laboratory
University of Liverpool
Queen Mary University of London
Royal Holloway University of London
University of Louisville
University of Manchester
University of Maryland, College Park
UMass Amherst
Massachusetts Institute of Technology
McGill University
University of Milano
University of Mississippi
Universite de Montreal
Mount Holyoke College
University of Naples Federico II
Università degli Studi della Basilicata
Science Park 105
University of Notre Dame
Oak Ridge National Laboratory
The Ohio State University
University of Oregon
University of Padova
Sorbonne Université
University of Pavia
University of Pennsylvania
University of Perugia
University of Pisa
University of Valencia
Prairie View A and M University
Princeton University
Dipartimento di Fisica
Universität Rostock
CCLRC Rutherford Appleton Laboratory
Institut Pierre Simon Laplace, CNRS and CEA
University of South Carolina
Stanford Linear Accelerator Center
Stanford University
State University of New York Albany
University of Tennessee
The University of Texas at Austin
University of Texas
University of Turin
University of Trieste
Vanderbilt University
University of Victoria
University of Wisconsin-Madison
Yale University

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

Résumé

We have observed the rare decay B⁰ → ρ⁺ ρ^- in a sample of 89 million BB̄ pairs recorded with the BABAR detector. The number of observed events is 88_-21 ⁺²³±9 with a significance of 5.1 standard deviations with systematic uncertainties included. The branching fraction and the longitudinal polarization are measured to be β(B⁰ → ρ⁺ ρ^-) = (25_-6-6 ⁺⁷⁺⁵× 10^-6 and Γ_LΓ = 0.98_-0.08 ^+0.02±0. 03, respectively.

langue originale	Anglais
Numéro d'article	031102
journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	69
Numéro de publication	3
Les DOIs	https://doi.org/10.1103/PhysRevD.69.031102
état	Publié - 1 janv. 2004

Accès au document

10.1103/PhysRevD.69.031102

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Contient cette citation

@article{22f4a2f54f804c92961598331827320c,

title = "Observation of the decay B0 → ρ+ ρ- and measurement of the branching fraction and polarization",

abstract = "We have observed the rare decay B0 → ρ+ ρ- in a sample of 89 million B{\=B} pairs recorded with the BABAR detector. The number of observed events is 88-21 +23±9 with a significance of 5.1 standard deviations with systematic uncertainties included. The branching fraction and the longitudinal polarization are measured to be β(B0 → ρ+ ρ-) = (25-6-6 +7+5× 10-6 and ΓLΓ = 0.98-0.08 +0.02±0. 03, respectively.",

author = "\{BABAR Collaboration\} and B. Aubert and R. Barate and D. Boutigny and F. Couderc and Gaillard, \{J. M.\} and A. Hicheur and Y. Karyotakis and Lees, \{J. P.\} and V. Tisserand and A. Zghiche and A. Palano and A. Pompili and Chen, \{J. C.\} and Qi, \{N. D.\} and G. Rong and P. Wang and Zhu, \{Y. S.\} and G. Eigen and I. Ofte and B. Stugu and Abrams, \{G. S.\} and Borgland, \{A. W.\} and Breon, \{A. B.\} and Brown, \{D. N.\} and J. Button-Shafer and Cahn, \{R. N.\} and E. Charles and Day, \{C. T.\} and Gill, \{M. S.\} and Gritsan, \{A. V.\} and Y. Groysman and Jacobsen, \{R. G.\} and Kadel, \{R. W.\} and J. Kadyk and Kerth, \{L. T.\} and Kolomensky, \{Yu G.\} and G. Kukartsev and C. Leclerc and Levi, \{M. E.\} and G. Lynch and Mir, \{L. M.\} and Oddone, \{P. J.\} and Orimoto, \{T. J.\} and M. Pripstein and Roe, \{N. A.\} and Ronan, \{M. T.\} and Shelkov, \{V. G.\} and D. Bernard and Ch Thiebaux and M. Verderi",

year = "2004",

month = jan,

day = "1",

doi = "10.1103/PhysRevD.69.031102",

language = "English",

volume = "69",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "0556-2821",

number = "3",

}

TY - JOUR

T1 - Observation of the decay B0 → ρ+ ρ- and measurement of the branching fraction and polarization

AU - BABAR Collaboration

AU - Aubert, B.

AU - Barate, R.

AU - Boutigny, D.

AU - Couderc, F.

AU - Gaillard, J. M.

AU - Hicheur, A.

AU - Karyotakis, Y.

AU - Lees, J. P.

AU - Tisserand, V.

AU - Zghiche, A.

AU - Palano, A.

AU - Pompili, A.

AU - Chen, J. C.

AU - Qi, N. D.

AU - Rong, G.

AU - Wang, P.

AU - Zhu, Y. S.

AU - Eigen, G.

AU - Ofte, I.

AU - Stugu, B.

AU - Abrams, G. S.

AU - Borgland, A. W.

AU - Breon, A. B.

AU - Brown, D. N.

AU - Button-Shafer, J.

AU - Cahn, R. N.

AU - Charles, E.

AU - Day, C. T.

AU - Gill, M. S.

AU - Gritsan, A. V.

AU - Groysman, Y.

AU - Jacobsen, R. G.

AU - Kadel, R. W.

AU - Kadyk, J.

AU - Kerth, L. T.

AU - Kolomensky, Yu G.

AU - Kukartsev, G.

AU - Leclerc, C.

AU - Levi, M. E.

AU - Lynch, G.

AU - Mir, L. M.

AU - Oddone, P. J.

AU - Orimoto, T. J.

AU - Pripstein, M.

AU - Roe, N. A.

AU - Ronan, M. T.

AU - Shelkov, V. G.

AU - Bernard, D.

AU - Thiebaux, Ch

AU - Verderi, M.

PY - 2004/1/1

Y1 - 2004/1/1

N2 - We have observed the rare decay B0 → ρ+ ρ- in a sample of 89 million BB̄ pairs recorded with the BABAR detector. The number of observed events is 88-21 +23±9 with a significance of 5.1 standard deviations with systematic uncertainties included. The branching fraction and the longitudinal polarization are measured to be β(B0 → ρ+ ρ-) = (25-6-6 +7+5× 10-6 and ΓLΓ = 0.98-0.08 +0.02±0. 03, respectively.

AB - We have observed the rare decay B0 → ρ+ ρ- in a sample of 89 million BB̄ pairs recorded with the BABAR detector. The number of observed events is 88-21 +23±9 with a significance of 5.1 standard deviations with systematic uncertainties included. The branching fraction and the longitudinal polarization are measured to be β(B0 → ρ+ ρ-) = (25-6-6 +7+5× 10-6 and ΓLΓ = 0.98-0.08 +0.02±0. 03, respectively.

UR - https://www.scopus.com/pages/publications/4344688047

U2 - 10.1103/PhysRevD.69.031102

DO - 10.1103/PhysRevD.69.031102

M3 - Article

AN - SCOPUS:4344688047

SN - 0556-2821

VL - 69

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 3

M1 - 031102