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

Physics

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44 Scopus citations

Abstract

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.

Original language	English (US)
Article number	031102
Journal	Physical Review D
Volume	69
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.69.031102
State	Published - 2004

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevD.69.031102

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@article{ae6f5afacad84756bdaaa4bef41fa312,

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 Lange, \{D. J.\} and P. Elmer and J. Olsen",

year = "2004",

doi = "10.1103/PhysRevD.69.031102",

language = "English (US)",

volume = "69",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Institute of Physics",

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 - Lange, D. J.

AU - Elmer, P.

AU - Olsen, J.

PY - 2004

Y1 - 2004

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

UR - https://www.scopus.com/pages/publications/4344688047#tab=citedBy

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

JF - Physical Review D

IS - 3

M1 - 031102

ER -

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

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