Evidence for B+ -> K*0bar K*+

The BaBar Collaboration; Philip Clark

doi:10.1103/PhysRevD.79.051102

Evidence for B+ -> K0bar K+

The BaBar Collaboration, Philip Clark

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+ -> K*0bar K*+ with a sample of 467 +/- 5 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction Br(B+ -> K*0bar K*+) = (1.2 +/- 0.5 +/- 0.1) x 10^{-6} with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f_L = 0.75+0.16-0.26 +/- 0.03. The first error quoted is statistical and the second is systematic.

Original language	English
Journal	Physical Review D, particles, fields, gravitation, and cosmology
DOIs	https://doi.org/10.1103/PhysRevD.79.051102
Publication status	Published - 9 Jan 2009

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hep-ex

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10.1103/PhysRevD.79.051102

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title = "Evidence for B+ -> K*0bar K*+",

abstract = "We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+ -> K*0bar K*+ with a sample of 467 +/- 5 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction Br(B+ -> K*0bar K*+) = (1.2 +/- 0.5 +/- 0.1) x 10\textasciicircum{}\{-6\} with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f\_L = 0.75+0.16-0.26 +/- 0.03. The first error quoted is statistical and the second is systematic.",

keywords = "hep-ex",

author = "B. Aubert and Stephen Playfer and \{The BaBar Collaboration\} and Philip Clark",

note = "8 pages, 14 postscript figures, submitted to Phys. Rev. D. RC",

year = "2009",

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doi = "10.1103/PhysRevD.79.051102",

language = "English",

journal = "Physical Review D, particles, fields, gravitation, and cosmology",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Evidence for B+ -> K*0bar K*+

AU - Aubert, B.

AU - Playfer, Stephen

AU - The BaBar Collaboration

AU - Clark, Philip

N1 - 8 pages, 14 postscript figures, submitted to Phys. Rev. D. RC

PY - 2009/1/9

Y1 - 2009/1/9

N2 - We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+ -> K*0bar K*+ with a sample of 467 +/- 5 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction Br(B+ -> K*0bar K*+) = (1.2 +/- 0.5 +/- 0.1) x 10^{-6} with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f_L = 0.75+0.16-0.26 +/- 0.03. The first error quoted is statistical and the second is systematic.

AB - We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+ -> K*0bar K*+ with a sample of 467 +/- 5 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction Br(B+ -> K*0bar K*+) = (1.2 +/- 0.5 +/- 0.1) x 10^{-6} with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f_L = 0.75+0.16-0.26 +/- 0.03. The first error quoted is statistical and the second is systematic.

KW - hep-ex

UR - https://www.scopus.com/pages/publications/64349093425

U2 - 10.1103/PhysRevD.79.051102

DO - 10.1103/PhysRevD.79.051102

M3 - Article

JO - Physical Review D, particles, fields, gravitation, and cosmology

JF - Physical Review D, particles, fields, gravitation, and cosmology

ER -

Evidence for B+ -> K0bar K+

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