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Measurement of branching fractions and mass spectra of B→Kππγ

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Babar Collaboration (Including:

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E. et al.
). (2007) Measurement of branching fractions and mass spectra of B→Kππγ. Physical Review Letters, Vol.98 (No.21). Article: 211804. ISSN 0031-9007

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Abstract

We present a measurement of the partial branching fractions and mass spectra of the exclusive radiative penguin processes B -> K pi pi gamma in the range m(K pi pi)< 1.8 GeV/c(2). We reconstruct four final states: K+pi(-)pi(+)gamma, K+pi(-)pi(0)gamma, K-S(0)pi(-)pi(+)gamma, and K-S(0)pi(+)pi(0)gamma, where K-S(0)->pi(+)pi(-). Using 232x10(6) e(+)e(-)-> B (B) over bar events recorded by the BABAR experiment at the SLAC PEP-II asymmetric-energy storage ring, we measure the branching fractions B(B+-> K+pi(-)pi(+)gamma)=[2.95 +/- 0.13(stat)+/- 0.20(syst)]x10(-5), B(B-0 -> K+pi(-)pi(0)gamma)=[4.07 +/- 0.22(stat)+/- 0.31(syst)]x10(-5), B(B-0 -> K-0 pi(+)pi(-)gamma)=[1.85 +/- 0.21(stat)+/- 0.12(syst)]x10(-5), and B(B+-> K-0 pi(+)pi(0)gamma)=[4.56 +/- 0.42(stat)+/- 0.31(syst)]x10(-5).

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Date: 25 May 2007
Volume: Vol.98
Number: No.21
Number of Pages: 7
Page Range: Article: 211804
Identification Number: 10.1103/PhysRevLett.98.211804
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
URI: http://wrap.warwick.ac.uk/id/eprint/31974

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