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).

Measurement of branching fractions and mass spectra of B -> K pi pi gamma

BIANCHI, Fabrizio;GAMBA, Diego;
2007-01-01

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).
2007
98
211804
211808
B. Aubert; R. Barate; D. Boutigny; F. Couderc; Y. Karyotakis; J. P. Lees; V. Poireau; V. Tisserand; A. Zghiche; E. Grauges; A. Palano; M. Pappagallo; ...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/42941
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact