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We analyze the decay B-0-> K(S)(0)pi(+)pi(-) using a sample of 232x10(6) Upsilon(4S)-> B < overline > B </overline > decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. A maximum likelihood fit finds the following branching fractions: B(B-0-> K(0)pi(+)pi(-))=(43.0 +/- 2.3 +/- 2.3)x10(-6), B(B-0-> f(0)(->pi(+)pi(-))K-0)=(5.5 +/- 0.7 +/- 0.5 +/- 0.3)x10(-6) and B(B-0-> K(*+)pi) =(11.0 +/- 1.5 +/- 0.5 +/- 0.5)x10(-6). For these results, the first uncertainty is statistical, the second is systematic, and the third (if present) is due to the effect of interference from other resonances. We also measure the CP-violating charge asymmetry in the decay B-0-> K(*+)pi(-), A(K)(*)pi=-0.11 +/- 0.14 +/- 0.05.

Measurements of neutral B decay branching fractions to K-S(0)pi(+)pi(-) final states and the charge asymmetry of B-0 -> K*+pi(-) RID C-2728-2008 RID C-5223-2009 RID C-5719-2008 RID D-1055-2009

ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;CALDERINI, GIOVANNI;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2006-01-01

Abstract

We analyze the decay B-0-> K(S)(0)pi(+)pi(-) using a sample of 232x10(6) Upsilon(4S)-> B < overline > B decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. A maximum likelihood fit finds the following branching fractions: B(B-0-> K(0)pi(+)pi(-))=(43.0 +/- 2.3 +/- 2.3)x10(-6), B(B-0-> f(0)(->pi(+)pi(-))K-0)=(5.5 +/- 0.7 +/- 0.5 +/- 0.3)x10(-6) and B(B-0-> K(*+)pi) =(11.0 +/- 1.5 +/- 0.5 +/- 0.5)x10(-6). For these results, the first uncertainty is statistical, the second is systematic, and the third (if present) is due to the effect of interference from other resonances. We also measure the CP-violating charge asymmetry in the decay B-0-> K(*+)pi(-), A(K)(*)pi=-0.11 +/- 0.14 +/- 0.05.
2006
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/181155
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