We measure the time-dependent CP asymmetry in B(0)-> K(S)(0)pi(0)gamma decays for two regions of K(S)(0)-pi(0) invariant mass, m(K(S)(0)pi(0)), using the final BABAR data set of 467x10(6) B(B)overbar pairs collected at the PEP-II e(+)e(-) collider at SLAC. We find 339 +/- 24 B(0)-> K(*0)gamma candidates and measure S(K)(*)gamma=-0.03 +/- 0.29 +/- 0.03 and C(K)(*)gamma=-0.14 +/- 0.16 +/- 0.03. In the range 1.1 < m(K(S)(0)pi(0))< 1.8 GeV/c(2) we find 133 +/- 20 B(0)-> K(S)(0)pi(0)gamma candidates and measure S(KS)(0)pi(0)gamma=-0.78 +/- 0.59 +/- 0.09 and C(KS)(0)pi(0)gamma=-0.36 +/- 0.33 +/- 0.04. The uncertainties are statistical and systematic, respectively.
Measurement of time-dependent CP asymmetry in B(0)-> K(S)(0)pi(0)gamma decays RID C-5223-2009
CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2008-01-01
Abstract
We measure the time-dependent CP asymmetry in B(0)-> K(S)(0)pi(0)gamma decays for two regions of K(S)(0)-pi(0) invariant mass, m(K(S)(0)pi(0)), using the final BABAR data set of 467x10(6) B(B)overbar pairs collected at the PEP-II e(+)e(-) collider at SLAC. We find 339 +/- 24 B(0)-> K(*0)gamma candidates and measure S(K)(*)gamma=-0.03 +/- 0.29 +/- 0.03 and C(K)(*)gamma=-0.14 +/- 0.16 +/- 0.03. In the range 1.1 < m(K(S)(0)pi(0))< 1.8 GeV/c(2) we find 133 +/- 20 B(0)-> K(S)(0)pi(0)gamma candidates and measure S(KS)(0)pi(0)gamma=-0.78 +/- 0.59 +/- 0.09 and C(KS)(0)pi(0)gamma=-0.36 +/- 0.33 +/- 0.04. The uncertainties are statistical and systematic, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
