We present a measurement of the time-dependent CP-violating asymmetry in B-0-> K(*0)gamma decays with K-*0-> K(S)(0)pi(0) based on 232x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. In a sample containing 157 +/- 16 signal decays, we measure S(K)(*0)gamma=-0.21 +/- 0.40 +/- 0.05 and C(K)(*0)gamma=-0.40 +/- 0.23 +/- 0.03, where the first error is statistical and the second systematic. We also explore B-0-> K(S)(0)pi(0)gamma decays with 1.1 < m(KS)(0)pi(0)< 1.8 GeV/c(2) and find 59 +/- 13 signal events with S(KS)(0)pi(0)gamma=0.9 +/- 1.0 +/- 0.2 and C(KS)(0)pi(0)gamma=-1.0 +/- 0.5 +/- 0.2.

Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.p., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 72:(2005). [10.1103/physrevd.72.051103]

Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays

DEL RE, Daniele;RAHATLOU, SHAHRAM;BELLINI, Fabio;CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2005

Abstract

We present a measurement of the time-dependent CP-violating asymmetry in B-0-> K(*0)gamma decays with K-*0-> K(S)(0)pi(0) based on 232x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. In a sample containing 157 +/- 16 signal decays, we measure S(K)(*0)gamma=-0.21 +/- 0.40 +/- 0.05 and C(K)(*0)gamma=-0.40 +/- 0.23 +/- 0.03, where the first error is statistical and the second systematic. We also explore B-0-> K(S)(0)pi(0)gamma decays with 1.1 < m(KS)(0)pi(0)< 1.8 GeV/c(2) and find 59 +/- 13 signal events with S(KS)(0)pi(0)gamma=0.9 +/- 1.0 +/- 0.2 and C(KS)(0)pi(0)gamma=-1.0 +/- 0.5 +/- 0.2.
2005
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.p., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 72:(2005). [10.1103/physrevd.72.051103]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231806
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