Measurement of the time-dependent CP-violating asymmetry in B(0)-->K(0)(S)pi(0)gamma decays.
We present a new measurement of CP-violation parameters in B(0)-->K(0)(S)pi(0)gamma decay based on a sample of 275 x 10(6) BB pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B(0)-->K(0)(S)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SK(0)(S)(pi(0)gamma) = -0.58(+0.46)(-0.38)(stat) +/- 0.11(syst) and AK(0)(S)(pi(0)gamma) = +0.03 +/- 0.34(stat) +/- 0.11(syst), for the K(0)(S)pi(0) invariant mass covering the full range up to 1.8 GeV/c2. We also measure the CP-violation parameters for the case B(0)-->K(*0)(-->K(0)(S)pi(0))gamma and obtain S(K(*0)gamma) = -0.79(+0.63)(-0.50)(stat) +/- 0.10(syst) for A(K(*0)gamma) fixed at 0.
Ushiroda
Y
Y
High Energy Accelerator Research Organization (KEK), Tsukuba.
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Hazumi
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Abe
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Abe
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Adachi
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Aulchenko
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Bakich
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Bedny
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Bitenc
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Bozek
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Bracko
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Brodzicka
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Chao
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Chen
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Chen
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Chuvikov
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Cole
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Dalseno
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Danilov
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Dash
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Eidelman
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Fang
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Fratina
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Gabyshev
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Gershon
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Gokhroo
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Gorisek
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Haba
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Hara
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Hastings
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Hayashii
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Higuchi
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Ishikawa
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Kinoshita
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Leder
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Lesiak
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Limosani
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Lin
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Matsumoto
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Mikami
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Mitaroff
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Miyabayashi
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Miyake
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Miyata
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Mohapatra
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Moloney
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Ohshima
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Okabe
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Okuno
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Olsen
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Ostrowicz
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Pakhlov
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Sumiyoshi
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Tamura
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Teramoto
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Tian
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Tsuboyama
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Tsukamoto
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Uehara
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Urquijo
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Varner
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Xie
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Zhang
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