Measurement of CP asymmetry in a time-dependent Dalitz analysis of B0-->(rhopi)0 and a constraint on the quark mixing matrix angle phi2.
We present a measurement of CP asymmetry using a time-dependent Dalitz plot analysis of B0-->pi+pi-pi0 decays based on a 414 fb(-1) data sample containing 449 x 10(6) BB pairs. The data was collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e+ e- collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the CKM angle phi2, 68 degrees < phi2 < 95 degrees as the 68.3% confidence interval for the phi2 solution consistent with the standard model (SM). A large SM-disfavored region also remains.
Department of Physics, University of Tokyo, Tokyo.
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Kusaka
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Wang
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Ishino
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Abe
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Abe
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Adachi
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Aihara
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Anipko
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Aulchenko
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Aushev
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Chang
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Chao
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Chen
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Chistov
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Choi
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Choi
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Cole
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Dalseno
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Danilov
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Drutskoy
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Eidelman
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Fratina
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Fujikawa
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Haba
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Hayasaka
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Iijima
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Ikado
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Imoto
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Inami
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Ishikawa
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Itoh
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Iwasaki
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Iwasaki
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Kaji
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Katayama
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Kim
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Krokovny
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Kulasiri
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Lee
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Marlow
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Matsumoto
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Miyabayashi
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Miyake
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Miyazaki
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Mori
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Nakano
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Nakao
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Nakazawa
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Okuno
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Onuki
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Ozaki
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Schümann
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Schwartz
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Teramoto
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Uehara
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