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Measurement of branching fractions and CP violation parameters in B -> omega K decays with first evidence of CP violation in B-0 -> omega K-s(0)
Belle Collaboration
2014
发表期刊PHYSICAL REVIEW D
卷号90期号:1
通讯作者Chobanova, V (reprint author), Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
摘要We present a measurement of the branching fractions and charge- parity-( CP-) violating parameters in B..K decays. The results are obtained from the final data sample containing 772 x 10(6) BB _ pairs collected at the.d4S_ resonance with the Belle detector at the KEKB asymmetric- energy e_e- collider. We obtain the branching fractions BdB0 0 _d4.5 0.4dstat_ 0.3dsyst_x10- 6; BdB_..K__ d6.80.4dstat_ 0.4dsyst__x10- 6 which are in agreement with their respective current world averages. For the CP- violating parameters, we obtain A.K0 S - 0.36 +/- 0.19dstat_ 0.05dsyst_; S.K0 S _0.91 0.32dstat_ 0.05dsyst_; A.K_ - 0.03 +/- 0.04dstat_ 0.01dsyst_; where A and S represent the direct and mixing- induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B_..K_; however, we obtain the first evidence of CP violation in the B0..K0 S decay channel at the level of 3.1 standard deviations.
关键词BELLE DETECTOR
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.90.012002
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000338740800002
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213739
专题实验物理中心
作者单位中国科学院高能物理研究所
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Belle Collaboration. Measurement of branching fractions and CP violation parameters in B -> omega K decays with first evidence of CP violation in B-0 -> omega K-s(0)[J]. PHYSICAL REVIEW D,2014,90(1).
APA Belle Collaboration.(2014).Measurement of branching fractions and CP violation parameters in B -> omega K decays with first evidence of CP violation in B-0 -> omega K-s(0).PHYSICAL REVIEW D,90(1).
MLA Belle Collaboration."Measurement of branching fractions and CP violation parameters in B -> omega K decays with first evidence of CP violation in B-0 -> omega K-s(0)".PHYSICAL REVIEW D 90.1(2014).
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