Measurement of C P violation parameters in B 0 ? D K * 0 decays

Measurement of C P violation parameters in B 0 ? D K * 0 decays
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B 0 中C P 违规参数的测量?

DOI:
10.1103/physrevd.90.112002
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发表时间:
2014
期刊:
影响因子:
5
通讯作者:
Aaij R
Aaij R
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aaij R

文献摘要

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提出了衰变分析,其中 表示 和 介子的混合物,以四种不同的最终状态重建:、、和。数据样本对应于 LHCb 实验收集的质子-质子碰撞。对多个可观察量进行测量,包括不对称性。提出了最精确的确定,即在质量周围的质量区域中,对于大于0.4的螺旋角余弦的绝对值,具有或跃迁的衰变幅度的比率的大小。
An analysis ofdecays is presented, whererepresents an admixture ofandmesons reconstructed in four separate final states:,,and. The data sample corresponds toof proton-proton collision, collected by the LHCb experiment. Measurements of several observables are performed, includingasymmetries. The most precise determination is presented of, the magnitude of the ratio of the amplitudes of the decaywith aor atransition, in amass region ofaround themass and for an absolute value of the cosine of thehelicity angle larger than 0.4.