Measurement of the CP-violating phase ? s in B ¯ s 0 ? J / ? p + p - decays

Measurement of the CP-violating phase ? s in B ¯ s 0 ? J / ? p + p - decays
复制标题

CP 破坏相的测量 ?

DOI:
10.1016/j.physletb.2012.06.032
复制
发表时间:
2012
期刊:
影响因子:
4.4
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

相似文献

测量衰变过程中混合诱导CP破坏的位相是探索新物理的重要内容。在这里,7421±105个信号事件从占主导地位的CP-奇数最终状态J/π π+π−中选择,这些信号事件来自LHCb探测器收集的1 fb−1 pp碰撞数据。对数据的时间相关拟合产生的值为,与标准模型期望值一致。没有发现直接违反CP的证据。
Measurement of the mixing-induced CP-violating phase ϕs in decays is of prime importance in probing new physics. Here 7421±105 signal events from the dominantly CP-odd final state J/ψπ+π− are selected in 1 fb−1 of pp collision data collected at with the LHCb detector. A time-dependent fit to the data yields a value of , consistent with the Standard Model expectation. No evidence of direct CP violation is found.