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arXiv 0710.5124hep-ex
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LHC b中Bs衰变的含时CP不对称性

Time-dependent CP asymmetries in Bs decays at LHCb

LHCb collaboration, Johan Blouw

摘要:

LHCb实验将在Bs混合中寻找新物理。在由b -> ccbar的夸克能级跃迁控制的排他Bs衰变中,从含时CP不对称性的测量中提取Bs混合相。大型新物理效应可以通过LHC第一次物理运行期间收集的数据发现或排除。基于LHCb探测器的蒙特卡罗模拟,2个逆fb对CP破坏参数phi_s的预期灵敏度为sigma(phi_s)= 0.022。

英文摘要:

The LHCb experiment will search for New Physics in Bs mixing. The Bs mixing phase will be extracted from the measurement of the time-dependent CP asymmetry in exclusive Bs decays governed by the b -> ccbar s quark-level transition. Large New Physics effects can be discovered or excluded with the data collected during the very first physics run of LHC. Based on Monte Carlo simulations of the LHCb detector, the expected sensitivity with 2 inverse fb on the CP-violation parameter phi_s is sigma(phi_s) = 0.022.

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