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arXiv 0910.0942hep-ex
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在LHCb上寻找B稀有衰变的新物理

Search for New Physics in B Rare Decays at LHCb

Marc-Olivier Bettler

摘要:

LHCb实验得到了每年在其相互作用区产生的10^12个b强子的支持,是研究稀有B衰变的绝佳场所。在标准模型中,禁止在采油树水平处使用变味中性电流。它们通过回路图进行,因此通过新粒子对可观测量的影响间接地对新物理学敏感。在本文中,我们介绍了三种最有前途的B稀有衰变分析物的制备研究。这些实验的目的是观测B_s到φ γ的光子偏振,测量B ^0到K* mu^+ mu^-衰变的角分布,以及寻找尚未观测到的B_s到mu^+ mu^-衰变。目前的分析策略和预期的敏感性。

英文摘要:

The LHCb experiment, bolstered up by the 10^12 b-hadrons to be produced yearly in its interaction region, is an excellent place to study rare B decays. Flavor-changing neutral currents are forbidden at tree level in the Standard Model. They proceed through loop diagrams and hence are indirectly sensitive to New Physics through the effect of new particles on observable quantities. In this paper, we present preparation studies of the three most promising B rare decay analyzes. These aim at the observation of the photon polarization in B_s to phi gamma, the measurement of the angular distribution of the B^0 to K* mu^+ mu^- decay, and the search for the yet unobserved B_s to mu^+ mu^- decay. The current analysis strategies and the expected sensitivities are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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