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arXiv 1209.1208hep-ex
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在LHCb寻找稀有衰变中的新物理

Search for New Physics in rare decays at LHCb

Johannes Albrecht

摘要:

罕见的重味衰变为粒子物理学的标准模型提供了严格的测试,并允许测试可能的新物理场景。欧洲核子研究中心的LHCb实验是进行这些搜索的理想场所,因为它记录了世界上最大的美介子样本。回顾了2011年LHCb实验收集到的$\sqrt s = 7\tev $的1 \invfb和$pp$ -碰撞的稀有衰变分析的现状。本文讨论了目前世界上最精确的\BdToKstmm衰变角结构测量方法,以及$\decay{B}{\kaon^{(*)} \mup\mun}$衰变中的同位旋不对称性测量。最严格的排斥上限的分支分数的\Bsmm衰变,以及轻子数和轻子味违反过程的搜索。

英文摘要:

Rare heavy flavor decays provide stringent tests of the Standard Model of particle physics and allow to test for possible new Physics scenarios. The LHCb experiment at CERN is the ideal place for these searches as it has recorded the worlds largest sample of beauty mesons. The status of the rare decay analyses with 1\invfb of $\sqrt s = 7\tev $ of $pp$--collisions collected by the LHCb experiment in 2011 is reviewed. The worlds most precise measurements of the angular structure of \BdToKstmm decays is discussed, as well as the isospin asymmetry measurement in $\decay{B}{\kaon^{(*)} \mup\mun}$ decays. The most stringent upper exclusion limit on the branching fraction of \Bsmm decays is shown, as well as searches for lepton number and lepton flavor violating processes.

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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