Determining the phase difference between dimuon resonant and non resonant B0->K*0mumu amplitudes

确定 dimuon 谐振和非谐振 B0->K*0mumu 幅度之间的相位差

• 批准号: 1646963
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1646963
• 关键词: Determining; phase; difference; between; dimuon

Recent measurements of the angular distribution of B0->K*0mumu decays at LHCb exhibit a tension with Standard Model predictionsat the level of >3 standard deviations. This tension could arise either from a new heavy vector particle or from unexpectedly largehadronic effects. By measuring the phase difference between the B0->K*0mumu penguin amplitudes and the amplitude of B0->K0*Jpsi(mumu)and other resonant amplitudes, we can measure the size of these potential hadronic contributions, thus confirming or refuting the existence of physics beyond the SM.

最近在LHCb上对B 0->K* 0 mumu衰变角分布的测量显示出与标准模型预测在>3个标准偏差的水平上的张力。这种张力可能来自新的重矢量粒子，也可能来自出乎意料的大强子效应。通过测量B 0->K* 0 mumu企鹅振幅与B 0-> K 0 *Jpsi（mumu）振幅及其他共振振幅之间的相位差，我们可以测量这些潜在强子贡献的大小，从而证实或反驳SM之外物理的存在。