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

最近在LHCB上测量的B0-&gt；K*0mumu衰变的角分布与标准模型的预测在&gt；3标准偏差的水平上显示出紧张的关系。这种张力可能来自一种新的重矢量粒子，也可能来自意想不到的大强子效应。通过测量B0-和GT；K*0MUMU企鹅振幅与B0-&GT；K0*JPSI(MUMU)和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，从而证实或否定SM以外的物理存在。

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.