Measurement of angular parameters from the decay B0 to K*0 mu+ mu- in proton-proton collisions at sqrt(s) = 8 TeVстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Angular distributions of the decay B0→K∗0μ+μ− are studied using a sample of proton-proton collisions at s√= 8 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5 fb−1. An angular analysis is performed to determine the P1 and P′5 parameters, where the P′5 parameter is of particular interest because of recent measurements that indicate a potential discrepancy with the standard model predictions. Based on a sample of 1397 signal events, the P1 and P′5 parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model.