Measurement of angular parameters from the decay B0 → K⁎0μ+μ− in proton–proton collisions at s=8TeV

By A. Sirunyan, A. Tumasyan, W. Adam, Federico Ambrogi, E. Asilar, T. Bergauer, J. Brandstetter, E. Brondolin, M. Dragicevic, J. Erö and 2,229 more. Physics Letters B, 2017

188 citations recorded by the source corpus.

Abstract Angular distributions of the decay B 0 → K ⁎ 0 μ + 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 P 1 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 P 1 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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/74cf6cb107740e9e96f54d2a24ddceab3a46db2d

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In Nuclear and High Energy Physics

Citations in the corpus

New Physics in $${\varvec{b \rightarrow s \ell ^+ \ell ^-}}$$ confronts new data on lepton universality (2019, methodology): “The first is the class of angular observables arising from the kinematic distribution of the differential decay widths that have been measured at LHCb [7–13], Belle [14], ATLAS [15] and CMS [16–18].”
Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, methodology): “The CMS sensitivity for the measurement of the P 0 5 parameter at HL-LHC is extrapolated [1099] from the CMS Run-1 results [1100] under some assumptions: effects of improvements in the analysis strategy (e.”