Angular distributions of the decay B0→K⁎0μ+μ− are studied using a sample of proton–proton collisions at s=8TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5fb−1. An angular analysis is performed to determine the P1 and P5′ parameters, where the P5′ 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 P5′ parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Measurement of angular parameters from the decay B0 → K⁎0μ+μ− in proton–proton collisions at s=8TeV. PHYSICS LETTERS. SECTION B, 781, 517-541 [10.1016/j.physletb.2018.04.030].

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

Benaglia A.;Dinardo M. E.;Ghezzi A.;Govoni P.;Malberti M.;Moroni L.;Paganoni M.;Tabarelli de Fatis T.;Lucchini M. T.;Gerosa R.;Massironi A.;De Guio F.;
2018

Abstract

Angular distributions of the decay B0→K⁎0μ+μ− are studied using a sample of proton–proton collisions at s=8TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5fb−1. An angular analysis is performed to determine the P1 and P5′ parameters, where the P5′ 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 P5′ parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model.
Articolo in rivista - Articolo scientifico
B; 0; decays; CMS; Physics;
B; 0; decays; CMS; Physics
English
2018
781
517
541
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Measurement of angular parameters from the decay B0 → K⁎0μ+μ− in proton–proton collisions at s=8TeV. PHYSICS LETTERS. SECTION B, 781, 517-541 [10.1016/j.physletb.2018.04.030].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/270134
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