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.
Measurement of angular parameters from the decay B0 → K*0 μ + μ − in proton–proton collisions at √s=8TeV
Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Pinna Angioni, G. L.;Ravera, F.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;Rumerio, P.;
2018-01-01
Abstract
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.File | Dimensione | Formato | |
---|---|---|---|
1-s2.0-S0370269318303149-main.pdf
Accesso aperto
Tipo di file:
PDF EDITORIALE
Dimensione
944.67 kB
Formato
Adobe PDF
|
944.67 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.