Measurements of differential cross sections dσ/dφ∗ and double-differential cross sections d^2σ=dφ∗djyj for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic observable φ∗ correlates with the dilepton transverse momentum but has better resolution, and y is the dilepton rapidity. The analysis is based on data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb−1. The normalised cross section (1/σ) dσ/dφ∗, within the fiducial kinematic region, is measured with a precision of better than 0.5% for φ∗ < 1. The measurements are compared to theoretical predictions and they agree, typically, within few percent.
Measurement of differential cross sections in the kinematic angular variable ϕ * for inclusive Z boson production in pp collisions at √s=8 TeV
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.;
2018-01-01
Abstract
Measurements of differential cross sections dσ/dφ∗ and double-differential cross sections d^2σ=dφ∗djyj for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic observable φ∗ correlates with the dilepton transverse momentum but has better resolution, and y is the dilepton rapidity. The analysis is based on data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb−1. The normalised cross section (1/σ) dσ/dφ∗, within the fiducial kinematic region, is measured with a precision of better than 0.5% for φ∗ < 1. The measurements are compared to theoretical predictions and they agree, typically, within few percent.File | Dimensione | Formato | |
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