Measurement of the Drell-Yan Cross Section in pp Collisions at sqrt(s) = 7 TeV

TL;DR

This paper reports a measurement of the Drell-Yan differential cross section in proton-proton collisions at 7 TeV using CMS data, comparing results with theoretical models across a broad mass range.

Contribution

First measurement of the normalized Drell-Yan cross section in pp collisions at 7 TeV across 15-600 GeV mass range with detailed analysis of final state radiation effects.

Findings

Results agree with theoretical predictions

Normalized cross sections measured in full phase space and detector acceptance

Final state radiation effects identified and analyzed

Abstract

The Drell-Yan differential cross section is measured in pp collisions at sqrt(s) = 7 TeV, from a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 36 inverse picobarns. The cross section measurement, normalized to the measured cross section in the Z region, is reported for both the dimuon and dielectron channels in the dilepton invariant mass range 15-600 GeV. The normalized cross section values are quoted both in the full phase space and within the detector acceptance. The effect of final state radiation is also identified. The results are found to agree with theoretical predictions.