Study of Wgamma events at the CMS with 7 TeV LHC data

TL;DR

This paper measures the Wgamma production cross section at 7 TeV using CMS data, comparing results with standard model predictions to test for potential new physics via anomalous gauge couplings.

Contribution

First measurement of Wgamma cross section at 7 TeV with CMS, providing data to test standard model predictions and probe new physics.

Findings

Measured Wgamma cross section consistent with standard model

Set limits on anomalous triple-gauge couplings

Demonstrated sensitivity of Wgamma production to new physics

Abstract

The measurement of the inclusive cross section for Wgamma production is presented based on 36/ pb of data acquired with the CMS detector from 7 TeV LHC collisions in 2010. Comparisons are made with the predictions of the standard model. The W bosons are identified through their leptonic decays to electrons and muons. The Wgamma cross section is sensitive to anomalous triple-gauge couplings and hence this measurement probes physics beyond the standard model.