Würzburg 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 11: QCD / Partonstruktur

T 11.9: Talk

Monday, March 19, 2018, 18:00–18:15, Z6 - SR 1.002

Measurement of Associated Production of W+c and Determination of the Strange-Quark Content of the Proton — •Svenja Pflitsch, Katerina Lipka, and Benoit Roland — DESY

The measurement the of W+c production cross-section provides an opportunity to directly access the strange quark content of the proton at the electroweak scale.

We focus on W → l ν and c → D^* as probes of W+c since both, W-boson and D-Meson, can be measured with good accuracy by the CMS-detector. Further the fragmentation of charm quarks into D-mesons is well measured. The data taken by the CMS-experiment at the LHC in 2016 offers sufficient statistics for an analysis of the pseudorapidity-distribution of the muon coming from the decay of the W-boson. We present the results for the inclusive and differential cross section of W+charm, as well as comparisons to theoretical predictions at Next-to-Leading order (NLO).

The results from this analysis are used as input for a QCD analysis at NLO to determine the strange-quark distribution and extract the strangeness fraction of the proton.