Speaker
Fabrice Balli
(CEA Saclay)
Description
A precise measurement of the $W$ boson mass represents an important milestone to test the overall consistency of the Standard Model. Since the discovery of a Higgs Boson, the $W$ boson mass is predicted to 7 MeV precision, while the world average of all measurements is 15 MeV, making the improved measurement an important goal. Large samples of leptonic decays of $W$ and $Z$ bosons were collected by the ATLAS detector with efficient single lepton triggers in the 7 TeV data set corresponding to an integrated luminosity of 4.6 fb$^{-1}$. With these samples the detector and physics modelling has been studied in great detail and enabled a $W$ boson mass measurement with a precision of 19 MeV, which will be presented in this talk. Special focus will be drawn on the modeling of the production processes of $W$ bosons in proton-proton collisions, that are crucial for this measurement.
| [email protected] | |
| Collaboration name | ATLAS Collaboration |
Primary author
Fabrice Balli
(CEA Saclay)
