Measurement of the W boson mass using 1 fb^-1 of Dzero data from Run II

by Pierre Petroff (LAL/IN2P3)

Tuesday 5 May 2009, 16:30 → 17:30 Europe/Zurich

Main Auditorium** (CERN)

The knowledge of the W boson mass is currently the limiting factor in our ability to tighten the constraints on the mass of the Higgs boson. Improving the measurement of the W boson mass, then, is an important contribution to our understanding of the electroweak interaction, and, potentially, of how electroweak symmetry is broken. This talk will present a measurement of the W boson mass using data taken from 2002-2006 with the Dzero detector, corresponding to a total integrated luminosity of 1 fb^-1. Using the W -> e ν decay mode we measure: M_w = 80401 ± 21(stat) ± 38 (syst) MeV with a total uncertainty of 43 MeV. This agrees with the world average and is slightly more precise than any other single measurement.

Joint EP/PP seminar - 2009 http://smaria.home.cern.ch/smaria/ppep/ppep.htm

Poster EPPPSeminar05052009.pdf

Slides PP_Cern_05_05_09.pdf