Title: Improved DZero W Boson Mass Determination
Link to paper if available: http://arxiv.org/abs/hep-ex/0106018 
Session of First Preference: Test of the Standard Model

LP Session: Hadron Machines

Abstract (max 1000 characters):

 We present a measurement of the W boson mass in proton-antiproton
 collisions at sqrt{s} = 1.8 TeV based on a data sample of integrated
 luminosity 82 pb^{-1} collected by the DZero detector at the Fermilab
 Tevatron. We utilize e nu events in which the electron shower is
 close to the edge of one of the 32 modules in the DZero central
 calorimeter. The electromagnetic calorimenter reponse and resolution
 in this region differs from that in the rest of the module and
 electrons in this region were not previously utilized. We determine
 the calorimeter response and resolution in this region using Z-->ee
 events.  We extract the W boson mass by fitting to the transverse
 mass and the electron and neutrino tranverse momentum
 distributions. The result is combined with previous DZero results to
 obtain an improved measurement of the W boson mass.
 
Submitted:  9 April 2001