Abid Patwa, BNL 
March 8 2007
Title: Tau Identification and Physics with Taus at DZero, Fermilab.

Abstract:

The DZero Experiment is one of two large collider detectors located at 
the Fermi National Accelerator Laboratory near Chicago, Illinois.   The 
detector has been designed to efficiently identify leptons and jets, 
including the tau lepton.   Due to its large mass at 1.78 GeV, the tau 
decays prior to reaching any detector and distinguishing them from 
different backgrounds requires effective identification algorithms.  These 
include multivariate techniques such as neural networks.  Methods used to 
identify tau leptons produced in high energy ppbar collisions at the 
Tevatron are presented as well as the procedures used to discriminate 
against background particles misidentified as taus.  The discussion also 
focuses on several physics results obtained by applying these methods, 
using up to the 1/fb of integrated luminosity delivered by the Tevatron.  
In particular, measurements of tau final states from W and Z boson 
production, Higgs, and SUSY are described.