--- UserCode/Friis/TancNote/note/introduction.tex	2010/04/22 16:28:45	1.5
+++ UserCode/Friis/TancNote/note/introduction.tex	2010/04/24 00:27:16	1.6
@@ -1,15 +1,15 @@
 High tau identification performance is important for the discovery potential of
-many potential new physics signals at the Compact Muon Solenoid (CMS).  Events
-with tau leptons are typically signal events; the Standard Model background
-rates with true tau leptons are typically the same order of magnitude as the
-expected signal rate in many searches for new physics.  The challenge of doing physics with
-taus is dominated by the rate at which objects are incorrectly tagged as taus.
-In paticular, quark and gluon jets have a significantly higher production
-cross-section and events where these objects are incorrectly identified as tau
-leptons can dominate the backgrounds of searches for new physics using taus.
-Efficient identification of hadronic tau decays and and low misidentification
-rate for quarks and gluons is thus essential to maximize the significance of
-searches for new physics at CMS.
+many possible new physics signals at the Compact Muon Solenoid (CMS).  The
+Standard Model background rates from true tau leptons are typically the same
+order of magnitude as the expected signal rate in many searches for new
+physics.  The challenge of doing physics with taus is driven by the rate at
+which objects are incorrectly tagged as taus.  In paticular, quark and gluon
+jets have a significantly higher production cross-section and events where
+these objects are incorrectly identified as tau leptons can dominate the
+backgrounds of searches for new physics using taus.  Efficient identification
+of hadronic tau decays and and low misidentification rate for quarks and gluons
+is thus essential to maximize the significance of searches for new physics at
+CMS.
 
 New physics signals may be discovered through tau lepton hadronic decay channels
 in early CMS data.  The tau lepton plays a paticularly important role in
