2011 Accomplishments H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 1

2011 Accomplishments H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 2 m Higgs (GeV) Excluded Region < c  < 582 mm < c  < 370 mm m h (GeV)m π v (GeV) Excluded Region  c   m  c   m  c   15.8 m  c   m

2011 Accomplishments H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 3

2011 Accomplishments Triggers ◦ Basic HV triggers worked well in 2011 ◦ Atlas note written ( ATL-COM-PHYS ) ◦ Conference note, possible paper in preparation. Theory associations ◦ Lepton jet analysis - Tomer Volansky and Josh Rudermann ◦ Will be authors of PLB when published H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 4

2011 Accomplishments H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 5

2011 Accomplishments What worked in MS analysis of (H  π v π v ) – PRL paper ◦ MS vertex a powerful tool for reducing triggers from di-jet punch through ◦ Requiring two vertices in MS further (not two triggers) reduced backgrounds ◦ Data driven di-jet background studies MS vertex and trackless jet in CAL or ID in Dan Ventura’s thesis ◦ Extends exclusion range to smaller proper decay lengths H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 6

2011 Accomplishments H V Group Meeting - Planning for 2012 Cosenza 26,27 April 2012 Henry Lubatti 7