Basic Philosophy of SUSY Photons+MET Selection Bruce Schumm, SCIPP/UCSC SUSY 2011 Data Workshop 17 March 2011 n.b.: We are becoming a general photon + MET signature study, merged with the exotics effort. Probably no impact on the following though…

Bino-Like Neutralino Grid No visible jet activity when M g ~ M  Desecrated plot thanks to Shih/Ruderman, ArXiv Tevatron Limit So far, focus on Bino-like  0 case with B(  0   g ~ )  75% (will generalize later); for now  2  + MET signature In order to be sensitive to full parameter space (esp m g~  m B ), do not require hadronic activity. Tevatron limit on  0 mass sets lower limit on MET/E T  scale, relatively independent of M g~ ; optimize near limits (see next slides)

p T of photons M bino = 150 – 580 GeV M gluino = 600GeV (  = 0.26pb ) M bino = 200 GeV M gluino=400–700GeV (  =6–0.07 pb) BR doesn’t change ~ 80% p T of photons ~ similar BR changes vs. M bino: 90% (M bino = 150GeV) 65% (M bino = 580GeV) p T of photons! Photon p T can be soft for M  small