We present results of a search for anomalous production of events containing a charged lepton (l, either e or mu) and a photon (gamma), both with high transverse momentum, accompanied by additional signatures X, including missing transverse energy (MET) and additional leptons and photons. We use the same selection criteria as in a previous CDF search but with a substantially larger data set, 305 pb(-1), a p (p) over bar collision energy of 1.96 TeV, and the CDF II detector. We find 42 l gamma MET events versus an expectation of 37.3 +/- 5.4 events. We observe 31 ll gamma+X events versus an expectation of 23.0 +/- 2.7 events. We find no events similar to the run I e e gamma gamma MET event.
Search for new physics in lepton plus photon plus X events with 305 pb(-1) of p(p)over-bar collisions at root s=1.96 TeV
CIOCCI, MARIA AGNESE;DONATI, SIMONE;
2006-01-01
Abstract
We present results of a search for anomalous production of events containing a charged lepton (l, either e or mu) and a photon (gamma), both with high transverse momentum, accompanied by additional signatures X, including missing transverse energy (MET) and additional leptons and photons. We use the same selection criteria as in a previous CDF search but with a substantially larger data set, 305 pb(-1), a p (p) over bar collision energy of 1.96 TeV, and the CDF II detector. We find 42 l gamma MET events versus an expectation of 37.3 +/- 5.4 events. We observe 31 ll gamma+X events versus an expectation of 23.0 +/- 2.7 events. We find no events similar to the run I e e gamma gamma MET event.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.