Publication View

Search for the lightest chargino at \Sqrt s = 130 and 136 GeV in DELPHI (1996)

Abstract

A search for pair production of the lightest chargino at $\rs=$ 130.4 and 136.3~GeV has been carried out using the data sample corresponding to the 5.92~${\rm pb}^{-1}$ recorded by the DELPHI detector during the high energy run of LEP in the last period of 1995. The theoretical reference model has been the Mi\-ni\-mal Supersymmetric Standard Model with R-parity conservation. The three topologies expected for the decay of a pair of charginos, namely two acoplanar leptons plus missing energy (\ll), two jets and an isolated lepton plus missing energy (\jjl) and missing energy in a hadronic environment (\jj), were investigated. No evidence of a signal was found. Lower mass limits were derived for various scenarios, including the case of a low mass difference between the chargino and the neutralino and of a light sneutrino. The mass limits range between 56.3~GeV/${\rm c}^2$ and the kinematic limit.

Publication details

Download	http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ppe-96-075 http://cdsweb.cern.ch/record/305167/files/ppe-96-075.pdf http://cdsweb.cern.ch/record/305167/files/ppe-96-075.ps.gz
Repository	CERN Document Server (Switzerland)
Keywords	Particle Physics - Experimental Results
Language	eng