A Search For Di Lepton Signatures From Minimal Low Energy Supergravity In Bar P P Collisions At Radical 1 8

A Search for Di-lepton Signatures from Minimal Low Energy Supergravity In[bar P]p Collisions At[radical] 1.8

We report on a search for supersymmetry using the DO detector. The 1994-96 data sample of[radical]s= 1:8 TeV[bar p]p collisions was analyzed for events containing two leptons (e or[mu]), two or more jets, and missing transverse energy. Assuming minimal supergravity, with free parameters m[sub 0], m[sub 1/2] and tan[beta], various thresholds were employed to optimize the search. No excess of events was observed. We present exclusion contours in the (m[sub 0], m[sub 1/2]) plane for tan[beta]= 2-6.

The Search for Di-lepton Signatures from Squarks and Gluinos in Pbar P Collisions at Square Root S

A search for Supergravity squark and gluino decays into di-leptons is presented. A novel search strategy of optimizing kinematic thresholds at each point in the three dimensional space of m[sub 0] -m[sub 1/2] -tan [beta] is employed. The model space is randomly scanned using a parameterized fast Monte Carlo. No events are observed above Standard Model background in 107.6 pb[sup -1] of Tevatron data collected by the D0 detector between 1993-96. Exclusion contours are presented in the m[sub 0] -m[sub 1/2] plane. At the 95% confidence level, a lower limit is set on the mass of gluinos of 129 GeV/c[sup 2] and on the mass of squarks of 138 GeV/c[sup 2] for all tan [beta]

The Search for Di-lepton Signatures from Squarks and Gluinos in Pp ̄collisions at [square Root of S]