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

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Published: 2000

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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]

Search for Squarks and Gluinos Using Dileptons
Search for Squarks and Gluinos Using Dileptons

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Published: 1996

Total Pages: 8

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Gluinos and squarks can be produced in {ital p{anti p}} collisions at (square root)s = 1.8 TeV and decay via charginos and neutralinos to final states containing two (or more) leptons. There is no charge correlation between the leptons of charginos from gluino decays as gluinos are Majorana particles. The strategy of this analysis is to search for an excess of events containing two like-sign isolated leptons, missing energy, and jets. The analysis is based on 81 pb−1 of 1994-5 data recorded at CDF.

Search for Squarks and Gluinos with the D-Zero Detector
Search for Squarks and Gluinos with the D-Zero Detector

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Published: 1997

Total Pages: 11

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We report on a search for squarks and gluinos in p{anti p} collisions at (square root) s= 1.8 TeV using the D0 detector at Fermilab. Data corresponding to 79.2 " 4.2 pb−1 were examined for events with large missing transverse energy, three or more jets, and the absence of isolated leptons. No events were observed significantly in excess of Standard Model background predictions, and we place limits on the Minimal Supergravity parameters M0 and M12.

Search for Squarks and Gluinos in
Search for Squarks and Gluinos in

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Published: 1994

Total Pages: 5

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Based on 7.1 pb−1 of single interaction event data collected by the DO Detector at Fermilab during the 1992--1993 p{bar p} collider run at (square root)s = 1.8 TeV, results are presented of a search for supersymmetric partners of the quark and gluon, the squark and gluino, using missing E{sub T} and jets as the signature. Limits are set on the squark and gluino masses in the context of the Minimal Supersymmetric Standard Model including the effect of cascade decays of the squark and gluino.