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Search for gluinos and squarks using like-sign dileptons in p(p)over-bar collisions at root s=1.8 TeV

Affolder, T; Akimoto, H; Akopian, A; Albrow, MG; Amaral, P; Amidei, D; Anikeev, K; ... CDF Collaboration, The; + view all (2001) Search for gluinos and squarks using like-sign dileptons in p(p)over-bar collisions at root s=1.8 TeV. Physical Review Letters , 87 (25) , Article 251803. 10.1103/PhysRevLett.87.251803. Green open access

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Abstract

We present results of the first search for like-sign dilepton (e(+/-)e(+/-),e(+/-)mu (+/-),mu (+/-)mu (+/-)) events associated with multijets and large missing energy using 106 pb(-1) of data in p (p) over bar collisions at roots = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos ((g) over tilde) and squarks; ((q) over tilde) in a constrained framework of the minimal supersymmetric standard model. At tan beta = 2 and mu = -800 GeV/c(2), we set 95% confidence level limits of M-(g) over tilde > 221 GeV/c(2) for M-(g) over tilde similar or equal to M-(q) over tilde, and M-(g) over tilde > 168 GeV/c(2) for M-(q) over tilde >> M-(g) over tilde, both with small variation as a function of mu.

Type: Article
Title: Search for gluinos and squarks using like-sign dileptons in p(p)over-bar collisions at root s=1.8 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.87.251803
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.87.251803
Language: English
Additional information: © 2001 The American Physical Society
Keywords: ALPHA-S CALCULATION, FERMILAB TEVATRON COLLIDER, PRODUCTION CROSS-SECTION, (P)OVER-BAR-P COLLISIONS, TOP-QUARK, NEUTRALINO PRODUCTION, PARTON DISTRIBUTIONS, SUPERSYMMETRY, SUPERGRAVITY, CHARGINO
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/409062
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