NEW SIGNALS FOR GLUINOS AND SQUARKS OF SUPERGRAVITY AT THE FERMILAB TEVATRON COLLIDER

被引:32
作者
BAER, H [1 ]
KAO, C [1 ]
TATA, X [1 ]
机构
[1] UNIV HAWAII, DEPT PHYS & ASTRON, HONOLULU, HI 96822 USA
关键词
D O I
10.1103/PhysRevD.48.R2978
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Within the supergravity framework, sleptons are expected to be considerably lighter than squarks if gluinos and squarks are approximately degenerate. This can lead to a significant enhancement in leptonic branching ratio for neutralinos, and, sometimes, charginos. Using ISAJET 7.0 and/or ISASUSY 1.0, we evaluate the multilepton signals from cascade decays of gluinos and squarks produced at the Fermilab Tevatron ppBAR collider assuming squark and slepton masses are related as in supergravity models. We find observable cross sections for spectacular event topologies: m lepton + n jet + E(T)BAR events (m less-than-or-equal-to 4, n greater-than-or-equal-to 2) and same-sign dilepton + E(T)BAR events and show that the SM backgrounds to the isolated trilepton, four-lepton, and same-sign dilepton signals are very small. These signals can extend the mass reach of the Tevatron experiments to m(g) approximately 300 GeV if m(g) approximately m(q) and approximately (1000) pb-1 of data are collected,
引用
收藏
页码:R2978 / R2982
页数:5
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