Supersymmetry reach of an upgraded Fermilab Tevatron collider
- Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822 (United States)
We examine the capability of a {radical}{ital s} =2 TeV Fermilab Tevatron {ital p{bar p}} collider to discover supersymmetry, given a luminosity upgrade to amass 25 fb{sup {minus}1} of data. We compare with the corresponding reach of the Tevatron main injector (1 fb{sup {minus}1} of data). Working within the framework of minimal supergravity with gauge coupling unification and radiative electroweak symmetry breaking, we first calculate the regions of parameter space accessible via the clean trilepton signal from {ital {tilde W}}{sub 1}{ital {tilde Z}}{sub 2}{r_arrow}3{ital l}+{ital @};sE{sub {ital T}} production, with detailed event generation of both signal and major physics backgrounds. The trilepton signal can allow equivalent gluino masses of up to {ital m}{sub {ital {tilde g}}}{similar_to}600--700 GeV to be probed if {ital m}{sub 0} is small. If {ital m}{sub 0} is large, then {ital m}{sub {ital {tilde g}}}{similar_to}500 GeV can be probed for {mu}{lt}0; however, for {mu}{gt}0 and large values of {ital m}{sub 0}, the rate for {ital {tilde Z}}{sub 2}{r_arrow}{ital {tilde Z}}{sub 1}{ital l{bar l}} is suppressed by interference effects, and there is {ital no} reach in this channel. We also examine regions where the signal from {ital {tilde W}}{sub 1}{ital {tilde W}}{bar @}d1{r_arrow}{ital l{bar l}}+{ital @};sE{sub {ital T}} is detectable. Although this signal is background limited, it is observable in some regions where the clean trilepton signal is too small. Finally, the signal {ital {tilde W}}{sub 1}{ital {tilde Z}}{sub 2}{r_arrow}jets+{ital l{bar l}}+{ital @};sE{sub {ital T}} can confirm the clean trilepton signal in a substantial subset of the parameter space where the trilepton signal can be seen.
- DOE Contract Number:
- FG05-87ER40319; FG03-94ER40833; FG02-91ER40685
- OSTI ID:
- 76528
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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