Searching for a light top squark at the Fermilab Tevatron
- Department of Physics, University of Michigan, 500 East University Avenue, Ann Arbor, Michigan 48109 (United States)
We describe a method to help the search for a light top squark ({tilde M}{sub t}+{tilde M}{sub LSP}{lt}m{sub t}) at the Fermilab Tevatron. Traditional search methods rely upon a series of stringent background-reducing cuts which, unfortunately, leave very few signal events given the present data set. To avoid this difficulty, we instead suggest using a milder set of cuts, combined with a {open_quotes}superweight,{close_quotes} whose purpose is to discriminate between signal and background events. The superweight consists of a sum of terms, each of which are either zero or one. The terms are assigned event-by-event depending upon the values of various observables. We suggest a method for choosing the observables as well as the criteria used to assign the values such that the superweight is {open_quotes}large{close_quotes} for the supersymmetric signal and {open_quotes}small{close_quotes} for the standard model background. For illustration, we mainly consider the detection of tops squarks coming from top quark decay, making our analysis especially relevant to the W+2 jets top quark sample. {copyright} {ital 1997} {ital The American Physical Society}
- DOE Contract Number:
- FG02-95ER40899
- OSTI ID:
- 467528
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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