Searching for a Light Stop at the Tevatron

Abstract

We describe a method to help the search for a light stop squark [M(stop) + M(LSP) < M(top)] 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 "superweight," 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 "large" for the supersymmetric signal and "small" for the standard model background. For illustration, we mainly consider the detection of stops coming from top decay, making our analysis especially relevant to the W+2 jets top sample.

45 pages, revtex, 15 figures included. Final version, as will appear in Phys. Rev. D. Contains an expanded introduction plus a few additional references

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Cited by in corpus (9)

• Stop and Sbottom Searches in Run II of the Fermilab Tevatron
• $t\to bW$ in NonCommutative Standard Model
• Stop Squark Search at Tevatron in the Light Slepton Scenario
• Top quark three-body decays in the R-parity violating MSSM
• Boosted top quarks in supersymmetric cascade decays at the LHC
• Search for the Supersymmetric Partner of the Top-Quark in $p\bar{p}$ Collisions at $\sqrt{s}=1.8\mathrm{TeV}$
• Searching for Bottom Squarks at Luminosity Upgrades of the Fermilab Tevatron
• Searching for a stop-pair sample from top counting experiments at hadron colliders
• Recognizing Superpartners at LEP