Searching for a light top squark at the Fermilab Tevatron

Gregory Mahlon, G. L. Kane

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We describe a method to help the search for a light top squark [Formula presented] 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 tops squarks coming from top quark decay, making our analysis especially relevant to the [Formula presented] jets top quark sample.

Original languageEnglish (US)
Pages (from-to)2779-2791
Number of pages13
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume55
Issue number5
DOIs
StatePublished - Jan 1 1997

Fingerprint

quarks
decay

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

@article{a15ab139324c406b8fd91e7f205780a4,
title = "Searching for a light top squark at the Fermilab Tevatron",
abstract = "We describe a method to help the search for a light top squark [Formula presented] 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 tops squarks coming from top quark decay, making our analysis especially relevant to the [Formula presented] jets top quark sample.",
author = "Gregory Mahlon and Kane, {G. L.}",
year = "1997",
month = "1",
day = "1",
doi = "10.1103/PhysRevD.55.2779",
language = "English (US)",
volume = "55",
pages = "2779--2791",
journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
issn = "0556-2821",
number = "5",

}

Searching for a light top squark at the Fermilab Tevatron. / Mahlon, Gregory; Kane, G. L.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 55, No. 5, 01.01.1997, p. 2779-2791.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Searching for a light top squark at the Fermilab Tevatron

AU - Mahlon, Gregory

AU - Kane, G. L.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - We describe a method to help the search for a light top squark [Formula presented] 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 tops squarks coming from top quark decay, making our analysis especially relevant to the [Formula presented] jets top quark sample.

AB - We describe a method to help the search for a light top squark [Formula presented] 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 tops squarks coming from top quark decay, making our analysis especially relevant to the [Formula presented] jets top quark sample.

UR - http://www.scopus.com/inward/record.url?scp=0004366846&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0004366846&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.55.2779

DO - 10.1103/PhysRevD.55.2779

M3 - Article

VL - 55

SP - 2779

EP - 2791

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 0556-2821

IS - 5

ER -