Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s) = 7 TeV with the ATLAS detector

Cinzia Da Via; Brian Cox; Stephen Watts; Terence Wyatt; Joleen Pater; Andrew Pilkington; Darren Price; Alexander Oh

doi:10.1103/PhysRevLett.109.211802

Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s) = 7 TeV with the ATLAS detector

Cinzia Da Via, Brian Cox, Stephen Watts, Terence Wyatt, Joleen Pater, Andrew Pilkington, Darren Price, Alexander Oh

Research output: Contribution to journal › Article › peer-review

Abstract

A search for direct pair production of supersymmetric top squarks (stop_1) is presented, assuming the stop_1 decays into a top quark and the lightest supersymmetric particle, neutralino_1, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted Standard Model background of 13.5+3.7-3.6 (4.4+1.7-1.3) events in two signal regions based on int(Ldt) = 4.7 fb^-1 of pp collision data taken at sqrt(s) = 7 TeV with the ATLAS detector at the LHC. An exclusion region in the stop_1 versus neutralino_1 mass plane is evaluated: 370<m(stop_1)<465 GeV is excluded for m(neutralino_1)~0 GeV while m(stop_1)=445 GeV is excluded for m(neutralino_1)<=50 GeV.

Original language	English
Journal	Phys.Rev.Lett.
Volume	109
DOIs	https://doi.org/10.1103/PhysRevLett.109.211802 https://doi.org/10.1103/PhysRevLett.109.211802
Publication status	Published - 2012

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title = "Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s) = 7 TeV with the ATLAS detector",

abstract = "A search for direct pair production of supersymmetric top squarks (stop_1) is presented, assuming the stop_1 decays into a top quark and the lightest supersymmetric particle, neutralino_1, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted Standard Model background of 13.5+3.7-3.6 (4.4+1.7-1.3) events in two signal regions based on int(Ldt) = 4.7 fb^-1 of pp collision data taken at sqrt(s) = 7 TeV with the ATLAS detector at the LHC. An exclusion region in the stop_1 versus neutralino_1 mass plane is evaluated: 370<m(stop_1)<465 GeV is excluded for m(neutralino_1)~0 GeV while m(stop_1)=445 GeV is excluded for m(neutralino_1)<=50 GeV.",

author = "{Da Via}, Cinzia and Brian Cox and Stephen Watts and Terence Wyatt and Joleen Pater and Andrew Pilkington and Darren Price and Alexander Oh",

year = "2012",

doi = "10.1103/PhysRevLett.109.211802",

language = "English",

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journal = "Phys.Rev.Lett.",

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T1 - Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s) = 7 TeV with the ATLAS detector

AU - Da Via, Cinzia

AU - Cox, Brian

AU - Watts, Stephen

AU - Wyatt, Terence

AU - Pater, Joleen

AU - Pilkington, Andrew

AU - Price, Darren

AU - Oh, Alexander

PY - 2012

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AB - A search for direct pair production of supersymmetric top squarks (stop_1) is presented, assuming the stop_1 decays into a top quark and the lightest supersymmetric particle, neutralino_1, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted Standard Model background of 13.5+3.7-3.6 (4.4+1.7-1.3) events in two signal regions based on int(Ldt) = 4.7 fb^-1 of pp collision data taken at sqrt(s) = 7 TeV with the ATLAS detector at the LHC. An exclusion region in the stop_1 versus neutralino_1 mass plane is evaluated: 370<m(stop_1)<465 GeV is excluded for m(neutralino_1)~0 GeV while m(stop_1)=445 GeV is excluded for m(neutralino_1)<=50 GeV.

U2 - 10.1103/PhysRevLett.109.211802

DO - 10.1103/PhysRevLett.109.211802

M3 - Article

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JO - Phys.Rev.Lett.

JF - Phys.Rev.Lett.

ER -

Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s) = 7 TeV with the ATLAS detector

Abstract

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