Light stop NLSPs at the Tevatron and LHC

Yevgeny Kats; David Shih

doi:https://doi.org/10.1007/JHEP08(2011)049

Light stop NLSPs at the Tevatron and LHC

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

Abstract

How light can the stop be given current experimental constraints? Can it still be lighter than the top? In this paper, we study this and related questions in the context of gauge-mediated supersymmetry breaking, where a stop NLSP decays into a W, b and gravitino. Focusing on the case of prompt decays, we simulate several existing Tevatron and LHC analyses that would be sensitive to this scenario, and find that they allow the stop to be as light as 150GeV, mostly due to the large top production background. With more data, the existing LHC analyses will be able to push the limit up to at least 180GeV. We hope this work will motivate more dedicated experimental searches for this simple scenario, in which, for most purposes, the only free parameters are the stop mass and lifetime.

Original language	American English
Article number	49
Journal	Journal of High Energy Physics
Volume	2011
Issue number	8
DOIs	https://doi.org/10.1007/JHEP08(2011)049
State	Published - 1 Jan 2011
Externally published	Yes

Keywords

Supersymmetry phenomenology

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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https://doi.org/10.1007/JHEP08(2011)049

Cite this

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abstract = "How light can the stop be given current experimental constraints? Can it still be lighter than the top? In this paper, we study this and related questions in the context of gauge-mediated supersymmetry breaking, where a stop NLSP decays into a W, b and gravitino. Focusing on the case of prompt decays, we simulate several existing Tevatron and LHC analyses that would be sensitive to this scenario, and find that they allow the stop to be as light as 150GeV, mostly due to the large top production background. With more data, the existing LHC analyses will be able to push the limit up to at least 180GeV. We hope this work will motivate more dedicated experimental searches for this simple scenario, in which, for most purposes, the only free parameters are the stop mass and lifetime.",

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AB - How light can the stop be given current experimental constraints? Can it still be lighter than the top? In this paper, we study this and related questions in the context of gauge-mediated supersymmetry breaking, where a stop NLSP decays into a W, b and gravitino. Focusing on the case of prompt decays, we simulate several existing Tevatron and LHC analyses that would be sensitive to this scenario, and find that they allow the stop to be as light as 150GeV, mostly due to the large top production background. With more data, the existing LHC analyses will be able to push the limit up to at least 180GeV. We hope this work will motivate more dedicated experimental searches for this simple scenario, in which, for most purposes, the only free parameters are the stop mass and lifetime.

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Light stop NLSPs at the Tevatron and LHC

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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