Current experimental bounds on stop mass in natural SUSY

Abstract

Motivated by the recent progress of direct search for the productions of stop pair and sbottom pair at the LHC, we examine the constraints of the search results on the stop (${\tilde{t}}_1$) mass in natural SUSY. We first scan the parameter space of natural SUSY in the framework of MSSM, considering the constraints from the Higgs mass, B-physics and electroweak precision measurements. Then in the allowed parameter space we perform a Monte Carlo simulation for stop pair production followed by ${\tilde{t}}_1\to t{\tilde{\chi }}_1^0$ or ${\tilde{t}}_1\to b{\tilde{\chi }}_1^{+}$ and sbottom pair production followed by ${\tilde{b}}_1\to b{\tilde{\chi }}_1^0$ or ${\tilde{b}}_1\to t{\tilde{\chi }}_1^{-}$. Using the combined results of ATLAS with 20.1 fb${}^{-1}$ from the search of $\ell+{\rm jets}+\slashed E_{T}$, hadronic $t\bar{t}+\slashed E_{T}$ and $2b+\slashed E_{T}$, we find that a stop lighter than 600 GeV can be excluded at 95% CL in this scenario.

Discussions added, accepted by JHEP

References in corpus (10)

• PYTHIA 6.4 Physics and Manual
• SuperIso v3.0: A program for calculating flavor physics observables in 2HDM and supersymmetry
• Indirect search for dark matter with micrOMEGAs2.4
• SuperIso: A program for calculating the isospin asymmetry of B -> K* gamma in the MSSM
• Stop the Top Background of the Stop Search
• Slim SUSY
• Supersymmetry phenomenology beyond the MSSM after 5/fb of LHC data
• Top jets as a probe of degenerate stop-NLSP LSP scenario in the framework of cMSSM
• Predictions of a Natural SUSY Dark Matter Model for Direct and Indirect Detection Experiments
• Searching the sbottom in the four lepton channel at the LHC

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