Determining Spins of Metastable Sleptons at the Large Hadron Collider

Abstract

We investigate models in minimal supergravity parameter space which contain metastable sleptons. We find the luminosity required to determine the slepton spin in these scenarios, and apply our analysis to two benchmark models. We show that the spin of the slepton in one of the benchmark models can be determined with less than 30 fb${}^{-1}$ of data, while the slepton spin in the other model can be determined with roughly 40 fb${}^{-1}$ of data. We show how our analysis can be applied to other models, and give an estimate of the luminosity needed for a spin determination as a function of slepton mass. This analysis can be used to distinguish supersymmetry and extra dimensions.

10 pages,references added

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• New Measurements with Stopped Particles at the LHC
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• Spin Discrimination in Three-Body Decays
• Auto-Concealment of Supersymmetry in Extra Dimensions
• Identifying the Origin of Longevity of Metastable Stau at the LHC
• Spin and Chirality Determination of Superparticles with Long-Lived Stau at the LHC
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• Squark Mass Measurement in the Long-lived Stau Scenario at the LHC
• Gauge-mediated supersymmetry breaking with generalized messenger sector at LHC
• Effects of Anomalous Couplings on Spin Determination in Cascade Decays