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arXiv · 1006.3293

Measuring the Lifetime of Trapped Sleptons Using the General Purpose LHC Detectors

J. L. Pinfold·L. Sibley
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Abstract

In supergravity where the gravitino is the lightest supersymmetric particle (LSP), the next-to-lightest supersymmetric particle (NLSP) decays to the gravitino with a naturally long lifetime (10^4 - 10^8). However, cosmological constraints favour charged sleptons with lifetimes below a year as the natural NLSP candidate. For this scenario we report a method to accurately determine the slepton lifetime and SUSY cross-section from observation of the decays of sleptons trapped in the material comprising the main detector (ATLAS, CMS). A measurement of the lifetime to 5% is possible after 3 years at nominal luminosity and running conditions. This method is sensitive to the cosmologically preferred stau lifetime of ~37 days and does not require the use of ancillary trapping volumes.

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J. L. Pinfold, L. Sibley. 2010-06-16. Measuring the Lifetime of Trapped Sleptons Using the General Purpose LHC Detectors. https://doi.org/10.1103/physrevd.83.035021

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