Measuring the Lifetime of Trapped Sleptons Using the General Purpose LHC Detectors
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.
Cite
@article{arxiv.1006.3293,
title = {Measuring the Lifetime of Trapped Sleptons Using the General Purpose LHC Detectors},
author = {J. L. Pinfold and L. Sibley},
journal= {arXiv preprint arXiv:1006.3293},
year = {2011}
}