Resonant slepton production at the LHC in models with an ultralight gravitino

B. C. Allanach; Manoranjan Guchait; K. Sridhar

doi:10.1016/j.physletb.2004.02.049

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arXiv · hep-ph/0311254

Resonant slepton production at the LHC in models with an ultralight gravitino

B. C. Allanach·Manoranjan Guchait·K. Sridhar

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Abstract

We examine resonant slepton production at the LHC with gravitinos in the final state. The slepton undergoes gauge decay into a neutralino and a lepton, the neutralino decays into a photon and a gravitino. By measuring the transverse masses of the gamma- G and the l-gamma- G subsystems it is possible to accurately reconstruct both the slepton and neutralino masses. In some regions of parameter space the slepton decays directly into a lepton and gravitino, giving an identical experimental topology to W production (l missing E_T). We present the novel matrix element squared for lepton-gravitino production. A peak in the tail of the lepton-missing momentum transverse mass distribution of the W provides a signature for the process and an accurate measurement of the slepton mass. We display the search reach for the LHC and 300 fb^{-1} of integrated luminosity.

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B. C. Allanach, Manoranjan Guchait, K. Sridhar. 2004-03-12. Resonant slepton production at the LHC in models with an ultralight gravitino. https://doi.org/10.1016/j.physletb.2004.02.049

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