Supersymmetric and Kaluza-Klein Particles Multiple Scattering in the Earth

TL;DR

This paper investigates how multiple scattering of supersymmetric and Kaluza-Klein particles in the Earth can increase the separation of particle pairs in neutrino detectors, enhancing detection prospects.

Contribution

It introduces the effect of multiple scattering on pair separation of NLSPs and NLKPs, showing significant increases in detectable pair separations.

Findings

Multiple scattering can increase pair separation by up to 46%.

Vertical NLSPs experience a 24% increase in separation.

Enhanced separation improves detection likelihood in neutrino telescopes.

Abstract

Neutrino telescopes with cubic kilometer volume have the potential to discover new particles. Among them are next to lightest supersymmetric (NLSPs) and next to lightest Kaluza-Klein (NLKPs) particles. Two NLSPs or NLKPs will transverse the detector simultaneously producing parallel charged tracks. The track separation inside the detector can be a few hundred meters. As these particles might propagate a few thousand kilometers before reaching the detector, multiple scattering could enhance the pair separation at the detector. We find that the multiple scattering will alter the separation distribution enough to increase the number of NLKP pairs separated by more than 100 meters (a reasonable experimental cut) by up to 46% depending on the NLKP mass. Vertical upcoming NLSPs will have their separation increased by 24% due to multiple scattering.