Propagation of supersymmetric charged sleptons at high energies

Details Propagation of supersymmetric charged sleptons at high energies Propagation of supersymmetric charged sleptons at high energies

2005-03-03

arxiv.org/abs/hep-ph/0503030v2

Astropart.Phys. 24 (2005) 107-115

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 8 figures, version accepted for publication in Astroparticle Physics

Scientific paper

10.1016/j.astropartphys.2005.06.

The potential for neutrino telescopes to discover charged stau production in neutrino-nucleon interactions in Earth depends in part on the stau lifetime and range. In some supersymmetric scenarios, the next lightest supersymmetric particle is a stau with a decay length on the scale of 10 km. We evaluate the electromagnetic energy loss as a function of energy and stau mass. The energy loss parameter $\beta$ scales as the inverse stau mass for the dominating electromagnetic processes, photonuclear and $e^+e^-$ pair production. The range can be parameterized as a function of stau mass, initial energy and minimum final energy. In comparison to earlier estimates of the stau range, our results are as much as a factor of two larger, improving the potential for stau discovery in neutrino telescopes.

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