Decay of Super-Heavy particles: User guide of the SHdecay program

Abstract

I give here a detailed user guide for the C++ program SHdecay, which has been developed for computing the final spectra of stable particles (protons, photons, LSPs, electrons, neutrinos of the three species and their antiparticles) arising from the decay of a super-heavy X particle. It allows to compute in great detail the complete decay cascade for any given decay mode into particles of the Minimal Supersymmetric Standard Model (MSSM). In particular, it takes into account all interactions of the MSSM during the perturbative cascade (including not only QCD, but also the electroweak and 3rd generation Yukawa interactions), and includes a detailed treatment of the SUSY decay cascade (for a given set of parameters) and of the non-perturbative hadronization process. All these features allow us to ensure energy conservation over the whole cascade up to a numerical accuracy of a few per mille. Yet, this program also allows to restrict the computation to QCD or SUSY-QCD frameworks. I detail the input and output files, describe the role of each part of the program, and include some advice for using it best.

34 pages, 3 figures, to be submitted in Comput. Phys. Commun

References in corpus (7)

• High-energy Neutrino Astronomy: The Cosmic Ray Connection
• Ultrahigh Energy Cosmic Rays: The state of the art before the Auger Observatory
• Thermalization after inflation and production of massive stable particles
• Production of massive stable particles in inflaton decay
• Production of ultra-energetic cosmic rays through the decay of super-heavy X particles
• Neutrinos Associated With Cosmic Rays of Top-Down Origin
• Neutralino spectrum in top-down models of UHECR

Cited by in corpus (8)

• Ultra-High-Energy Cosmic Rays
• Astrophysical Origins of Ultrahigh Energy Cosmic Rays
• Dark Matter Production in Late Time Reheating
• On the status of superheavy dark matter
• IceHEP High Energy Physics at the South Pole
• Ultra high energy cosmic rays from super-heavy dark matter in the context of large exposure observatories
• Pierre Auger Data, Photons, and Top-Down Cosmic Ray Models
• Signals of Very High Energy Neutralinos in Future Cosmic Ray Detectors