Gamma Ray Burst as Sources of Exotic Particles

TL;DR

This paper investigates the potential of gamma-ray bursts to produce stable Kaluza-Klein particles, suggesting GRBs could be significant sources of exotic particles like the LKP, with implications for astrophysics and particle physics.

Contribution

It provides the first detailed numerical analysis of KK excitation production in GRB outflows, linking high-energy astrophysical phenomena with exotic particle generation.

Findings

GRBs can produce KK excitations at energies above 10^14 eV

KK excitations can occur up to 10^12 cm from the GRB center

GRBs may be significant sources of the lightest KK particles

Abstract

We consider the possible production of stable lightest first level KK particle (LKP) in baryonic gamma ray bursts (GRB) out flows. We numerically computed the energy-dependent cross-sections of Kaluza-Klein (KK) excitations for the Standard Model gauge bosons, photon and Z. Next, we determined the feasibility of producing these KK excitations in gamma-ray emitting regions of GRBs. We found that a GRB fireball that accelerates baryons to energies greater than 10^14 eV could produce KK excitations out to approximately 10^12 cm from the central engine, indicating that GRBs may be a significant source of the LKP. Finally, we explore the potential observational consequences of our results.