Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gamma Ray Burst as Sources of Exotic Particles   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.

21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph