TY - JOUR
T1 - Local flux of low-energy antiprotons from evaporating primordial black holes
AU - Maki, K.
AU - Mitsui, T.
AU - Orito, S.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1996/5/6
Y1 - 1996/5/6
N2 - We investigate low-energy cosmic-ray antiprotons (p¯’s) arising from the fragmentation of quarks and gluons emitted from evaporating primordial black holes (PBHs). To calculate the local interstellar flux of these p¯’s, their propagation in the Galaxy is described by a 3D Monte Carlo simulation based on the diffusion model. This flux is used with recent observations to derive new upper limits on (i) the local PBH explosion rate R < 1.7 × 10−2pc−3yr−1,(ii) the fraction of the Universe’s mass going into PBHs with particular mass, and (iii) the average density of PBHs in the Universe.
AB - We investigate low-energy cosmic-ray antiprotons (p¯’s) arising from the fragmentation of quarks and gluons emitted from evaporating primordial black holes (PBHs). To calculate the local interstellar flux of these p¯’s, their propagation in the Galaxy is described by a 3D Monte Carlo simulation based on the diffusion model. This flux is used with recent observations to derive new upper limits on (i) the local PBH explosion rate R < 1.7 × 10−2pc−3yr−1,(ii) the fraction of the Universe’s mass going into PBHs with particular mass, and (iii) the average density of PBHs in the Universe.
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U2 - 10.1103/PhysRevLett.76.3474
DO - 10.1103/PhysRevLett.76.3474
M3 - Article
AN - SCOPUS:0001363784
VL - 76
SP - 3474
EP - 3477
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 19
ER -