Galactic Cosmic Strings as Sources of Primary Antiprotons

Details Galactic Cosmic Strings as Sources of Primary Antiprotons Galactic Cosmic Strings as Sources of Primary Antiprotons

1996-04-01

arxiv.org/abs/astro-ph/9604007v2

Phys.Rev.D53:6711-6714,1996

Astronomy and Astrophysics

Astrophysics

11 pages; added reference to recent observations of low energy antiprotons

Scientific paper

10.1103/PhysRevD.53.R6711

A possible signature of a class of superconducting cosmic strings trapped in the Milky Way plasma is the emission of low energy antiprotons due to baryon number violating processes on the string. We find the terrestrial flux and the energy spectrum of such antiprotons. Current observational bounds on the flux of low energy antiprotons place a {\it lower} bound on the string tension which is comparable to that given by the electroweak scale.

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