Statistics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..aprh14012m&link_type=abstract
American Physical Society, April Meeting, April 28 - May 1, 2001 Washington, DC Bulletin of the American Physical Society, Vol.
Statistics
Scientific paper
High energy collisions of cosmic ray particles with interstellar gas are believed to be the mechanism producing the majority of cosmic ray antiprotons. Due to the kinematics of the process they are created with a nonzero momentum providing a low energy "window" where exotic signals from the annihilation of supersymmetric particles (WIMPs) and primordial black hole evaporation could be found. Recently new data with large statistics on both low and high energy antiproton flux have become available, and the possibility to launch a probe to measure low energy particles in interstellar space is being discussed. It is therefore important to make a precise calculation of the "background", the flux of cosmic ray secondary antiprotons. We use our 3D Galactic cosmic ray propagation code (GALPROP) to make a new accurate calculation of the antiproton flux resulting from interactions of cosmic ray particles with interstellar matter. We use a steady-state drift model for heliospheric modulation and for comparison with the antiproton flux measurements made during the most recent solar minimum.
Moskalenko Igor V.
Ormes Jonathan F.
Potgieter Marius S.
Strong Andrew W.
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