TY - JOUR
T1 - Galactic antiprotons from photinos
AU - Stecker, F. W.
AU - Rudaz, S.
AU - Walsh, T. F.
PY - 1985
Y1 - 1985
N2 - Stable photinos, the photino being the supersymmetry partner of the photon, can explain both the "missing mass" in galactic halos and the cosmic-ray antiproton spectrum up to the highest energies observed so far. This requires a photino mass around 15 GeV; significantly higher masses are cosmologically disfavored. As a consequence, the observed cosmic-ray antiproton-to-proton ratio is predicted to decrease abruptly just above the measured energy range, at E=m. If observed, this striking effect would strongly support the hypothesis that photinos make up the missing matter in our galaxy and also lead to a measurement of the photino mass from cosmic-ray data.
AB - Stable photinos, the photino being the supersymmetry partner of the photon, can explain both the "missing mass" in galactic halos and the cosmic-ray antiproton spectrum up to the highest energies observed so far. This requires a photino mass around 15 GeV; significantly higher masses are cosmologically disfavored. As a consequence, the observed cosmic-ray antiproton-to-proton ratio is predicted to decrease abruptly just above the measured energy range, at E=m. If observed, this striking effect would strongly support the hypothesis that photinos make up the missing matter in our galaxy and also lead to a measurement of the photino mass from cosmic-ray data.
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U2 - 10.1103/PhysRevLett.55.2622
DO - 10.1103/PhysRevLett.55.2622
M3 - Article
AN - SCOPUS:4243808194
SN - 0031-9007
VL - 55
SP - 2622
EP - 2625
JO - Physical review letters
JF - Physical review letters
IS - 23
ER -