Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-08-13
Phys.Rev.Lett.105:211304,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
Footnote 1 restored after omission in v2; no other corrections
Scientific paper
10.1103/PhysRevLett.105.211304
We present a novel mechanism for generating both the baryon and dark matter densities of the Universe. A new Dirac fermion X carrying a conserved baryon number charge couples to the Standard Model quarks as well as a GeV-scale hidden sector. CP-violating decays of X, produced non-thermally in low-temperature reheating, sequester antibaryon number in the hidden sector, thereby leaving a baryon excess in the visible sector. The antibaryonic hidden states are stable dark matter. A spectacular signature of this mechanism is the baryon-destroying inelastic scattering of dark matter that can annihilate baryons at appreciable rates relevant for nucleon decay searches.
Davoudiasl Hooman
Morrissey David E.
Sigurdson Kris
Tulin Sean
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