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- W2004190100 abstract "We discuss a paradigm in which the generation of the observed quark-antiquark asymmetry is directly related to the origin of dark matter. In particular we consider a baryon-number conserving extension of the standard model by the addition of a weak isotriplet U(1)B-charged scalar field φ. We describe a scenario in which the out-of-equilibrium decay of heavy scalar particles preferentially produces quarks over antiquarks leading to the observed asymmetry. The excess baryon-number in the quark fields is exactly compensated by a net antibaryon-number in φ-particles. We focus on the consequences for both particle physics and cosmology and show that the mass of φ is very tightly constrained: 40 GeV ⪅ mφ⪅50 GeV. We discuss accelerator signatures, the interaction of φ's with ordinary matter and implications for gf-particle detection. Finally we discuss some interesting cosmological phase transitions involving both U(1)B and the electroweak symmetry." @default.
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- W2004190100 date "1992-03-01" @default.
- W2004190100 modified "2023-09-23" @default.
- W2004190100 title "Baryogenesis, dark matter and the width of the Z" @default.
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- W2004190100 doi "https://doi.org/10.1016/0550-3213(92)90328-9" @default.
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