A Unified Theory of Matter Genesis: Asymmetric Freeze-In

• DOI: 10.48550/arxiv.1010.0245
• Publication Date: 2010-01-01
• Authors: Lawrence J. Hall; John March-Russell; Stephen M. West
• Keywords: Baryon asymmetry; Higgsino; Baryon number; Hidden sector; Lepton number

We propose a unified theory of dark matter (DM) genesis and baryogenesis. It explains the observed link between DM density baryon density, is fully testable by combination collider experiments precision tests. Our utilises "thermal freeze-in" mechanism production, generating particle anti-particle asymmetries in decays from visible to hidden sectors. Calculable, linked, number are produced feeble interaction mediating two sectors, while out-of-equilibrium condition necessary for baryogenesis provided different temperatures An illustrative model presented where sector MSSM, with relevant CP violation arising phases gaugino Higgsino masses, both generated at order 100 GeV. Experimental signals this can be spectacular, including: long-lived metastable states late decaying LHC; apparent baryon-number or lepton-number violating signatures associated these highly displaced vertices; EDM correlated decay lifetimes within reach planned experiments; prediction mass that sensitive spectrum nature electroweak phase transition.