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Title: Hierarchy from baryogenesis

Abstract

We study a recently proposed mechanism to solve the hierarchy problem in the context of the landscape, where the solution of the hierarchy problem is connected to the requirement of having baryons in our Universe via electroweak baryogenesis. The phase transition is triggered by the fermion condensation of a new gauge sector which becomes strong at a scale {lambda} determined by dimensional transmutation, and it is mediated to the standard model by a new singlet field. In a 'friendly' neighborhood of the landscape, where only the relevant operators are ''scanned'' among the vacua, baryogenesis is effective only if the Higgs mass m{sub h} is comparable to this low scale {lambda}, forcing m{sub h}{approx}{lambda}, and solving the hierarchy problem. A new CP violating phase is needed coupling the new singlet and the Higgs field to new matter fields. We study the constraints on this model given by baryogenesis and by the electron electric dipole moment (EDM), and we briefly comment on gauge coupling unification and on dark matter relic abundance. We find that next generation experiments on the EDM will be sensitive to essentially the entire viable region of the parameter space, so that absence of a signal would effectively rulemore » out the model.« less

Authors:
 [1]
  1. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
20776730
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.73.043513; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ABUNDANCE; BARYONS; COSMOLOGY; COUPLING; CP INVARIANCE; ELECTRIC DIPOLE MOMENTS; ELECTRONS; HIGGS BOSONS; HIGGS MODEL; MATHEMATICAL SOLUTIONS; NONLUMINOUS MATTER; PHASE TRANSFORMATIONS; REST MASS; STANDARD MODEL; UNIVERSE

Citation Formats

Senatore, Leonardo. Hierarchy from baryogenesis. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.043513.
Senatore, Leonardo. Hierarchy from baryogenesis. United States. doi:10.1103/PhysRevD.73.043513.
Senatore, Leonardo. Wed . "Hierarchy from baryogenesis". United States. doi:10.1103/PhysRevD.73.043513.
@article{osti_20776730,
title = {Hierarchy from baryogenesis},
author = {Senatore, Leonardo},
abstractNote = {We study a recently proposed mechanism to solve the hierarchy problem in the context of the landscape, where the solution of the hierarchy problem is connected to the requirement of having baryons in our Universe via electroweak baryogenesis. The phase transition is triggered by the fermion condensation of a new gauge sector which becomes strong at a scale {lambda} determined by dimensional transmutation, and it is mediated to the standard model by a new singlet field. In a 'friendly' neighborhood of the landscape, where only the relevant operators are ''scanned'' among the vacua, baryogenesis is effective only if the Higgs mass m{sub h} is comparable to this low scale {lambda}, forcing m{sub h}{approx}{lambda}, and solving the hierarchy problem. A new CP violating phase is needed coupling the new singlet and the Higgs field to new matter fields. We study the constraints on this model given by baryogenesis and by the electron electric dipole moment (EDM), and we briefly comment on gauge coupling unification and on dark matter relic abundance. We find that next generation experiments on the EDM will be sensitive to essentially the entire viable region of the parameter space, so that absence of a signal would effectively rule out the model.},
doi = {10.1103/PhysRevD.73.043513},
journal = {Physical Review. D, Particles Fields},
number = 4,
volume = 73,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2006},
month = {Wed Feb 15 00:00:00 EST 2006}
}
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