Emergence of the electroweak scale through the Higgs portal

A bstract Having discovered a candidate for the final piece of the Standard Model, the Higgs boson, the question remains why its vacuum expectation value and its mass are so much smaller than the Planck scale (or any other high scale of new physics). One elegant solution was provided by Coleman and...

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Bibliographic Details
Published in:The journal of high energy physics 2013-04, Vol.2013 (4), p.1-22, Article 60
Main Authors: Englert, Christoph, Jaeckel, Joerg, Khoze, V. V., Spannowsky, Michael
Format: Article
Language:English
Subjects:
Bosons
Classical and Quantum Gravitation
Constants
Elementary Particles
Higgs bosons
High energy physics
Joining
Mathematical analysis
Phenomenology
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Scale (ratio)
String Theory
Vectors (mathematics)
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Summary:A bstract Having discovered a candidate for the final piece of the Standard Model, the Higgs boson, the question remains why its vacuum expectation value and its mass are so much smaller than the Planck scale (or any other high scale of new physics). One elegant solution was provided by Coleman and Weinberg, where all mass scales are generated from dimensionless coupling constants via dimensional transmutation. However, the original Coleman-Weinberg scenario predicts a Higgs mass which is too light ; it is parametrically suppressed compared to the mass of the vectors bosons, and hence is much lighter than the observed value. In this paper we argue that a mass scale, generated via the Coleman-Weinberg mechanism in a hidden sector and then transmitted to the Standard Model through a Higgs portal, can naturally explain the smallness of the electroweak scale compared to the UV cutoff scale, and at the same time be consistent with the observed value. We analyse the phenomenology of such a model in the context of present and future colliders and low energy measurements.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2013)060