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  Electroweak and Conformal Symmetry Breaking by a Strongly Coupled Hidden Sector

Holthausen, M., Kubo, J., Lim, K. S., & Lindner, M. (2013). Electroweak and Conformal Symmetry Breaking by a Strongly Coupled Hidden Sector. Journal of high energy physics: JHEP, 2013(12): 076. doi:10.1007/JHEP12(2013)076.

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1310.4423.pdf (Preprint), 4MB
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 Creators:
Holthausen, Martin1, Author           
Kubo, Jisuke2, Author
Lim, Kher Sham1, Author           
Lindner, Manfred1, Author           
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              
2Institute for Theoretical Physics, Kanazawa University, Kanazawa, 920-1192, Japan, ou_persistent22              

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Free keywords: High Energy Physics - Phenomenology, hep-ph,High Energy Physics - Theory, hep-th
 Abstract: The LHC and other experiments show so far no sign of new physics and long-held beliefs about naturalness should be critically reexamined. We discuss therefore in this paper a model with a combined breaking of conformal and electroweak symmetry by a strongly coupled hidden sector. Even though the conformal symmetry is anomalous, this may still provide an explanation of the smallness of electroweak scale compared to the Planck scale. Specifically we start from a classically conformal model, in which a strongly coupled hidden sector undergoes spontaneous chiral symmetry breaking. A coupling via a real scalar field transmits the breaking scale to the Standard Model Higgs and triggers electroweak symmetry breaking. The model contains dark matter candidates in the form of dark pions, whose stability is being guaranteed by the flavor symmetry of hidden quark sector. We study its relic abundance and direct detection prospects with the Nambu-Jona-Lasinio method and discuss the phase transition in the dark sector as well as in the electroweak sector.

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Language(s): eng - English
 Dates: 2013-12
 Publication Status: Published online
 Pages: 27 Pages, 13 Figures
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 Table of Contents: -
 Rev. Type: -
 Degree: -

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Title: Journal of high energy physics : JHEP
Source Genre: Journal
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Publ. Info: Bologna, Italy : Società italiana di fisica
Pages: - Volume / Issue: 2013 (12) Sequence Number: 076 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002
DOI: 10.1007/JHEP12(2013)076