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Title: Ultra-weak sector, Higgs boson mass, and the dilaton

The Higgs boson mass may arise from a portal coupling to a singlet field $$\sigma$$ which has a very large VEV $$f \gg m_\text{Higgs}$$. This requires a sector of "ultra-weak" couplings $$\zeta_i$$, where $$\zeta_i \lesssim m_\text{Higgs}^2 / f^2$$. Ultra-weak couplings are technically naturally small due to a custodial shift symmetry of $$\sigma$$ in the $$\zeta_i \rightarrow 0$$ limit. The singlet field $$\sigma$$ has properties similar to a pseudo-dilaton. We engineer explicit breaking of scale invariance in the ultra-weak sector via a Coleman-Weinberg potential, which requires hierarchies amongst the ultra-weak couplings.
Authors:
 [1] ;  [2] ;  [1]
  1. University of Oxford, Oxford (United Kingdom)
  2. Fermi National Accelerator Laboratory, Batavia, IL (United States)
Publication Date:
OSTI Identifier:
1151747
Report Number(s):
FERMILAB-PUB--14-086-T
Journal ID: ISSN 0370-2693; PII: S0370269314006996; TRN: US1601130
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 738; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS