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Title: Electroweak Kaluza-Klein dark matter

In models with universal extra dimensions (UED), the lightest Kaluza-Klein excitation of neutral electroweak gauge bosons is a stable, weakly interacting massive particle and thus is a candidate for dark matter thanks to Kaluza-Klein parity. We examine concrete model realizations of such dark matter in the context of non-minimal UED extensions. The boundary localized kinetic terms for the electroweak gauge bosons lead to a non-trivial mixing among the first Kaluza-Klein excitations of the $${\rm SU}(2)_W$$ and $${\rm U}(1)_Y$$ gauge bosons and the resultant low energy phenomenology is rich. We investigate implications of various experiments including low energy electroweak precision measurements, direct and indirect detection of dark matter particles and direct collider searches at the LHC. Furthermore, we show that the electroweak Kaluza-Klein dark matter can be as heavy as 2.4 TeV, which is significantly higher than $1.3$ TeV as is indicated as an upper bound in the minimal UED model.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Center for Theoretical Physics of the Universe, Daejeon (Korea)
  2. Center for Theoretical Physics of the Universe, Daejeon (Korea); Sungkyunkwan Univ., Suwon (Korea)
  3. Univ. of Kansas, Lawrence, KS (United States); Univ. of Pittsburgh, Pittsburgh, PA (United States)
  4. Univ. of Kansas, Lawrence, KS (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. Yonsei Univ., Seoul (Korea); Korea Institute for Advanced Study, Seoul (Korea)
Publication Date:
Report Number(s):
CTPU-16-31; FERMILAB-PUB-16-554-T; PITT-PACC-1616; arXiv:1702.02949
Journal ID: ISSN 1029-8479; 1512932; TRN: US1700547
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 4; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
Fermi National Accelerator Lab. (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; Phenomenology of Field Theories in Higher Dimensions; Phenomenology of Large extra dimensions
OSTI Identifier:
1350512