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Title: Colorless top partners, a 125 GeV Higgs boson, and the limits on naturalness

Journal Article · · Physical Review. D, Particles, Fields, Gravitation and Cosmology
 [1];  [2];  [3];  [4];  [2]
  1. Univ. de Sao Paulo, Sao Paulo (Brazil)
  2. Univ. of Maryland, College Park, MD (United States)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  4. Univ. Estadual Paulista, Sao Paulo (Brazil)

Theories of physics beyond the Standard Model that address the hierarchy problem generally involve top partners, new particles that cancel the quadratic divergences associated with the Yukawa coupling of the Higgs to the top quark. With extensions of the Standard Model that involve new colored particles coming under strain from collider searches, scenarios in which the top partners carry no charge under the strong interactions have become increasingly compelling. Although elusive for direct searches, these theories predict modified couplings of the Higgs boson to the Standard Model particles. This results in corrections to the Higgs production and decay rates that can be detected at the Large Hadron Collider (LHC) provided the top partners are sufficiently light, and the theory correspondingly natural. In this paper we consider three theories that address the little hierarchy problem and involve colorless top partners, specifically the Mirror Twin Higgs, Folded Supersymmetry, and the Quirky Little Higgs. For each model we investigate the current and future bounds on the top partners, and the corresponding limits on naturalness, that can be obtained from the Higgs program at the LHC. Here, we conclude that the LHC will not be able to strongly disfavor naturalness, with mild tuning at the level of about one part in ten remaining allowed even with 3000 fb$$^{-1}$$ of data at 14 TeV.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1327278
Report Number(s):
FERMILAB-PUB-14-471-T; arXiv:1411.3310; PRVDAQ; 1327507
Journal Information:
Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 91, Issue 5; ISSN 1550-7998
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 86 works
Citation information provided by
Web of Science

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Cited By (25)

Alternatives to an elementary Higgs journal October 2016
Discovering the twin Higgs boson with displaced decays journal April 2019
Towards a no-lose theorem for naturalness journal March 2016
Holographic Twin Higgs Model journal May 2015
The fraternal WIMP miracle journal October 2015
Heavy Higgs of the Twin Higgs models journal February 2018
Asymmetric twin Dark Matter journal November 2015
Testing the scalar sector of the twin Higgs model at colliders journal March 2018
Solving the Hierarchy Problem Discretely journal June 2018
Long-lived particles at the energy frontier: the MATHUSLA physics case journal October 2019
Neutrino masses from neutral top partners journal October 2015
Alternatives to an Elementary Higgs text January 2016
Cosmological Relaxation of the Electroweak Scale journal November 2015
Twin Higgs mechanism and a composite Higgs boson journal May 2015
Spontaneous twin symmetry breaking journal December 2019
Cosmological bounds on non-Abelian dark forces journal April 2018
Collider signals of the Mirror Twin Higgs boson through the hypercharge portal journal August 2019
A Holographic Twin Higgs Model text January 2014
Neutrino Masses from Neutral Top Partners text January 2015
Cosmological Relaxation of the Electroweak Scale text January 2015
The Fraternal WIMP Miracle text January 2015
Cosmological Bounds on Non-Abelian Dark Forces text January 2017
Testing the Scalar Sector of the Twin Higgs Model at Colliders text January 2017
Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case text January 2018
Discovering the Twin Higgs Boson with Displaced Decays text January 2018

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