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The Half-composite Two Higgs Doublet Model and the Relaxion · Around

2015

The Half-composite Two Higgs Doublet Model and the Relaxion

Antipin, Oleg, Redi, Michele

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We study a new confining gauge theory with fermions in a vectorial representation under the SM gauge group that allows for Yukawa interactions with the Higgs.

If the fermion masses are smaller than the confinement scale this realizes a type I two Higgs doublet model where a composite Higgs mixes with the elementary Higgs.
This class of models interpolates between an elementary and a composite Higgs and has interesting phenomenology with potentially observables effects in collider physics, EDMs and SM couplings but very weak bounds from indirect searches.
The very same framework can be used to realize the cosmological relaxation of the electro-weak scale recently discussed in the literature.

Built on

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Similar

X. Zhang and B. L. Young, “Effective Lagrangian approach to electroweak baryogenesis: Higgs mass limit and electric dipole moments of fermion,” Phys. Rev. D
1997
Cited alongside, same era.
N. Arkani-Hamed, S. Dimopoulos, G. F. Giudice and A. Romanino, “Aspects of split supersymmetry,” Nucl. Phys. B 709, 3 (2005) [hep-ph/0409232]
2005
Cited alongside, same era.
G. F. Giudice, C. Grojean, A. Pomarol and R. Rattazzi, “The Strongly-Interacting Light Higgs,” JHEP
2007
Cited alongside, same era.
C. Kilic, T. Okui and R. Sundrum, “Vectorlike Confinement at the LHC,” JHEP 1002, 018 (2010) [
Original
2010
Cited alongside, same era.
O. Antipin, M. Redi, A. Strumia and E. Vigiani, “Accidental Composite Dark Matter,” arXiv:1503.08749 [hep-ph]
Original
Cited in the paper.
P. W. Graham, D. E. Kaplan and S. Rajendran, “Cosmological Relaxation of the Electroweak Scale,” arXiv:1504.07551 [hep-ph]
Original
Cited in the paper.
J. R. Espinosa, C. Grojean, G. Panico, A. Pomarol, O. Pujolas and G. Servant, “Cosmological Higgs-Axion Interplay for a Naturally Small Electroweak Scale,” arXiv:1506.09217 [hep-ph]
Original
Cited in the paper.
J. D. Wells, “Lectures on Higgs Boson Physics in the Standard Model and Beyond,” arXiv:0909.4541 [hep-ph]
Original
Cited in the paper.
The CDF collaboration public note: http://www-cdf.fnal.gov/physics/exotic/r2a/20140910.3gamma/
Cited in the paper.

Then

C. Kilic and T. Okui, “The LHC Phenomenology of Vectorlike Confinement,” JHEP
Original
2010
Later among the works it cites.
A. Freitas and P. Schwaller, “Multi-Photon Signals from Composite Models at LHC,” JHEP
Original
2011
Later among the works it cites.
J. Galloway, M. A. Luty, Y. Tsai and Y. Zhao, “Induced Electroweak Symmetry Breaking and Supersymmetric Naturalness,” Phys. Rev. D
Original
2014
Later among the works it cites.
O. Antipin, M. Redi and A. Strumia, “Dynamical generation of the weak and Dark Matter scales from strong interactions,” JHEP
Original
2015
Closest in time.

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