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Title: Breaking mirror twin color

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2]; ORCiD logo [3]
  1. Univ. of Pittsburgh, PA (United States). Dept. of Physics and Astronomy. Pittsburgh Particle Physics, Astrophysics, and Cosmology Center
  2. Univ. of Pittsburgh, PA (United States). Dept. of Physics and Astronomy. Pittsburgh Particle Physics, Astrophysics, and Cosmology Center
  3. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy

We investigate simple extensions of the Mirror Twin Higgs model in which the twin color gauge symmetry and the discrete Z2 mirror symmetry are spontaneously broken. This is accomplished in a minimal way by introducing a single new colored triplet, sextet, or octet scalar field and its twin along with a suitable scalar potential. This spontaneous Z2 breaking allows for a phenomenologically viable alignment of the electroweak vacuum, and leads to dramatic differences between the visible and mirror sectors with regard to the residual gauge symmetries at low energies, color confinement scales, and particle spectra. In particular, several of our models feature a remnant SU(2) or SO(3) twin color gauge symmetry with a very low confinement scale in comparison to ΛQCD. Furthermore, couplings between the colored scalar and matter provide a new dynamical source of twin fermion masses, and due to the mirror symmetry, these lead to a variety of correlated visible sector effects that can be probed through precision measurements and collider searches.

Research Organization:
Univ. of Pittsburgh, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0007914
OSTI ID:
1801790
Journal Information:
Journal of High Energy Physics (Online), Vol. 2020, Issue 8; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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