Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-06-24
Phys.Rev.Lett.96:231802,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages
Scientific paper
10.1103/PhysRevLett.96.231802
We present `twin Higgs models', simple realizations of the Higgs as a pseudo-Goldstone boson that protect the weak scale from radiative corrections up to scales of order 5 - 10 TeV. In the ultra-violet these theories have a discrete symmetry which interchanges each Standard Model particle with a corresponding particle which transforms under a twin or mirror Standard Model gauge group. In addition, the Higgs sector respects an approximate global SU(4) symmetry. When this global symmetry is broken, the discrete symmetry tightly constrains the form of corrections to the pseudo-Goldstone Higgs potential, allowing natural electroweak symmetry breaking. Precision electroweak constraints are satisfied by construction. These models demonstrate that, contrary to the conventional wisdom, stabilizing the weak scale does not require new light particles charged under the Standard Model gauge groups.
Chacko Zackaria
Goh Hock-Seng
Harnik Roni
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