TeV symmetry and the little hierarchy problem

By Hsin-Chia Cheng, I. Low. 2003

495 citations recorded by the source corpus.

Constraints from precision electroweak measurements reveal no evidence for new physics up to 5–7 TeV, whereas naturalness requires new particles at around 1 TeV to address the stability of the electroweak scale. We show that this ``little hierarchy problem'' can be cured by introducing a symmetry for new particles at the TeV scale. As an example, we construct a little Higgs model with this new symmetry, dubbed T-parity, which naturally solves the little hierarchy problem and, at the same time, stabilize the electroweak scale up to 10 TeV. The model has many important phenomenological consequences, including consistency with the precision data without any fine-tuning, a stable weakly-interacting particle as the dark matter candidate, as well as collider signals completely different from existing little Higgs models, but rather similar to the supersymmetric theories with conserved R-parity.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/aec31d9c48d2d1b60f46a2e42dc05d7aaf094efa

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Stop the top background of the stop search (2012, methodology): “Examples are the little Higgs models with T -parity [25–28], models with the exotic fourth generation and dark matter [29], models with gauged baryon and lepton numbers [30], and so on.”
Folded supersymmetry and the LEP paradox (2006, background): “Models of this type with a custodial SU(2) [4] and T-parity [5] do not give large corrections to precision electroweak observables.”
Interpreting LHC Higgs results from natural new physics perspective (2012, background): “This situation occurs in Little Higgs with T-parity [57, 58].”
ILC Higgs White Paper (2013, background): “The challenge of precision electroweak observables is still present but can be overcome by introducing a discrete T -parity [184, 185] (whose consequences are similar to that of R-parity in supersymmetry models).”
LITTLE HIGGS THEORIES (2005, methodology): “[25] implemented-T parity in a variation of the Minimal Moose model.”
Hidden vector dark matter (2008, methodology): “To our knowledge models of spin-1 DM which have been proposed involve either more than 4 dimensions [12] or an explicit discrete symmetry (little Higgs DM with T-parity [13]).”
T parity and the littlest Higgs (2004, methodology): “[9] a three-site moose model was constructed in which the T -parity is a variant of the Z2 reflection symmetry between two sites.”
Little hierarchy, little higgses, and a little symmetry (2004, methodology): “[28] a three-site model with T -parity was constructed.”