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What precision electroweak physics says about the [Formula Presented] little Higgs model

Publication ,  Journal Article
Gregoire, T; Smith, DR; Wacker, JG
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
January 1, 2004

We study precision electroweak constraints on the close cousin of the littlest Higgs model, the [Formula Presented] model. We identify a near-oblique limit in which the heavy [Formula Presented] and [Formula Presented] decouple from the light fermions, and then calculate oblique corrections, including one-loop contributions from the extended top sector and the two Higgs doublets. We find regions of parameter space that give acceptably small precision electroweak corrections and only mild fine-tuning in the Higgs potential, and also find that the mass of the lightest Higgs boson is relatively unconstrained by precision electroweak data. The fermions from the extended top sector can be as light as [Formula Presented] and the [Formula Presented] can be as light as [Formula Presented] We include an independent breaking scale for the [Formula Presented] which can still have a mass as low as a few hundred GeV. © 2004 The American Physical Society.

Duke Scholars

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

January 1, 2004

Volume

69

Issue

11

Related Subject Headings

  • Nuclear & Particles Physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

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Gregoire, T., Smith, D. R., & Wacker, J. G. (2004). What precision electroweak physics says about the [Formula Presented] little Higgs model. Physical Review D - Particles, Fields, Gravitation and Cosmology, 69(11). https://doi.org/10.1103/PhysRevD.69.115008
Gregoire, T., D. R. Smith, and J. G. Wacker. “What precision electroweak physics says about the [Formula Presented] little Higgs model.” Physical Review D - Particles, Fields, Gravitation and Cosmology 69, no. 11 (January 1, 2004). https://doi.org/10.1103/PhysRevD.69.115008.
Gregoire T, Smith DR, Wacker JG. What precision electroweak physics says about the [Formula Presented] little Higgs model. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2004 Jan 1;69(11).
Gregoire, T., et al. “What precision electroweak physics says about the [Formula Presented] little Higgs model.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 69, no. 11, Jan. 2004. Scopus, doi:10.1103/PhysRevD.69.115008.
Gregoire T, Smith DR, Wacker JG. What precision electroweak physics says about the [Formula Presented] little Higgs model. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2004 Jan 1;69(11).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

January 1, 2004

Volume

69

Issue

11

Related Subject Headings

  • Nuclear & Particles Physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences