Composite (Goldstone) Higgs Dynamics on the Lattice: Spectrum of SU(2) Gauge Theory with two Fundamental Fermions

Rudy Arthur, Vincent Drach, Martin Rasmus Lundquist Hansen, Ari Hietanen, Randy Lewis, Claudio Pica, Francesco Sannino

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Abstract

We study the meson spectrum of the SU(2) gauge theory with two Wilson fermions in the fundamental representation. The theory unifies both Technicolor and composite Goldstone Boson Higgs models of electroweak symmetry breaking. We have calculated the masses of the lightest spin one vector and axial vector mesons. In addition, we have also obtained preliminary results for the mass of the lightest scalar (singlet) meson state. The simulations have been done with multiple masses and two different lattice spacings for chiral and continuum extrapolations. The spin one meson masses set lower limits for accelerator experiments, whereas the scalar meson will mix with a pGB of the theory and produce two scalar states. The lighter of the states is the 125 GeV Higgs boson, and the heavier would be a new yet unobserved scalar state.
Original languageEnglish
Article number249
JournalP o S - Proceedings of Science
Volume214
Number of pages6
ISSN1824-8039
DOIs
Publication statusPublished - 23. Dec 2014
Event32nd International Symposium on Lattice Field Theory - Columbia University, New York, United States
Duration: 23. Jun 201428. Jun 2014

Conference

Conference32nd International Symposium on Lattice Field Theory
LocationColumbia University
Country/TerritoryUnited States
CityNew York
Period23/06/201428/06/2014

Bibliographical note

7 pages, 5 figures, talk presented at The 32nd International Symposium on Lattice Field Theory, June 23-28, 2014, Columbia University, New York

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