Dynamical origin of the electroweak scale and the 125 GeV scalar
Di Chiara, S., Foadi, R., Tuominen, K., & Tähtinen, S. K. (2015). Dynamical origin of the electroweak scale and the 125 GeV scalar. Nuclear Physics B, 900, 295-330. https://doi.org/10.1016/j.nuclphysb.2015.09.013
Julkaistu sarjassa
Nuclear Physics BPäivämäärä
2015Tekijänoikeudet
© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
2015:3 | 2016:81 | 2017:181 | 2018:354 | 2019:187 | 2020:70 | 2021:48 | 2022:34 | 2023:48 | 2024:37 | 2025:2
We consider a fully dynamical origin for the masses of weak gauge bosons and heavy quarks of the Standard
Model. Electroweak symmetry breaking and the gauge boson masses arise from new strong dynamics,
which leads to the appearance of a composite scalar in the spectrum of excitations. In order to generate mass
for the Standard Model fermions, we consider extended gauge dynamics, effectively represented by four
fermion interactions at presently accessible energies. By systematically treating these interactions, we show
that they lead to a large reduction of the mass of the scalar resonance. Therefore, interpreting the scalar
as the recently observed 125 GeV state implies that the mass originating solely from new strong dynamics
can be much heavier, i.e. of the order of 1 TeV. In addition to reducing the mass of the scalar resonance,
we show that the four-fermion interactions allow for contributions to the oblique corrections in agreement
with the experimental constraints. The couplings of the scalar resonance with the Standard Model gauge
bosons and fermions are evaluated, and found to be compatible with the current LHC results. Additional
new resonances are expected to be heavy, with masses of the order of a few TeVs, and hence accessible in
future experiments.
...
Julkaisija
Elsevier B.V.ISSN Hae Julkaisufoorumista
0550-3213
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http://creativecommons.org/licenses/by/4.0/Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/25339447
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