Results 21 to 30 of about 164 (103)
Journal of High Energy Physics, 2018 Many composite Higgs models predict the existence of vector-like quarks with masses outside the reach of the LHC, e.g. m Q ≳ 2 TeV, in particular if these models contain a dark matter candidate.
Mikael Chala +2 more
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The W boson mass weighs in on the non-standard Higgs
Physics Letters B, 2022 We consider the implications of the CDF collaboration high-precision measurement of the W boson mass on models with a non-standard Higgs. We show that this requires an enhancement of more than 5% in the non-standard Higgs coupling to the gauge bosons ...
Giacomo Cacciapaglia, Francesco Sannino
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Neutrino Majorana masses in a composite technicolor standard model
Physics Letters B, 1987 Abstract We show that the neutrino Majorana masses can be incorporated within a composite technicolor standard model. We discuss the bounds on the parameters of such a model arising from the failure to observe lepton-number violating processes.
Vineer Bhansali, Howard Georgi
openaire +1 more source
Electroweak symmetry breaking and collider signatures in the next-to-minimal composite Higgs model
Journal of High Energy Physics, 2017 We conduct a detailed numerical analysis of the composite pseudo-Nambu-Goldstone Higgs model based on the next-to-minimal coset SO(6)/SO(5) ≅ SU(4)/Sp(4), featuring an additional SM singlet scalar in the spectrum, which we allow to mix with the Higgs ...
Christoph Niehoff +2 more
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The LHC potential of vector-like quark doublets
Journal of High Energy Physics, 2018 The existence of new vector-like quarks is often predicted by models of new physics beyond the Standard Model, and the development of discovery strategies at colliders is the object of an intense effort from the high-energy community.
Giacomo Cacciapaglia +5 more
doaj +1 more source
Effective theories of dark mesons with custodial symmetry
Journal of High Energy Physics, 2019 Dark mesons are bosonic composites of a new, strongly-coupled sector beyond the Standard Model. We consider several dark sectors with fermions that transform under the electroweak group, as arise from a variety of models including strongly-coupled ...
Graham D. Kribs, Adam Martin, Tom Tong
doaj +1 more source
Collider tests of the Renormalizable Coloron Model
Journal of High Energy Physics, 2018 The coloron, a massive version of the gluon present in gauge extensions of QCD, has been searched for at the LHC as a dijet or top quark pair resonance.
Yang Bai, Bogdan A. Dobrescu
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Fermion mass splitting in the technicolor coupled scenario
European Physical Journal C: Particles and Fields, 2020 We discuss fermion mass generation in unified models where QCD and technicolor (or any two strongly interacting theories) have their Schwinger–Dyson equations coupled.
A. Doff, A. A. Natale
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Advances in Astronomy, Volume 2019, Issue 1, 2019., 2019 This paper shows anthropic principle’s predicting symmetric distribution matter strata, their physics laws, and verifications, concretely deduces characteristic time, energy, and temperature expressions at different scales, discovers four interesting invariant quantities, shows homeomorphic theorem of space map, and naturally presents a supersymmetric ...
Changyu Huang +2 more
wiley +1 more source
An Analysis of a Minimal Vectorlike Extension of the Standard Model
Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017 We analyze an extension of the Standard Model with an additional SU(2) hypercolor gauge group keeping the Higgs boson as a fundamental field. Vectorlike interactions of new hyperquarks with the intermediate vector bosons are explicitly constructed. We also consider pseudo‐Nambu–Goldstone bosons caused by the symmetry breaking SU(4) → Sp(4).
V. Beylin +4 more
wiley +1 more source