scholarly journals Is Radiative Electroweak Symmetry Breaking Consistent with a 125 GeV Higgs Mass?

2013 ◽  
Vol 110 (15) ◽  
Author(s):  
T. G. Steele ◽  
Zhi-Wei Wang
Keyword(s):  
Symmetry Breaking ◽  
Higgs Mass ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry

scholarly journals Top condensation model: a step towards the correct prediction of the Higgs mass

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
A. A. Osipov ◽  
B. Hiller ◽  
A. H. Blin ◽  
F. Palanca ◽  
J. Moreira ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Higgs Mass ◽  
Proper Time ◽  
Direct Consequence ◽  
Higgs Doublet ◽  
Electroweak Symmetry Breaking ◽  
Correct Prediction ◽  
Electroweak Symmetry ◽  
Composite Higgs ◽  
Mass Formulas

AbstractA realization of the composite Higgs scenario in the context of the effective model with the $$SU(2)_L\times U(1)_R$$ S U ( 2 ) L × U ( 1 ) R symmetric four-Fermi interactions proposed by Miransky, Tanabashi and Yamawaki is studied. The model implements Nambu’s mechanism of dynamical electroweak symmetry breaking leading to the formation of $${{\bar{t}}}t$$ t ¯ t and $${{\bar{b}}}b$$ b ¯ b quark condensates. We explore the vacuum structure and spectrum of the model by using the Schwinger proper-time method. As a direct consequence of this mechanism, the Higgs acquires a mass in accord with its experimental value. The present prediction essentially differs from the known overestimated value, $$m_\chi = 2m_t$$ m χ = 2 m t , making more favourable the top condensation scenario presented here. The mass formulas for the members of the second Higgs doublet are also obtained. The Nambu sum rule is discussed. It is shown that the anomalous $$U(1)_A$$ U ( 1 ) A symmetry breaking modifies this rule at next to leading order in $$1/N_c$$ 1 / N c .

scholarly journals Radiative electroweak symmetry breaking beyond leading logarithms

2006 ◽  
Vol 84 (6-7) ◽  
pp. 545-550
Author(s):  
V Elias ◽  
R B Mann ◽  
D.G.C. McKeon ◽  
T G Steele
Keyword(s):  
Field Theory ◽  
Scalar Field ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Top Quark ◽  
Higgs Mass ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
The Standard Model ◽  
Leading Logarithm

The top-quark Yukawa coupling is too large to permit radiative electroweak symmetry breaking to occur, to leading-logarithm order, for small values of y — the Higgs self-coupling. However, a large y solution leading to a viable Higgs mass of approximately 220 GeV does exist, and differs from conventional symmetry breaking by an approximately five-fold enhancement of the Higgs self-coupling. This scenario for radiative symmetry breaking is reviewed, and the order-by-order perturbative stability of this scenario is studied within the scalar-field theory projection of the Standard Model in which the Higgs self-coupling y represents the dominant Standard-Model coupling.PACS Nos.: 11.30.Qc, 11.10.Hi, 11.15.Tk, 12.15.Lk

scholarly journals Dark matter spectra from the electroweak to the Planck scale

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Christian W. Bauer ◽  
Nicholas L. Rodd ◽  
Bryan R. Webber
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Planck Scale ◽  
Electroweak Symmetry Breaking ◽  
Indirect Detection ◽  
Electroweak Symmetry ◽  
Stable States ◽  
Decay Spectrum ◽  
Crucial Ingredient

Abstract We compute the decay spectrum for dark matter (DM) with masses above the scale of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard process involving a decay to the unbroken standard model, we determine the prompt distribution of stable states including photons, neutrinos, positrons, and antiprotons. These spectra are a crucial ingredient in the search for DM via indirect detection at the highest energies as being probed in current and upcoming experiments including IceCube, HAWC, CTA, and LHAASO. Our approach improves considerably on existing methods, for instance, we include all relevant electroweak interactions.

scholarly journals ANOMALOUS U(1)A AND ELECTROWEAK SYMMETRY BREAKING

2001 ◽  
Vol 16 (13) ◽  
pp. 835-844
Author(s):  
ILIA GOGOLADZE ◽  
MIRIAN TSULAIA
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Supersymmetric Standard Model ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
Superstring Theory

We suggest a new mechanism for electroweak symmetry breaking in the supersymmetric Standard Model. Our suggestion is based on the presence of an anomalous U (1)A gauge symmetry, which naturally arises in the four-dimensional superstring theory, and heavily relies on the value of the corresponding Fayet–Illiopoulos ξ-term.

scholarly journals Dynamical electroweak symmetry breaking in the model of electroweak-scale right-handed neutrinos

2016 ◽  
Vol 31 (11) ◽  
pp. 1650065
Author(s):  
Pham Quang Hung ◽  
Nguyen Nhu Le
Keyword(s):  
Symmetry Breaking ◽  
Higgs Doublet ◽  
Higgs Mechanism ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
Electroweak Scale ◽  
Text Model ◽  
The Rich ◽  
Higgs Fields

We present the Higgs mechanism in the context of the EW-scale [Formula: see text] model in which electroweak symmetry is dynamically broken by condensates of mirror quark and right-handed neutrino through the exchange of one fundamental Higgs doublet and one fundamental Higgs triplet, respectively. The formation of these condensates is dynamically investigated by using the Schwinger–Dyson approach. The occurrence of these condensates will give rise to the rich Higgs spectrum. In addition, the VEVs of Higgs fields is also discussed in this dynamical phenomenon.

scholarly journals Natural inflation after Planck 2018

2022 ◽  
Vol 2022 (01) ◽  
pp. 022
Author(s):  
Nina K. Stein ◽  
William H. Kinney
Keyword(s):  
Symmetry Breaking ◽  
High Precision ◽  
Confidence Region ◽  
Hubble Constant ◽  
Current Data ◽  
Electroweak Symmetry Breaking ◽  
Observational Constraints ◽  
Electroweak Symmetry ◽  
History Of ◽  
The Universe

Abstract We calculate high-precision constraints on Natural Inflation relative to current observational constraints from Planck 2018 + BICEP/Keck(BK15) Polarization + BAO on r and n S, including post-inflationary history of the universe. We find that, for conventional post-inflationary dynamics, Natural Inflation with a cosine potential is disfavored at greater than 95% confidence out by current data. If we assume protracted reheating characterized by w̅>1/3, Natural Inflation can be brought into agreement with current observational constraints. However, bringing unmodified Natural Inflation into the 68% confidence region requires values of T re below the scale of electroweak symmetry breaking. The addition of a SHOES prior on the Hubble Constant H 0 only worsens the fit.

scholarly journals Electroweak Symmetry Breaking and New Physics at the TeV Scale

10.1142/3073 ◽  
1997 ◽  
Author(s):  
Timothy L Barklow ◽  
Sally Dawson ◽  
Howard E Haber ◽  
James L Siegrist
Keyword(s):  
Symmetry Breaking ◽  
New Physics ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry
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