Supersymmetric quantum effects on electroweak precision observables

2008 ◽  
pp. 187-224
Author(s):  
J. Solà
Keyword(s):  
Quantum Effects ◽  
Precision Observables ◽  
Electroweak Precision

scholarly journals Suppressing electroweak precision observables in 5D warped models

2011 ◽  
Vol 2011 (5) ◽  
Author(s):  
Joan A. Cabrer ◽  
Gero von Gersdorff ◽  
Mariano Quirós
Keyword(s):  
Precision Observables ◽  
Electroweak Precision

scholarly journals Constraining the gauge and scalar sectors of the doublet left-right symmetric model

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Véronique Bernard ◽  
Sébastien Descotes-Genon ◽  
Luiz Vale Silva
Keyword(s):  
Symmetry Breaking ◽  
Electroweak Symmetry Breaking ◽  
Symmetric Model ◽  
Electroweak Symmetry ◽  
Gauge Bosons ◽  
Spontaneous Breakdown ◽  
The Standard Model ◽  
Low Energies ◽  
Precision Observables ◽  
Electroweak Precision

Abstract We consider a left-right symmetric extension of the Standard Model where the spontaneous breakdown of the left-right symmetry is triggered by doublets. The electroweak ρ parameter is protected from large corrections in this Doublet Left-Right Model (DLRM), contrary to the triplet case. This allows in principle for more diverse patterns of symmetry breaking. We consider several constraints on the gauge and scalar sectors of DLRM: the unitarity of scattering processes involving gauge bosons with longitudinal polarisations, the radiative corrections to the muon ∆r parameter and the electroweak precision observables measured at the Z pole and at low energies. Combining these constraints within the frequentist CKMfitter approach, we see that the fit pushes the scale of left-right symmetry breaking up to a few TeV, while favouring an electroweak symmetry breaking triggered not only by the SU(2)L×SU(2)R bi-doublet, which is the case most commonly considered in the literature, but also by the SU(2)L doublet.

scholarly journals Electroweak precision observables and the unhiggs

2009 ◽  
Vol 2009 (12) ◽  
pp. 061-061 ◽  
Author(s):  
Adam Falkowski ◽  
Manuel Pérez-Victoria
Keyword(s):  
Precision Observables ◽  
Electroweak Precision

scholarly journals Supersymmetric Contributions to Electroweak Precision Observables: QCD Corrections

1997 ◽  
Vol 78 (19) ◽  
pp. 3626-3629 ◽  
Author(s):  
A. Djouadi ◽  
P. Gambino ◽  
S. Heinemeyer ◽  
W. Hollik ◽  
C. Jünger ◽  
...  
Keyword(s):  
Precision Observables ◽  
Electroweak Precision

scholarly journals Leading QCD corrections to scalar quark contributions to electroweak precision observables

1998 ◽  
Vol 57 (7) ◽  
pp. 4179-4196 ◽  
Author(s):  
A. Djouadi ◽  
P. Gambino ◽  
S. Heinemeyer ◽  
W. Hollik ◽  
C. Jünger ◽  
...  
Keyword(s):  
Scalar Quark ◽  
Precision Observables ◽  
Electroweak Precision

scholarly journals Theory requirements for SM Higgs and EW precision physics at the FCC-ee

2021 ◽  
Vol 136 (9) ◽  
Author(s):  
S. Heinemeyer ◽  
S. Jadach ◽  
J. Reuter
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
High Precision ◽  
Boson Mass ◽  
Experimental Measurements ◽  
Mixing Angle ◽  
The Standard Model ◽  
The Status ◽  
Precision Observables ◽  
Electroweak Precision

AbstractHigh-precision experimental measurements of the properties of the Higgs boson at $$\sim 125$$ ∼ 125  GeV as well as electroweak precision observables such as the W-boson mass or the effective weak leptonic mixing angle are expected at future $$e^+e^-$$ e + e - colliders such as the FCC-ee. This high anticipated precision has to be matched with theory predictions for the measured quantities at the same level of accuracy. We briefly summarize the status of these predictions within the standard model and of the tools that are used for their determination. We outline how the theory predictions will have to be improved in order to reach the required accuracy, and also comment on the simulation frameworks for the Higgs and EW precision program.

scholarly journals Global fits of third family hypercharge models to neutral current B-anomalies and electroweak precision observables

2021 ◽  
Vol 81 (8) ◽  
Author(s):  
B. C. Allanach ◽  
J. Eliel Camargo-Molina ◽  
Joe Davighi
Keyword(s):  
Standard Model ◽  
Neutral Current ◽  
Data Set ◽  
The Standard Model ◽  
Precision Observables ◽  
Electroweak Precision ◽  
Combined Data

AbstractWhile it is known that third family hypercharge models can explain the neutral current B-anomalies, it was hitherto unclear whether the $$Z-Z^\prime $$ Z - Z ′ mixing predicted by such models could simultaneously fit electroweak precision observables. Here, we perform global fits of several third family hypercharge models to a combination of electroweak data and those data pertinent to the neutral current B-anomalies. While the Standard Model is in tension with this combined data set with a p-value of .0007, simple versions of the models (fitting two additional parameters each) provide much improved fits. The original Third Family Hypercharge Model, for example, has a p-value of $${.065}$$ . 065 , with $$\sqrt{\Delta \chi ^2}=6.5\sigma $$ Δ χ 2 = 6.5 σ .

scholarly journals Status of the fourth fermion generation before ICHEP2012: Higgs data and electroweak precision observables

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
Otto Eberhardt ◽  
Alexander Lenz ◽  
Andreas Menzel ◽  
Ulrich Nierste ◽  
Martin Wiebusch
Keyword(s):  
Precision Observables ◽  
Electroweak Precision ◽  
Fermion Generation ◽  
Higgs Data
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