Radiative corrections in the supersymmetric Higgs sector

2008 ◽  
pp. 225-259
Author(s):  
Stefan Pokorski
Keyword(s):  
Higgs Sector ◽  
Radiative Corrections

scholarly journals STATUS OF HIGHER-ORDER CORRECTIONS IN THE STANDARD ELECTROWEAK THEORY

1995 ◽  
Vol 10 (04) ◽  
pp. 443-464 ◽  
Author(s):  
BERND A. KNIEHL
Keyword(s):  
Standard Model ◽  
Higgs Sector ◽  
Higher Order ◽  
Threshold Effects ◽  
Electroweak Theory ◽  
Radiative Corrections ◽  
Gauge Sector ◽  
The Standard Model ◽  
Text Mode ◽  
Higher Order Corrections

We review recent theoretical progress in the computation of radiative corrections beyond one loop within the standard model of electroweak interactions, in both the gauge and Higgs sectors. In the gauge sector, we discuss universal corrections of [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], and those due to virtual [Formula: see text]-threshold effects, as well as specific corrections to [Formula: see text] of [Formula: see text], [Formula: see text] and [Formula: see text] including finite-mb effects. We also present an update of the hadronic contributions to Δα. Theoretical uncertainties, other than those due to the lack of knowledge of MH and mt, are estimated. In the Higgs sector, we report on the [Formula: see text] corrections to [Formula: see text] including those which are specific for the [Formula: see text] mode, the [Formula: see text] corrections to [Formula: see text] including the finite-mq terms, and the [Formula: see text] corrections to Γ(H → gg).

scholarly journals Constraints from global symmetries on radiative corrections to the Higgs sector

1993 ◽  
Vol 302 (4) ◽  
pp. 435-441 ◽  
Author(s):  
Howard E. Haber ◽  
Alex Pomarol
Keyword(s):  
Global Symmetries ◽  
Higgs Sector ◽  
Radiative Corrections

HIGGS MASSES AND COUPLING WITHIN AN EXTENSION OF THE MSSM WITH HIGGS TRIPLETS

2002 ◽  
Vol 17 (04) ◽  
pp. 465-486 ◽  
Author(s):  
OLGA FÉLIX-BELTRÁN
Keyword(s):  
Higgs Boson ◽  
Effective Potential ◽  
Mass Difference ◽  
Higgs Sector ◽  
Higgs Bosons ◽  
Radiative Corrections ◽  
Gauge Bosons ◽  
The One ◽  
Susy Model

We study the properties of the Higgs sector in an extended SUSY model that includes a complex (Y=0) Higgs triplet. In particular, we evaluate the Higgs masses and their couplings to gauge bosons, including the leading radiative corrections using the one-loop effective potential. The mass difference between the CP-even and CP-odd neutral scalars, which can mimic a CP-violating Higgs signature of the MSSM, is also studied. Then, we study the range of parameters that are bounded from the LEP2 search for neutral Higgs bosons, as well as the corresponding region where at least one of the neutral CP-even Higgs boson can be detected at a future e+e- collider with a c.m. energy of 500 GeV.

scholarly journals PROBING HIGGS-SECTOR CP VIOLATION AT A PHOTON COLLIDER

2007 ◽  
Vol 22 (17) ◽  
pp. 1191-1208 ◽  
Author(s):  
JAE SIK LEE
Keyword(s):  
Higgs Boson ◽  
Cp Violation ◽  
Linear Collider ◽  
Higgs Sector ◽  
Radiative Corrections ◽  
Neutral Higgs Boson ◽  
Physics Potential ◽  
Photon Collider

In this review we demonstrate physics potential of a photon linear collider by studying the neutral Higgs–boson sector of the MSSM in which interesting CP-violating Higgs mixing could arise via radiative corrections.

scholarly journals Electroweak SU(2)L × U(1)Y model with strong spontaneously fermion-mass-generating gauge dynamics

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Petr Beneš ◽  
Jiří Hošek ◽  
Adam Smetana
Keyword(s):  
Chiral Symmetry Breaking ◽  
Axial Vector ◽  
Higgs Sector ◽  
Dyson Equation ◽  
Mass Splitting ◽  
Fermion Mass ◽  
Goldstone Bosons ◽  
The Standard Model ◽  
Exploratory Stage ◽  
The Masses

Abstract Higgs sector of the Standard model (SM) is replaced by quantum flavor dynamics (QFD), the gauged flavor SU(3)f symmetry with scale Λ. Anomaly freedom requires addition of three νR. The approximate QFD Schwinger-Dyson equation for the Euclidean infrared fermion self-energies Σf(p2) has the spontaneous-chiral-symmetry-breaking solutions ideal for seesaw: (1) Σf(p2) = $$ {M}_{fR}^2/p $$ M fR 2 / p where three Majorana masses MfR of νfR are of order Λ. (2) Σf(p2) = $$ {m}_f^2/p $$ m f 2 / p where three Dirac masses mf = m(0)1 + m(3)λ3 + m(8)λ8 of SM fermions are exponentially suppressed w.r.t. Λ, and degenerate for all SM fermions in f. (1) MfR break SU(3)f symmetry completely; m(3), m(8) superimpose the tiny breaking to U(1) × U(1). All flavor gluons thus acquire self-consistently the masses ∼ Λ. (2) All mf break the electroweak SU(2)L × U(1)Y to U(1)em. Symmetry partners of the composite Nambu-Goldstone bosons are the genuine Higgs particles: (1) three νR-composed Higgses χi with masses ∼ Λ. (2) Two new SM-fermion-composed Higgses h3, h8 with masses ∼ m(3), m(8), respectively. (3) The SM-like SM-fermion-composed Higgs h with mass ∼ m(0), the effective Fermi scale. Σf(p2)-dependent vertices in the electroweak Ward-Takahashi identities imply: the axial-vector ones give rise to the W and Z masses at Fermi scale. The polar-vector ones give rise to the fermion mass splitting in f. At the present exploratory stage the splitting comes out unrealistic.

scholarly journals Precision Higgs couplings in neutral naturalness models: an effective field theory approach

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Lucien Heurtier ◽  
Hao-Lin Li ◽  
Huayang Song ◽  
Shufang Su ◽  
Wei Su ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Goldstone Boson ◽  
Higgs Sector ◽  
New Physics ◽  
Effective Field ◽  
Precision Measurements ◽  
Global Symmetry ◽  
Theory Approach ◽  
Decay Channels

AbstractThe Higgs sector in neutral naturalness models provides a portal to the hidden sectors, and thus measurements of Higgs couplings at current and future colliders play a central role in constraining the parameter space of the model. We investigate a class of neutral naturalness models, in which the Higgs boson is a pseudo-Goldstone boson from the universal SO(N)/SO(N −1) coset structure. Integrating out the radial mode from the spontaneous global symmetry breaking, we obtain various dimension-six operators in the Standard Model effective field theory, and calculate the low energy Higgs effective potential with radiative corrections included. We perform aχ2fit to the Higgs coupling precision measurements at current and future colliders and show that the new physics scale could be explored up to 2.3 (2.4) TeV without (with) the Higgs invisible decay channels at future Higgs factories. The limits are comparable to the indirect constraints obtained via electroweak precision measurements.

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