CanCPviolation arise solely from the gauge sector?

1992 ◽  
Vol 45 (9) ◽  
pp. 3186-3195 ◽  
Author(s):  
David London
Keyword(s):  
Gauge Sector

scholarly journals Covariant phase space and soft factorization in non-Abelian gauge theories

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Temple He ◽  
Prahar Mitra
Keyword(s):  
Phase Space ◽  
Ward Identity ◽  
Gauge Theories ◽  
Minkowski Spacetime ◽  
Soft Gluon ◽  
Careful Study ◽  
Abelian Gauge ◽  
Gauge Sector ◽  
Vacuum States ◽  
The One

Abstract We perform a careful study of the infrared sector of massless non-abelian gauge theories in four-dimensional Minkowski spacetime using the covariant phase space formalism, taking into account the boundary contributions arising from the gauge sector of the theory. Upon quantization, we show that the boundary contributions lead to an infinite degeneracy of the vacua. The Hilbert space of the vacuum sector is not only shown to be remarkably simple, but also universal. We derive a Ward identity that relates the n-point amplitude between two generic in- and out-vacuum states to the one computed in standard QFT. In addition, we demonstrate that the familiar single soft gluon theorem and multiple consecutive soft gluon theorem are consequences of the Ward identity.

scholarly journals Astrophysical aspects of milli-charged dark matter in a Higgs–Stueckelberg model

2015 ◽  
Vol 30 (18) ◽  
pp. 1550089 ◽  
Author(s):  
A. L. dos Santos ◽  
D. Hadjimichef
Keyword(s):  
Dark Matter ◽  
Weakly Interacting Massive Particles ◽  
Dark Sector ◽  
Minimal Coupling ◽  
Astrophysical Application ◽  
Gauge Sector ◽  
Dark Photon ◽  
The Standard Model ◽  
Vector Bosons ◽  
The Impact

An extension of the Standard Model (SM) is studied, in which two new vector bosons are introduced, a first boson Z' coupled to the SM by the usual minimal coupling, producing an enlarged gauge sector in the SM. The second boson A' field, in the dark sector of the model, remains massless and originates a dark photon γ'. A hybrid mixing scenario is considered based on a combined Higgs and Stueckelberg mechanisms. In a Compton-like process, a photon scattered by a weakly interacting massive particles (WIMP) is converted into a dark photon. This process is studied, in an astrophysical application obtaining an estimate of the impact on stellar cooling of white dwarfs and neutron stars.

scholarly journals $\mathcal{N}=1$ Supersymmetric $SU(3)$ Gauge Theory - Pure Gauge sector with a twist

2019 ◽  
Author(s):  
Marc Steinhauser ◽  
Andre Sternbeck ◽  
Bjorn Wellegehausen ◽  
Andreas Wipf
Keyword(s):  
Gauge Theory ◽  
Gauge Sector ◽  
Pure Gauge

scholarly journals Safe hologram

2020 ◽  
Vol 35 (33) ◽  
pp. 2050273
Author(s):  
Borut Bajc ◽  
Adrián Lugo ◽  
Francesco Sannino
Keyword(s):  
Field Theory ◽  
Scalar Theory ◽  
Gauge Sector

We propose to describe the gauge sector of an asymptotically safe field theory in [Formula: see text] dimensions as a scalar theory on fixed AdS in [Formula: see text]-dimensions using the holographic dictionary.

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).

Homogeneous and isotropic closed cosmologies with a gauge sector

1991 ◽  
Vol 8 (10) ◽  
pp. 1815-1831 ◽  
Author(s):  
P V Moniz ◽  
J M Mourao
Keyword(s):  
Gauge Sector

scholarly journals Exploring variations in the gauge sector of a six-dimensional flavour model

2015 ◽  
Vol 120 (3) ◽  
pp. 380-385 ◽  
Author(s):  
J. -M. Frère ◽  
M. Libanov ◽  
S. Mollet ◽  
S. Troitsky
Keyword(s):  
Gauge Sector

scholarly journals NonzeroZ→γγdecays in the renormalizable gauge sector of the noncommutative standard model

2007 ◽  
Vol 75 (9) ◽  
Author(s):  
M. Burić ◽  
D. Latas ◽  
V. Radovanović ◽  
J. Trampetić
Keyword(s):  
Standard Model ◽  
Gauge Sector

FLAVOR VIOLATION FROM Z PENGUINS IN THE LEFT–RIGHT SUPERSYMMETRIC MODEL

2004 ◽  
Vol 19 (03) ◽  
pp. 189-196
Author(s):  
MARIANA FRANK
Keyword(s):  
Second Order ◽  
Supersymmetric Model ◽  
Order Effects ◽  
Sensitive Test ◽  
Kaon Decays ◽  
Gauge Sector ◽  
Flavor Violation ◽  
Flavor Changing ◽  
Mass Insertion ◽  
Supersymmetric Models

We analyze the effects of flavor-changing ZL penguin diagrams on rare kaon decays in a left–right supersymmetric model (LRSUSY). Using the mass-insertion approximation and including up to second-order effects, we show that the constraints obtained on up-sector flavor violating parameters can be stronger than previous bounds. These effects present a sensitive test of an extended gauge sector in supersymmetry and can be used to distinguish LRSUSY from other supersymmetric models.

scholarly journals Symplectic embeddings, homotopy algebras and almost Poisson gauge symmetry

2021 ◽  
Author(s):  
Vladislav G Kupriyanov ◽  
Richard J Szabo
Keyword(s):  
Gauge Theories ◽  
Differential Forms ◽  
Poisson Manifold ◽  
New Approach ◽  
Gauge Sector ◽  
Gauge Transformations ◽  
Gauge Algebra ◽  
Gauge Symmetries ◽  
Noncommutative Gauge Theories ◽  
Differential Graded Poisson Algebras

Abstract We formulate general definitions of semi-classical gauge transformations for noncommutative gauge theories in general backgrounds of string theory, and give novel explicit constructions using techniques based on symplectic embeddings of almost Poisson structures. In the absence of fluxes the gauge symmetries close a Poisson gauge algebra and their action is governed by a $P_\infty$-algebra which we construct explicitly from the symplectic embedding. In curved backgrounds they close a field dependent gauge algebra governed by an $L_\infty$-algebra which is not a $P_\infty$-algebra. Our technique produces new all orders constructions which are significantly simpler compared to previous approaches, and we illustrate its applicability in several examples of interest in noncommutative field theory and gravity. We further show that our symplectic embeddings naturally define a $P_\infty$-structure on the exterior algebra of differential forms on a generic almost Poisson manifold, which generalizes earlier constructions of differential graded Poisson algebras, and suggests a new approach to defining noncommutative gauge theories beyond the gauge sector and the semi-classical limit based on $A_\infty$-algebras.

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