Direct measurement of alpha_QED(mZ) at the FCC-ee [PDF]
, 2015 When the measurements from the FCC-ee become available, an improved determination of the standard-model "input" parameters will be needed to fully exploit the new precision data towards either constraining or fitting the parameters of beyond-the-standard-
Janot, Patrick
core +2 more sources
Possible relation between the cosmological constant and standard model parameters
Physical Review D, 2023 4 pages in double column format. 1 figure. V2: Further clarifications added, including a figure. V3: Minor changes. Accepted for publication in Phys. Rev. D.
Mark P. Hertzberg, Abraham Loeb
openaire +2 more sources
Using the R-Functions Theory Apparatus to Mathematically Model the Surface of the Soyuz-Appolo Spacecraft Mock-up for 3D Printing [PDF]
Journal of Mechanical Engineering, 2020 Creation of mathematical models of objects to be 3D printed is of considerable interest, which is associated with the active introduction of 3D printing in various industries.
Tetiana I. Sheiko +2 more
doaj +1 more source
The CKM phase and θ ¯ $$ \overline{\theta} $$ in Nelson-Barr models
Journal of High Energy Physics, 2021 We analyze the Nelson-Barr approach to the Strong CP Problem. We derive the necessary conditions in order to simultaneously reproduce the CKM phase and the quark masses.
Alessandro Valenti, Luca Vecchi
doaj +1 more source
Physics Beyond Standard Model in Neutron Beta Decay [PDF]
, 2011 Limits from neutron beta decay on parameters describing physics beyond the Standard Model are presented. New Physics is described by the most general Lorentz invariant effective Hamiltonian involving vector, scalar and tensor operators and Standard Model
Holeczek, Jacek +3 more
core +2 more sources
R K * $$ {R}_{K^{\left(*\right)}} $$ with leptoquarks and the origin of Yukawa couplings
Journal of High Energy Physics, 2018 We construct a model where the Yukawa couplings of the Standard Model (SM) fermions arise from the breaking of a Z 2 symmetry and through mixing with a fourth family of vector-like fermions.
Ivo de Medeiros Varzielas +1 more
doaj +1 more source
Tests of QED with Multi-Photonic Final States [PDF]
, 2001 In the Standard Model the process e+e- -> gamma-gamma is fully described by QED. Measurements of the differential cross-sections from the four LEP experiments are compared to the QED expectation and limits are set on parameters describing physics beyond ...
Sachs, K.
core +3 more sources
Renormalization group: New relations between the parameters of the Standard Model
Physics Letters B, 2017 We analyze the renormalization group equations for the Standard Model at the one and two loops levels. At one loop level we find an exact constant of evolution built from the product of the quark masses and the gauge couplings g1 and g3 of the U(1) and ...
S. Rebeca Juárez W. +3 more
doaj +1 more source
Symmetries and stabilisers in modular invariant flavour models
Journal of High Energy Physics, 2020 The idea of modular invariance provides a novel explanation of flavour mixing. Within the context of finite modular symmetries Γ N and for a given element γ ∈ Γ N , we present an algorithm for finding stabilisers (specific values for moduli fields τ γ ...
Ivo de Medeiros Varzielas +2 more
doaj +1 more source
Stability of the Higgs sector in a flavor-inspired multi-scale model
Journal of High Energy Physics, 2021 We analyze the stability of the Higgs sector of a three-site model with flavor-non-universal gauge interactions, whose spectrum of non-Standard-Model states spans three orders of magnitude.
Lukas Allwicher +2 more
doaj +1 more source