Results 1 to 10 of about 5,314,348 (335)

Standard Model Parameters and the Cosmological Constant [PDF]

Physical Review D, 2001
Simple functional relations amongst standard model couplings, including gravitional, are conjectured. Possible implications for cosmology and future theory are discussed.Comment: submitted to Physical Review
D. Easson, J. Bjorken, J. Bjorken, James D. Bjorken, M. Gell-Mann, P. Osland, W. Zimmermann, Y. Nambu   +7 more
core   +5 more sources

Trying to understand the Standard Model parameters [PDF]

Surveys in High Energy Physics, 2003
We stress the importance of the circa 20 parameters in the Standard Model, which are not fixed by the model but only determined experimentally, as a window to the physics beyond the Standard Model.
Buchmüller W, C.D. Froggatt*, Froggatt CD, H.B. Nielsen†   +3 more
core   +3 more sources

Dark matter detection, Standard Model parameters and Intermediate Scale Supersymmetry [PDF]

Journal of High Energy Physics, 2021
The vanishing of the Higgs quartic coupling at a high energy scale may be explained by Intermediate Scale Supersymmetry, where supersymmetry breaks at (109-1012) GeV.
David Dunsky, Lawrence J. Hall, Keisuke Harigaya   +2 more
doaj   +5 more sources

Complexity of chaotic fields and standard model parameters [PDF]

The Logic of Nature, Complexity and New Physics, 2007
In order to understand the parameters of the standard model of electroweak and strong interactions (coupling constants, masses, mixing angles) one needs to embed the standard model into some larger theory that accounts for the observed values. This means
Beck, Christian
core   +5 more sources

Basic Parameters and Some Precision Tests of the Standard Model [PDF]

Nuclear Physics B - Proceedings Supplements, 2002
We present a review of the masses (except for neutrino masses) and interaction strengths in the standard model. Special emphasis is put on quantities that have been determined with significantly improved precision in the last few years.
Bailey, Barbiellini, Becchi, Bethke, Bijnens, Billoire, Brambilla, Broadhurst, Brown, Chen, Chetyrkin, Chetyrkin, Chetyrkin, Chetyrkin, Chetyrkin, Commins, Coquereau, de Trocóniz, de Trocóniz, F.J Ynduráin, Fischler, Generalis, Gorishny, Gray, Groshny, Hoang, Hughes, Kaplan, Kinoshita, Krause, Larin, Larin, Leutwyler, Martin, Melnikov, Moch, Novikov, Novikov, Pascual, PDG, Peter, Pich, Pineda, Pineda, Retey, Santiago, Santiago, Schröder, Strom, Sugurladze, Sugurladze, Tarrach, Titard, van Ritbergen, Veltman, Vermaseren, Voloshin, Voloshin, Ynduráin, Ynduráin   +59 more
core   +4 more sources

SUSY threshold corrections to quark and lepton mixing inspired by SO (10) GUT models

Journal of High Energy Physics, 2020
In the standard model (SM), the Cabibbo-Kobayashi-Maskawa (CKM) matrix is the only origin of flavor violations (FVs). On the other hand, in general, there are a lot of sources of the FVs in a physics beyond the SM, through the diagonalizing matrices ...
Yu Muramatsu, Yoshihiro Shigekami
doaj   +1 more source

A low-scale flavon model with a ℤ N symmetry

Journal of High Energy Physics, 2020
We propose a model that explains the fermion mass hierarchy by the Froggatt-Nielsen mechanism with a discrete ℤ N F $$ {\mathrm{\mathbb{Z}}}_N^F $$ symmetry.
Tetsutaro Higaki, Junichiro Kawamura
doaj   +1 more source

The hadronic running of the electromagnetic coupling and the electroweak mixing angle from lattice QCD

Journal of High Energy Physics, 2022
We compute the hadronic running of the electromagnetic and weak couplings in lattice QCD with N f = 2 + 1 flavors of O $$ \mathcal{O} $$ (a) improved Wilson fermions.
Marco Cè, Antoine Gérardin, Georg von Hippel, Harvey B. Meyer, Kohtaroh Miura, Konstantin Ottnad, Andreas Risch, Teseo San José, Jonas Wilhelm, Hartmut Wittig   +9 more
doaj   +1 more source

Radiative muon mass models and (g − 2) μ

Journal of High Energy Physics, 2021
Recent measurements of the Higgs-muon coupling are directly probing muon mass generation for the first time. We classify minimal models with a one-loop radiative mass mechanism and show that benchmark models are consistent with current experimental ...
Michael J. Baker, Peter Cox, Raymond R. Volkas   +2 more
doaj   +1 more source

Quark Mass Models and Reinforcement Learning

Journal of High Energy Physics, 2021
In this paper, we apply reinforcement learning to the problem of constructing models in particle physics. As an example environment, we use the space of Froggatt-Nielsen type models for quark masses.
T. R. Harvey, A. Lukas
doaj   +1 more source