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相关论文: Precision Electroweak Parameters and the Higgs Mas…

200 篇论文

We review the status of precision electroweak physics with particular emphasis on the extraction of the Higgs boson mass. Global fit results depend strongly on the used value for the hadronic contribution to alpha(M_Z). We emphasize,…

高能物理 - 唯象学 · 物理学 2009-10-31 Jens Erler , Paul Langacker

Precision measurements of electroweak observables provide stringent tests of the Standard Model structure and an accurate determination of its parameters. A brief overview of the present experimental status is presented. A more extensive…

高能物理 - 唯象学 · 物理学 2007-05-23 A. Pich

In the global fit of the Standard Model using Gfitter, electroweak precision observables as well as constraints from direct Higgs searches have been compared with state-of-the-art electroweak predictions. We use the most recent results for…

高能物理 - 唯象学 · 物理学 2019-08-14 Martin Goebel

I consider the low energy limit of Little Higgs models. The method consists in eliminating the heavy fields using their classical equations of motion in the infinite mass limit. After the elimination of the heavy degrees of freedom one can…

高能物理 - 唯象学 · 物理学 2007-05-23 Aldo Deandrea

We discuss the experimental and theoretical uncertainties on precision electroweak observables and their relationship to the indirect constraints on the Higgs-boson mass, $\MH$, in the Standard Model (SM). The critical experimental…

We compute the Higgs mass in a model for the electroweak interactions based on a confining theory. This model is related to the standard model by the complementarity principle. A dynamical effect due to the large typical scale of the Higgs…

高能物理 - 唯象学 · 物理学 2014-11-17 Xavier Calmet , Harald Fritzsch

Measurements at low energies provide interesting indirect information about masses of particles that are (so far) too heavy to be produced directly. Motivated by recent progress in consistently and rigorously calculating electroweak…

高能物理 - 唯象学 · 物理学 2008-11-26 O. Buchmueller , R. Cavanaugh , A. De Roeck , S. Heinemeyer , G. Isidori , P. Paradisi , F. J. Ronga , A. M. Weber , G. Weiglein

The global fit of the Standard Model predictions to electroweak precision data, which has been routinely performed in the past decades by several groups, led to the prediction of the top quark and the Higgs boson masses before their…

高能物理 - 唯象学 · 物理学 2019-05-01 Jens Erler , Matthias Schott

The study of electron-positron collisions at LEP, together with additional measurements from other experiments, in particular those at SLC and at the Tevatron, has allowed for tests of the electroweak Standard Model with unprecedented…

高能物理 - 唯象学 · 物理学 2009-11-10 Guido Altarelli , Martin W. Grunewald

The global electroweak fit of the Standard Model (SM) with Gfitter can be used to constrain yet unknown SM parameters, such as the Higgs mass, but also physics beyond the SM (BSM) via the formalism of oblique parameters. This paper presents…

高能物理 - 唯象学 · 物理学 2010-06-02 Johannes Haller , Gfitter group

Until recently precision electroweak computations were fundamentally uncertain due to lack of knowledge about the existence of the Standard Model Higgs boson and its mass. For this reason substantial calculational machinery had to be…

高能物理 - 唯象学 · 物理学 2014-08-13 James D. Wells , Zhengkang Zhang

The current status of electroweak physics results from LEP is reviewed. Particular emphasis is placed on the latest results on the properties of the Z and W bosons. The updated status of the global electroweak fit to the standard model and…

高能物理 - 实验 · 物理学 2007-05-23 F. Spano'

The observed Higgs boson mass and the naturalness argument leave us a narrow window for the soft mass spectrum in natural supersymmetry that can be studied through the electroweak precision tests (EWPTs). We divide the analysis into the…

高能物理 - 唯象学 · 物理学 2015-01-27 Sibo Zheng , Yao Yu

We derive the Lagrangian and Feynman rules up to bilinear scalar fields for the mixed Higgs-radion eigenstates interacting with Standard Model particles confined to a 3-brane in Randall-Sundrum warped geometry. We use the results to compute…

高能物理 - 唯象学 · 物理学 2009-11-10 J. F. Gunion , M. Toharia , J. Wells

We extract from data the parameters of the Higgs potential, the top Yukawa coupling and the electroweak gauge couplings with full 2-loop NNLO precision, and we extrapolate the SM parameters up to large energies with full 3-loop NNLO RGE…

In this review, we discuss methods of parsing direct and indirect information from collider experiments regarding the Higgs boson and describe simple ways in which experimental likelihoods can be consistently reconstructed and interfaced…

高能物理 - 唯象学 · 物理学 2013-03-20 Aleksandr Azatov , Jamison Galloway

1. Introduction 2. Status of the Data 3. Precision Electroweak Data and the Standard Model 4. A More General Analysis of Electroweak Data 4.1 Basic Definitions and Results 4.2 Experimental Determination of the Epsilon Variables 4.3…

高能物理 - 唯象学 · 物理学 2011-07-19 G. Altarelli , R. Barbieri , F. Caravaglios

This lecture discusses the Higgs boson sectors of the SM and the MSSM, in particular in view of the recently discovered particle at \sim 125.5 GeV. It also covers their connection to electroweak precision physics and the implications for…

高能物理 - 唯象学 · 物理学 2013-01-31 S. Heinemeyer

We perform a fit to precise electroweak data to determine the Higgs and top masses. Penalty functions taking into account their production limits are included. We find ${\displaystyle m_H=65^{+245}_{-4}\ GeV}$ and ${\displaystyle…

高能物理 - 唯象学 · 物理学 2009-10-22 F. del Aguila , M. Martinez , M. Quiros

We update our previous work on an analysis of the electroweak data by including new and partly preliminary data available up to the 1996 summer conferences. The new results on the Z partial decay widths into b and c hadrons now offer a…

高能物理 - 唯象学 · 物理学 2008-11-26 Kaoru Hagiwara , Dieter Haidt , Seiji Matsumoto