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The Standard Model global fit to precision data is excellent. The Minimal Supersymmetric Standard Model can also fit the data well, though not as well as the Standard Model. At best, supersymmetric contributions either decouple or only…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jens Erler , Damien M. Pierce

We reemphasize the importance of discriminating fermion-loop and bosonic electroweak corrections in the analysis of electroweak precision data. Most recent data are indeed precise enough to require corrections beyond (trivial) fermion…

High Energy Physics - Phenomenology · Physics 2007-05-23 Dieter Schildknecht

It is shown that there exist nine different ways to describe the flavor mixing, in terms of three rotation angles and one CP-violating phase, within the standard electroweak theory of six quarks. For the assignment of the complex phase…

High Energy Physics - Phenomenology · Physics 2011-04-12 H. Fritzsch , Z. Z. Xing

The main purpose of this thesis is to discuss the impact of electroweak precision measurements on the present knowledge of particle physics, both in the framework of the Standard Model and of its most straightforward extensions. In Chapter…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Maltoni

We have performed an overall fit to the electroweak data with the generation blind $U(1)$ extension of the Standard Model. As input data for fitting we have included the asymmetry parameters, the particle decay widths of $Z$, neutrino…

High Energy Physics - Phenomenology · Physics 2011-01-25 K. Agashe , M. Graesser , Ian Hinchliffe , M. Suzuki

We present a comprehensive study of the electroweak interactions using the available Higgs and electroweak diboson production results from LHC Runs 1 and 2 as well as the electroweak precision data, in terms of the dimension-six operators.…

High Energy Physics - Phenomenology · Physics 2021-12-28 Eduardo da Silva Almeida , Alexandre Alves , Oscar J. P. Éboli , M. C. Gonzalez-Garcia

Electroweak precision data have been extensively used to constrain models containing physics beyond that of the Standard Model. When the model contains Higgs scalars in representations other than singlets or doublets, and hence rho not…

High Energy Physics - Phenomenology · Physics 2014-11-18 Mu-Chun Chen , Sally Dawson , Tadas Krupovnickas

With the full Tevatron data set collected and being analyzed, many new results have been recently released. This includes heavy flavor physics studies such as CP violation parameter measurements with B^{+/-} -> J/\psi K^{+/-} and B^{+/-} ->…

High Energy Physics - Experiment · Physics 2019-08-16 J. L. Holzbauer

We carry out high-precision calculation of parity violation in cesium atom, reducing theoretical uncertainty by a factor of two compared to previous evaluations. We combine previous measurements with our calculations and extract the weak…

High Energy Physics - Phenomenology · Physics 2010-04-21 S. G. Porsev , K. Beloy , A. Derevianko

The recent measurement by the CDF Collaboration of the $W$ boson mass is in significant tension with the Standard Model expectation, showing a discrepancy of seven standard deviations. A larger value of $m_W$ affects the global electroweak…

High Energy Physics - Phenomenology · Physics 2022-09-08 Linda M. Carpenter , Taylor Murphy , Matthew J. Smylie

We investigate the sensitivity to weakly interacting scalar dark matter from future determination of electroweak oblique parameters in the Circular Electron-Positron Collider (CEPC) project. As illuminating examples, three dark matter…

High Energy Physics - Phenomenology · Physics 2017-09-19 Chengfeng Cai , Zhao-Huan Yu , Hong-Hao Zhang

The present status of precision electroweak data is reviewed. These data include measurements of e+e- -> f+fbar, taken at the Z resonance at LEP, which are used to determine the mass and width of the Z boson. In addition, measurements have…

High Energy Physics - Phenomenology · Physics 2009-11-07 P. B. Renton

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…

High Energy Physics - Phenomenology · Physics 2011-07-19 G. Altarelli , R. Barbieri , F. Caravaglios

Precision probes of new physics are often interpreted through their indirect sensitivity to short-distance scales. In this proceedings contribution, we focus on the question of which precision observables, at current sensitivity levels,…

High Energy Physics - Phenomenology · Physics 2017-08-23 Matthias Le Dall

The Large Hadron Collider, LHC, though meant for discovery, will provide enough data from early phase to also perform various studies of Standard Model processes in as yet unexplored kinematic regions. Precision measurements of the…

High Energy Physics - Experiment · Physics 2008-09-10 Kajari Mazumdar

Partial top quark compositeness is a crucial aspect of theories with strong electroweak symmetry breaking. Together with the heavy top partners that lift the top quark mass to its observed value, these theories predict correlated…

High Energy Physics - Phenomenology · Physics 2020-10-28 Stephen Brown , Christoph Englert , Peter Galler , Panagiotis Stylianou

The electroweak corrections at the order of $O(\alpha_{ew}m_{t(b)}^2/m_W^2)$ to the partial widths of the $\tilde{t}_2 \to \tilde{g} + t$ and $\tilde{g} \to \tilde{t}_1 + \bar{t} $ decays (depending on the masses of the particles involved)…

High Energy Physics - Phenomenology · Physics 2015-06-25 Hou Hong-Sheng , Ma Wen-Gan , Wan Lang-Hui , Zhang Ren-You

The measurements of electroweak sector of the Standard Model are presented, including most recent results from LEP, Tevatron and HERA colliders. The robustness of the Standard Model is illustrated with the precision measurements, the…

High Energy Physics - Experiment · Physics 2009-11-11 Cristinel Diaconu

We present a survey of the most abundant processes at the LHC for sensitivity to electroweak corrections at \sqrt{s} = 8, 14, 33, and 100 TeV proton-proton collision energies. The processes studied are pp -> dijet, inclusive W and Z,…

Electroweak precision observables are fundamentally important for testing the standard model (SM) or its extensions. The influences to observables from new physics within the electroweak sector can be expressed in terms of oblique…

High Energy Physics - Phenomenology · Physics 2023-03-22 Yu Cheng , Xiao-Gang He , Fei Huang , Jin Sun , Zhi-Peng Xing
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