English
Related papers

Related papers: Precise Electroweak Measurements at the Z0 Pole

200 papers

We relate all $C$-- and $P$--invariant anomalous triple vector--boson couplings to the oblique electroweak parameters. LEP constraints on the latter then yield the strongest and most general simultaneous bounds to date on the former. Even…

High Energy Physics - Phenomenology · Physics 2008-02-03 Debajyoti Choudhury , Probir Roy , Rahul Sinha

In this conference report a summary is given on the recent theoretical work that has contributed to improve the theoretical predictions for testing the standard model in present and future experiments. Precision calculations for the $Z$…

High Energy Physics - Phenomenology · Physics 2008-02-03 W. Hollik

We review the origin of the standard electroweak model and discuss in great detail the on-shell renormalization scheme of the standard model as a field theory. One-loop radiative corrections are calculated by the dimensional regularization…

High Energy Physics - Phenomenology · Physics 2008-02-03 Kyungsik Kang , Sin Kyu Kang

We present an improved measurement of the left-right cross section asymmetry Alr for Z boson production by e+e- collisions. The measurement was performed at a center-of-mass energy of 91.28 GeV with the SLD detector at the SLAC Linear…

High Energy Physics - Experiment · Physics 2007-05-23 Eric Torrence , The SLD Collaboration

By running the prospective high-energy e^+e^- collider TESLA in the GigaZ mode on the Z resonance, experiments can be performed on the basis of more than 10^9 Z events. This will allow the measurement of the effective electroweak mixing…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. Heinemeyer , G. Weiglein

We present two new extractions of the QCD coupling constant at the Z pole, $\alpha_S(m_Z)$, from detailed comparisons of inclusive W and Z hadronic decays data to state-of-the-art perturbative Quantum Chromodynamics calculations at…

High Energy Physics - Phenomenology · Physics 2020-05-12 David d'Enterria , Villads Jacobsen

The global fit of the Standard Model to electroweak precision data, routinely performed by the LEP electroweak working groups and others, has been revisited in view of (i) the development of the new generic fitting package, Gfitter, (ii)…

High Energy Physics - Phenomenology · Physics 2019-08-14 Johannes Haller

Phenomenologically relevant electroweak precision pseudo-observables related to Z-boson physics are discussed in the context of the strong experimental demands of future $e^+e^-$ colliders. The recent completion of two-loop Z-boson results…

High Energy Physics - Phenomenology · Physics 2020-12-15 Ievgen Dubovyk , Ayres Freitas , Janusz Gluza , Krzysztof Grzanka , Tord Riemann , Johann Usovitsch

We have examined the electroweak radiative corrections in the LEP precision data in view of the new measurements of $M_W$ and $m_t$ as well as the recent progress in the higher order radiative corrections. From the minimal $\chi^2$-fit to…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kyungsik Kang , Sin Kyu Kang

We propose to probe the electroweak symmetry breaking sector by measuring the effective couplings of the top quark to gauge bosons. Using precision LEP data, we constrain the non--universal couplings of t-t-Z and t-b-W, parameterized by…

High Energy Physics - Phenomenology · Physics 2010-11-01 Ehab Malkawi , C. --P Yuan

We assess the impact of the very recent measurement of the top-quark mass by the CMS Collaboration on the fit of electroweak data in the Standard Model and beyond, with particular emphasis on the prediction for the mass of the W boson. We…

High Energy Physics - Phenomenology · Physics 2023-01-04 J. de Blas , M. Pierini , L. Reina , L. Silvestrini

In collaboration with G.D. Moore, the electroweak phase transition in the minimal supersymmetric standard model is studied using the two-loop effective potential. We make a comprehensive search of the MSSM parameter space consistent with…

High Energy Physics - Phenomenology · Physics 2007-05-23 James M. Cline

A global survey of weak mixing angle measurements at low and high energies is presented. Then I will discuss theoretical uncertainties in precision observables with special emphasis on their correlations. The important role of vacuum…

High Energy Physics - Phenomenology · Physics 2019-08-21 Jens Erler

A new analysis of the hadronic peak cross section at LEP 1 implies a small amount of missing invisible width in Z decays, while the effective weak charge in atomic parity violation has been determined recently to 0.6% accuracy, indicating a…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jens Erler , Paul Langacker

The experimental results presented at the XXXVI Rencontres de Moriond Electroweak Interactions and Unified Theories are summarized. The results range from possible evidence for the Standard Model Higgs boson at LEP2 to searches for new…

High Energy Physics - Experiment · Physics 2007-05-23 Gail G. Hanson

The first LHC run has confirmed the Standard Model as the correct theory at the electroweak scale, and the existence of a Higgs-like particle associated with the spontaneous breaking of the electroweak gauge symmetry. These lectures…

High Energy Physics - Phenomenology · Physics 2016-04-20 Antonio Pich

New preliminary electroweak results from the HERA lepton-proton collider experiments H1 and ZEUS are presented. These include new high Q^2 neutral current cross section measurements and limits on a possible quark radius, in the search for…

High Energy Physics - Experiment · Physics 2008-06-02 Ytsen de Boer

We study the impact of LEP2 constraints on the dimensionless coefficients of the electroweak chiral Lagrangian on the precision observables using the improved renormalization group equations. We find that the current uncertainty in the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sukanta Dutta , Kaoru Hagiwara , Qi-Shu Yan

The test of the electroweak corrections has played a major role in providing evidence for the gauge and the Higgs sectors of the Standard Model. At the same time the consideration of the electroweak corrections has given significant…

High Energy Physics - Phenomenology · Physics 2016-10-12 Riccardo Barbieri

We study the sensitivities of future precision Higgs measurements and electroweak observables in probing physics beyond the Standard Model. Using effective field theory--appropriate since precision measurements are indirect probes of new…

High Energy Physics - Phenomenology · Physics 2014-04-04 Brian Henning , Xiaochuan Lu , Hitoshi Murayama