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Electroweak interaction
About: Electroweak interaction is a research topic. Over the lifetime, 16333 publications have been published within this topic receiving 468927 citations. The topic is also known as: electroweak force.
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TL;DR: In this article, the authors present constraints on the Standard Model parameters using published and preliminary precision electroweak results measured at the electron-positron colliders LEP and SLC, compared with precise electroweak measurements from other experiments, notably CDF and D0 at the Tevatron.
Abstract: This note presents constraints on Standard Model parameters using published and preliminary precision electroweak results measured at the electron-positron colliders LEP and SLC. The results are compared with precise electroweak measurements from other experiments, notably CDF and D0 at the Tevatron. Constraints on the input parameters of the Standard Model are derived from the combined set of results obtained in high-Q{sup 2} interactions, and used to predict results in low-Q{sup 2} experiments, such as atomic parity violation, Moeller scattering, and neutrino-nucleon scattering. The main changes with respect to the experimental results presented in 2008 are new combinations of results on the W-boson mass and the mass of the top quark.
261 citations
TL;DR: In this article, the mixing of right-handed heavy Majorana neutrinos creates a CP-asymmetric universe, and when these Majorana Neutrinos subsequently decay more lepton than anti leptons are produced, the asymmetry is finally converted into baryon asymmetry during the electroweak phase transition.
259 citations
TL;DR: In this paper, a complete set of results for the scalar 4-point function appearing in one-loop calculations in QCD, QED, the electroweak Standard Model and popular extensions thereof is provided.
259 citations
TL;DR: In this paper, a new scenario for generating the baryon asymmetry in the universe within the framework of the inflationary cosmology was proposed, where decay of the weakly coupled inflaton field via the heavy Majorana neutrinos produces an asymmetry.
258 citations
TL;DR: In this article, an update of the Standard Model fit to electroweak precision data is presented, which includes new experimental results on the top-quark mass, W mass and width, and the Higgs-boson mass bounds from LEP, Tevatron and the LHC.
Abstract: We present an update of the Standard Model fit to electroweak precision data. We include newest experimental results on the top-quark mass, the W mass and width, and the Higgs-boson mass bounds from LEP, Tevatron and the LHC. We also include a new determination of the electromagnetic coupling strength at the Z pole. We find for the Higgs-boson mass $91^{+30}_{-23}~\mbox{GeV}$
and $120^{+12}_{-5}~\mbox{GeV}$
when not including and including the direct Higgs searches, respectively. From the latter fit we indirectly determine the W mass to be $(80.360^{+0.014}_{-0.013})~\mbox{GeV}$
. We exploit the data to determine experimental constraints on the oblique vacuum polarisation parameters, and confront these with predictions from the Standard Model (SM) and selected SM extensions. By fitting the oblique parameters to the electroweak data we derive allowed regions in the BSM parameter spaces. We revisit and consistently update these constraints for a fourth fermion generation, two Higgs doublet, inert Higgs and littlest Higgs models, models with large, universal or warped extra dimensions and technicolour. In most of the models studied a heavy Higgs boson can be made compatible with the electroweak precision data.
257 citations