Topic
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 paper, the authors compute the full two-loop electroweak corrections to the top-quark contribution Xt to the rare decays KL! 0, K +! +, and B! Xd;s in the Standard Model.
Abstract: The rare K ! decays play a central role in testing the Standard Model and its extensions. Upcoming experiments plan to measure the decay rates with high accuracy. Yet, unknown higher-order electroweak corrections result in a sizeable theory error. We remove this uncertainty by computing the full two-loop electroweak corrections to the top-quark contribution Xt to the rare decays KL! 0 , K + ! + , and B ! Xd;s in the Standard Model. The remaining theoretical uncertainty related to electroweak eects is now far below 1%. Finally we update the branching ratios to
249 citations
TL;DR: HELAC as mentioned in this paper is a FORTRAN-based package that is able to compute efficiently helicity amplitudes for arbitrary scattering processes within the standard electroweak theory, exploiting the virtues of the Dyson-Schwinger equations as compared to the traditional Feynman graph approach.
249 citations
TL;DR: In this paper, the effect of the radiative corrections on the l+l- invariant mass distribution, the cross section in the Z boson resonance region, and on the forward-backward asymmetry, A_FB, at the Fermilab Tevatron and the CERN Large Hadron Collider were investigated.
Abstract: We calculate the complete electroweak O(alpha) corrections to pp, pbar p -> l+l- X (l=e, mu) in the Standard Model of electroweak interactions. They comprise weak and photonic virtual one-loop corrections as well as real photon radiation to the parton-level processes q bar q -> gamma,Z -> l+l-. We study in detail the effect of the radiative corrections on the l+l- invariant mass distribution, the cross section in the Z boson resonance region, and on the forward-backward asymmetry, A_FB, at the Fermilab Tevatron and the CERN Large Hadron Collider. The weak corrections are found to increase the Z boson cross section by about 1%, but have little effect on the forward-backward asymmetry in the Z peak region. Threshold effects of the W box diagrams lead to pronounced effects in A_FB at m(l+l-) approx 160 GeV which, however, will be difficult to observe experimentally. At high di-lepton invariant masses, the non-factorizable weak corrections are found to become large.
249 citations
TL;DR: In this paper, it was shown that the neutral-current experiments determining H-neutral do not restrict mixing of U(1) × U(2)s in an electroweak SU(2,L × U (1)R ×U(1)(B−L)/2) gauge theory, and that there is a second Z in the range 70-110 GeV whose couplings to quarks and leptons are comparable to those of the Z with a mass of 95 GeV.
249 citations
TL;DR: In this paper, the authors consider higher-dimensional non-supersymmetric orbifold models where the Higgs field is identified with some internal component of a gauge field.
247 citations