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 article, the authors study the low-energy phenomenology of the LHiggs model, and identify sources of the corrections to low energy observables, discuss model-dependent arbitrariness, and outline some possible directions of extensions of the model to evade the precision electroweak constraints.
Abstract: We study the low-energy phenomenology of the little Higgs model. We first discuss the linearized effective theory of the ``littlest Higgs model'' and study the low-energy constraints on the model parameters. We identify sources of the corrections to low-energy observables, discuss model-dependent arbitrariness, and outline some possible directions of extensions of the model in order to evade the precision electroweak constraints. We then explore the characteristic signatures to test the model in the current and future collider experiments. We find that the CERN LHC has great potential to discover the new $\mathrm{SU}(2)$ gauge bosons and the possible new $U(1)$ gauge boson to the multi-TeV mass scale. Other states such as the colored vectorlike quark T and doubly charged Higgs boson ${\ensuremath{\Phi}}^{++}$ may also provide interesting signals. At a linear collider, precision measurements on the triple gauge boson couplings could be sensitive to the new physics scale of a few TeV. We provide a comprehensive list of the linearized interactions and vertices for the littlest Higgs model in the appendices.
488 citations
TL;DR: Several major enhancements have been included into VBFNLO, including the implementation of anomalous gauge boson couplings has been extended to all triboson and VBF $VVjj processes, and semileptonic decay modes of the vector bosons are now available for many processes.
482 citations
TL;DR: The Higgs-boson mass used to be the only unknown input parameter of the electroweak contributions to the Standard Model as mentioned in this paper, but it has been replaced by the Higgs mass recently measured at the LHC.
Abstract: The Higgs-boson mass used to be the only unknown input parameter of the electroweak contributions to $(g\ensuremath{-}2{)}_{\ensuremath{\mu}}$ in the Standard Model. It enters at the two-loop level in diagrams with, e.g., top loops, $W$, or $Z$ exchange. We reevaluate these contributions, providing analytic expressions and exact numerical results for the Higgs-boson mass recently measured at the LHC. Our final result for the full Standard Model electroweak contributions is $(153.6\ifmmode\pm\else\textpm\fi{}1.0)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}$, where the remaining theory error comes from unknown three-loop contributions and hadronic uncertainties.
479 citations
473 citations
CERN1
TL;DR: In this paper, the authors generalize the analytical expressions for the two-loop leading-log neutral Higgs boson masses and mixing angles to the case of general left-and right-handed soft supersymmetry breaking stop and sbottom masses and left-right mixing mass parameters.
470 citations