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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23 Sep 2004
TL;DR: In this article, it was shown that the flavor problem in theories with dynamical electroweak symmetry breaking can be effectively decoupled if the physics above the TeV scale is strongly conformal.
Abstract: We point out that the flavor problem in theories with dynamical electroweak symmetry breaking can be effectively decoupled if the physics above the TeV scale is strongly conformal, and the electroweak order parameter has a scaling dimension d = 1 + epsilon with epsilon \simeq 1/few There are many restrictions on small values of epsilon: for epsilon << 1, electroweak symmetry breaking requires a fine-tuning similar to that of the standard model; large-N conformal field theories (including those obtained from the AdS/CFT correspondence) require fine-tuning for d < 2; `walking technicolor' theories cannot have d < 2, according to gap equation analyses However, strong small-N conformal field theories with epsilon \simeq 1/few avoid all these constraints, and can give rise to natural dynamical electroweak symmetry breaking with a top quark flavor scale of order 10^{1/epsilon} TeV, large enough to decouple flavor Small-N theories also have an acceptably small Peskin-Takeuchi S parameter This class of theories provides a new direction for dynamical electroweak symmetry breaking without problems from flavor or electroweak precision tests A possible signal for these theories is a prominent scalar resonance below the TeV scale with couplings similar to a heavy standard model Higgs
183 citations
TL;DR: In this article, the electroweak Higgs boson is associated with the pseudo-Goldstone boson of broken scale invariance, thus resolving the hierarchy problem in a technically natural way.
183 citations
TL;DR: In this paper, the naturalness of electroweak symmetry breaking and baryogenesis in the next-to-minimal supersymmetric standard model (NMSSM) was studied.
183 citations
TL;DR: In this paper, high energy measurements of Drell-Yan at the LHC can serve as electroweak precision tests, which can surpass LEP already with 8 TeV data.
183 citations
TL;DR: In this article, the mass singularities derived from loop diagrams involving collinear virtual gauge bosons coupled to external legs are derived from the BRS invariance of the spontaneously broken electroweak gauge theory.
Abstract: We discuss the evaluation of the collinear single-logarithmic contributions to virtual electroweak corrections at high energies. More precisely, we prove the factorization of the mass singularities originating from loop diagrams involving collinear virtual gauge bosons coupled to external legs. We discuss, in particular, processes involving external longitudinal gauge bosons, which are treated using the Goldstone-boson equivalence theorem. The proof of factorization is performed within the 't Hooft–Feynman gauge at one-loop order and applies to arbitrary electroweak processes that are not mass-suppressed at high energies. As basic ingredients we use Ward identities for Green functions with arbitrary external particles involving a gauge boson collinear to one of these. The Ward identities are derived from the BRS invariance of the spontaneously broken electroweak gauge theory.
182 citations