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, a purely four-dimensional, two-sector effective field theory was proposed to capture the collider phenomenology of warped extra dimensions with bulk Standard Model fields, where the hierarchy problem is solved non-supersymmetrically.
Abstract: This is the first of two papers aimed at economically capturing the collider phenomenology of warped extra dimensions with bulk Standard Model fields, where the hierarchy problem is solved non-supersymmetrically. This scenario is related via the AdS/CFT correspondence to that of partial compositeness of the Standard Model. We present a purely four-dimensional, two-sector effective field theory describing the Standard Model fields and just their first Kaluza-Klein/composite excitations. This truncation, while losing some of the explanatory power and precision of the full higher-dimensional warped theory, greatly simplifies phenomenological considerations and computations. We describe the philosophy and explicit construction of our two-sector model, and also derive formulas for residual Higgs fine tuning and electroweak and flavor precision variables to help identify the most motivated parts of the parameter space. We highlight several of the most promising channels for LHC exploration. The present paper focusses on the most minimal scenario, while the companion paper addresses the even richer phenomenology of the minimal scenario of precision gauge coupling unification.
315 citations
TL;DR: In this paper, the authors discuss renormalisation-group improvement of the effective potential both in general and in the context of 0(N) scalar and the Standard Model and find that absolute stability of the electroweak vacuum implies that m11~ l.95m~ −189GeV, for a3(Mz) = 0.11.
314 citations
TL;DR: In this paper, the authors set the framework for a model-independent analysis of the data on electroweak precision tests, starting from three basic observables, the mass ratio m w / m z, the Z partial width and the forward-backward asymmetry for changed leptons, they define three dimensionless parameters ϵ 1, ϵ 2 and ϵ 3 which contain the snall radiative correction effects one is interested in, with large m t -effects only appearing in ϵ1.
314 citations
01 Apr 2013
TL;DR: In this article, leptogenesis in the context of type-II seesaw in the case in which in addition to the scalar electroweak triplet decays the lepton asymmetry is also induced by right-handed neutrino decays (mild hierarchical scenarios).
Abstract: We discuss leptogenesis in the context of type-II seesaw in the case in which in addition to the scalar electroweak triplet decays the lepton asymmetry is also induced by right-handed neutrino decays (mild hierarchical scenarios). We show that within this setup, depending on the relative sizes of the relevant parameters, one can identify three classes of generic models, each one with its own consequences for leptogenesis.
314 citations
TL;DR: The effect of electroweak fermion number violation in the early universe is to distribute a fermanion number excess over all the electroweak doublets as discussed by the authors, which can result in the production of heavy stable particles in numbers comparable to the number of baryons.
312 citations