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Electroweak scale

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Electroweak scale
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{{Refimprove|date=June 2019}}In particle physics, the electroweak scale, also known as the Fermi scale, is the energy scale around 246 GeV, a typical energy of processes described by the electroweak theory. The particular number 246 GeV is taken to be the vacuum expectation value v = (G_F sqrt{2})^{-1/2} of the Higgs field (where G_F is the Fermi coupling constant). In some cases the term electroweak scale is used more loosely to refer to energies in a broad range around 100-1000 GeV.Interactions may have been above this scale during the electroweak epoch. In the unextended Standard Model, the transition from the electroweak epoch was not a first or a second order phase transition but a continuous crossover, preventing any baryogenesis.JOURNAL, Bergerhoff, Bastian, Wetterich, Christof, Electroweak Phase Transition in the Early Universe?, 1998, 211–240, 10.1007/978-94-011-5046-0_6,weblink 20 June 2019, Springer Netherlands, en, hep-ph/9611462, However many extensions to the standard model including supersymmetry and the inert double model have a first order electroweak phase transition (but still lack additional CP violation).

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