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- Little_Higgs abstract "In particle physics, little Higgs models are based on the idea that the Higgs boson is a pseudo-Goldstone boson arising from some global symmetry breaking at a TeV energy scale. The main goal of little Higgs models is to use the spontaneous breaking of such approximate global symmetries to stabilize the mass of the Higgs boson(s) responsible for electroweak symmetry breaking.Although the idea was first suggested in the 1970s, a viable model was only constructed by Nima Arkani-Hamed, Andy Cohen, and Howard Georgi in the spring of 2001. The idea was explored further by Nima Arkani-Hamed, Andy Cohen, Thomas Gregoire, and Jay Wacker in the spring of 2002. Also in 2002, several other papers appeared that refined the ideas of little Higgs theories, notably the Littlest Higgs by Nima Arkani-Hamed, Andy Cohen, Emmanuel Katz, and Ann Nelson.Little Higgs theories were an outgrowth of dimensional deconstruction. In these theories, the gauge group has the form of a direct product of several copies of the same factor, for example SU(2) × SU(2). Each SU(2) factor may be visualised as the SU(2) group living at a particular point along an additional dimension of space. Consequently, many virtues of extra-dimensional theories may be reproduced even though the little Higgs theory is 3+1-dimensional. The little Higgs models are able to predict a naturally-light Higgs particle.The main idea behind the little Higgs models is that the one-loop contribution to the tachyonic Higgs boson mass coming from the top quark cancels (the other one-loop contributions are small enough that they don't really matter; the top Yukawa coupling is huge (because related to its mass) and all the other Yukawa couplings and gauge couplings are small). The reason is that, simplifying, a loop is proportional to the coupling constant (following the example above) of one of the SU(2) groups. Because of the symmetries of the theory the contributions cancel until you have a two-loop contribution involving both groups. This protects the Higgs boson mass for about one order of magnitude, which is good enough to evade many of the precision electroweak constraints.In 2005 Martin Schmaltz and David Tucker-Smith posted on arXiv.org a pedagogical review on Little Higgs models.".
- Little_Higgs wikiPageID "1934262".
- Little_Higgs wikiPageLength "3759".
- Little_Higgs wikiPageOutDegree "21".
- Little_Higgs wikiPageRevisionID "705906821".
- Little_Higgs wikiPageWikiLink Andrew_G._Cohen.
- Little_Higgs wikiPageWikiLink Ann_Nelson.
- Little_Higgs wikiPageWikiLink ArXiv.
- Little_Higgs wikiPageWikiLink Category:Particle_physics.
- Little_Higgs wikiPageWikiLink Chiral_symmetry_breaking.
- Little_Higgs wikiPageWikiLink Conceptual_model.
- Little_Higgs wikiPageWikiLink David_Tucker-Smith.
- Little_Higgs wikiPageWikiLink Dimension.
- Little_Higgs wikiPageWikiLink Dimensional_deconstruction.
- Little_Higgs wikiPageWikiLink Direct_product_of_groups.
- Little_Higgs wikiPageWikiLink Extra_dimensions.
- Little_Higgs wikiPageWikiLink Gauge_theory.
- Little_Higgs wikiPageWikiLink Global_symmetry.
- Little_Higgs wikiPageWikiLink Higgs_boson.
- Little_Higgs wikiPageWikiLink Higgs_mechanism.
- Little_Higgs wikiPageWikiLink Howard_Georgi.
- Little_Higgs wikiPageWikiLink Littlest_Higgs.
- Little_Higgs wikiPageWikiLink Martin_Schmaltz.
- Little_Higgs wikiPageWikiLink Nima_Arkani-Hamed.
- Little_Higgs wikiPageWikiLink Particle_physics.
- Little_Higgs wikiPageWikiLink Yukawa_interaction.
- Little_Higgs wikiPageWikiLinkText "Little Higgs".
- Little_Higgs wikiPageWikiLinkText "little Higgs".
- Little_Higgs wikiPageUsesTemplate Template:Reflist.
- Little_Higgs wikiPageUsesTemplate Template:Which.
- Little_Higgs subject Category:Particle_physics.
- Little_Higgs hypernym Boson.
- Little_Higgs type Physic.
- Little_Higgs comment "In particle physics, little Higgs models are based on the idea that the Higgs boson is a pseudo-Goldstone boson arising from some global symmetry breaking at a TeV energy scale.".
- Little_Higgs label "Little Higgs".
- Little_Higgs sameAs Q10348465.
- Little_Higgs sameAs Pequeno_Higgs.
- Little_Higgs sameAs m.0676_k.
- Little_Higgs sameAs Q10348465.
- Little_Higgs wasDerivedFrom Little_Higgs?oldid=705906821.
- Little_Higgs isPrimaryTopicOf Little_Higgs.