A Little Twin Higgs Model

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We present a twin Higgs model based on left-right symmetry with a tree level quartic. This is made possible by extending the symmetry of the model to include two Z_2 parities, each of which is sufficient to protect the Higgs from getting a quadratically divergent mass squared. Although both parities are brokenexplicitly, the symmetries that protect the Higgs from getting a quadratically divergent mass are broken only collectively. The quadratic divergences of the Higgs mass are thus still protected at one loop. We find that the fine-tuning in this model is reduced substantially compared to the original left-right twin Higgs ... continued below

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Goh, Hock-Seng; Goh, Hock-Seng & Krenke, Christopher A. July 25, 2007.

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We present a twin Higgs model based on left-right symmetry with a tree level quartic. This is made possible by extending the symmetry of the model to include two Z_2 parities, each of which is sufficient to protect the Higgs from getting a quadratically divergent mass squared. Although both parities are brokenexplicitly, the symmetries that protect the Higgs from getting a quadratically divergent mass are broken only collectively. The quadratic divergences of the Higgs mass are thus still protected at one loop. We find that the fine-tuning in this model is reduced substantially compared to the original left-right twin Higgs model. This mechanism can also be applied to the mirror twin Higgs model to get a significant reduction of the fine-tuning, while keeping the mirror photon massless.

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  • Journal Name: Physical Review D; Journal Volume: 76; Related Information: Journal Publication Date: 27 December 2007

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  • Report No.: LBNL-482E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 934493
  • Archival Resource Key: ark:/67531/metadc902724

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  • July 25, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 30, 2016, 6:46 p.m.

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Goh, Hock-Seng; Goh, Hock-Seng & Krenke, Christopher A. A Little Twin Higgs Model, article, July 25, 2007; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc902724/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.