2014 Fiscal Year Final Research Report
Electroweak symmetry breaking and new developments of flavor physics
| Project/Area Number |
23540283
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
BORZUMATI Francesca 東北大学, 国際教育院, 准教授 (50599719)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Keywords | 素粒子論 / 素粒子実験 / 超対称性 / ヒッグス粒子 / フレーバー物理 |
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| Outline of Final Research Achievements |
The discovery of the Higgs particle with the mass of 125 GeV has impacts on the understanding of the electroweak symmetry breaking and future developments of flavor physics. Within the framework of supersymmetric standard models, we considered viable models giving the observed Higgs particle mass and explored the effects to the flavor physics. In particular we investated an extension of the minimal version of the supersymmetric standard model by adding standard-model gauge singlets. It was shown that the tad-pole problem and others known as difficulties of the singlet extension can be solved by imposing the Peccei-Quinn symmetry. In addition, in a generic class of models with the gauge singlet, we found that the mixing between the singet and the doublet increases the Higgs particle mass to the experimentally measured value, and pointed out some intriguing experimental signatures characteristic to this scenario with some light sparticle.
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| Free Research Field |
素粒子論
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