Toward the origins of lepton flavour violation and SUSY breaking from analysis on vacuum structure

2014 Fiscal Year Final Research Report

• Project/Area Number: 23740190
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: University of Miyazaki (2014); Niigata University (2011-2013)
• Principal Investigator: SHIMOMURA Takashi 宮崎大学, 教育文化学部, 准教授 (00447278)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 超対称性 / 真空構造 / ヒッグス / レプトンフレーバーの破れ

Outline of Final Research Achievements

I have analyzed the vacuum structure of scalar potentials in supersymmetric models and showed the existance of some new vacua. Such new vacua include so-called false vacua on which the Universe we live is never realized. I derived the conditions to avoid the false vacua and gave new constraints on the parameters of supersymmetry breaking terms, Higgs mass terms and neutrino mass terms. Especially, based on latest data reported from the LHC experiment, I have analyzed the vacuum structure of the Next-to-Minimal Supersymmetric Standard Model implementing the Mirage mediation, which can explain the mass of the Higgs particle, and gave constraints on the supersymmetry breaking parameters.

Free Research Field

素粒子物理学