New perspective of spacetime from physics at TeV scale

2015 Fiscal Year Final Research Report

• Project Area: Particles Physics opening up the Tera-scale horizon using LHC
• Project/Area Number: 23104009
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka University
• Principal Investigator: Hosotani Yutaka 大阪大学, 理学(系)研究科(研究院), 教授 (50324744)
• Co-Investigator(Kenkyū-buntansha): LIM C. S. 東京女子大学, 現代教養学部, 教授 (80201870) ; ODA Kin-ya 大阪大学, 大学院理学研究科, 准教授 (60442943)
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 素粒子理論 / 余剰次元 / ヒッグスボゾン / ゲージヒッグス統合 / 細谷機構 / ヒッグスインフレーション

Outline of Final Research Achievements

What is the origin of the Higgs boson discovered at LHC? If our spacetime has more than four dimensions, the Higgs boson appears completely different from that in the standard model. We have proposed the gauge-Higgs unification scenario in which the four-dimensional Higgs boson is identified with the extra-dimensional component of the gauge potentials defined in five dimensions. Surprisingly the gauge-Higgs unification model yields almost the same phenomenology at low energies as the standard model. It predicts that new particles such as Z prime particles in the energy range 6 TeV to 8 TeV, which should be confirmed at 14 TeV LHC. The confirmation will support the existence of extra dimensions, hereby leading to the new vision and perspective of spacetime.

Free Research Field

素粒子理論