Research of Higgs mechanism and search for New Physics using the 3rd generation quakrs

2017 Fiscal Year Final Research Report

• Project/Area Number: 26247038
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization (2015-2017); Osaka University (2014)
• Principal Investigator: Hanagaki Kazunori 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (40448072)
• Co-Investigator(Kenkyū-buntansha): 波場 直之 島根大学, 総合理工学研究科, 教授 (00293803) ; 山中 卓 大阪大学, 理学研究科, 教授 (20243157) ; 濱口 幸一 東京大学, 大学院理学系研究科(理学部), 准教授 (80431899)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: ヒッグス / 第3世代クォーク / 湯川結合 / シリコン検出器

Outline of Final Research Achievements

This research aims to reveal the mechanism of particle mass generation using the 3rd generation quarks as the probe. At the same time we searched for new physics beyond the Standard Model by conducting precise measurements of Higgs properties. We observed the direct couplings of Higgs to bottom quark and top quark, indicating that the mass of the 3rd generation quarks is generated by the Higgs mechanism as the massive gauge bosons, W and Z. In addition, the measurement of Higgs self-coupling is necessary to fully understand the Higgs mechanism and the shape of Higgs potential. In order to prepare for such self-coupling measurement, we developed silicon pixel detector for the future hadron collider experiment. The development went on smoothly as planned. The basic technical development is almost finished, and the phase moved into the mass production from the development.

Free Research Field

素粒子物理学実験