Measurement of Higgs Yukawa couplings with the ATLAS experiment
| Project/Area Number |
25400294
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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 | University of Tsukuba |
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Principal Investigator |
HARA Kazuhiko 筑波大学, 数理物質系, 准教授 (20218613)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | ヒッグス粒子 / 湯川結合 / LHC / ATLAS / タウレプトン / ボトムクォーク / タウ・レプトン対 / ボトム・クォーク対 / ヒッグスττ崩壊 / ヒッグスbb崩壊 / ヒッグス |
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| Outline of Final Research Achievements |
Whether the Higgs boson, discovered in 2012 at CERN/LHC, generates the masses to all particles as predicted by the Standard Model? We measured the Higgs Yukawa couplings using the 25/fb of data collected by LHC/ATLAS experiment to shed light on this question.
Paris of the heaviest lepton, tau, are found to be produced via Higgs at a rate μ=1.43+0.43-0.37 normalized by the Standard Model. This corresponds to a significance of 4.5σ and proves for the first time the existence of the Yukawa coupling for the lepton. For the quark, the search covered the production of b-quark pairs via Higgs. The significance was 1.4σ for this mode, and we require more statistics to answer to the question.
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Report
(4 results)
Research Products
(11 results)
