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Peskin
Mar
2018

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2018:mar:peskin [2018/02/13 17:03]
127.0.0.1 external edit
2018:mar:peskin [2018/03/01 03:26] (current)
terning
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-=====  ​ael E. Peskin =====+=====  ​Michael ​E. Peskin =====
 ==== Extracting High-Precision Higgs Boson Couplings at the 250 GeV ILC ==== ==== Extracting High-Precision Higgs Boson Couplings at the 250 GeV ILC ====
  Mar. 13, 2018  Mar. 13, 2018
  
 {{2018:​mar:​peskin.pdf |pdf file}} {{2018:​mar:​peskin.mp4 |mp4 file}} {{2018:​mar:​peskin.pdf |pdf file}} {{2018:​mar:​peskin.mp4 |mp4 file}}


Abstract: The International Linear Collider at 250 GeV is expected to produce a sample of half a million Higgs bosons, tagged by recoil Z bosons, through the process e+e- -> Zh. Using this sample, it will be straightforward to measure Higgs branching ratios with high precision. However, we would like to do more -- determine the absolute strengths of Higgs boson couplings, measure the Higgs boson width, and test models of new physics beyond the Standard Model. This second step requires a theoretical framework, which, hopefully, should be as model-independent as possible. In this lecture, I will describe the analysis of this problem using Standard Model Effective Field Theory (EFT), the framework now used to discuss Higgs boson coupling strengths and other tests of the Standard Model at the LHC. It turns out that there is a beautiful synergy between the EFT formalism and the suite of observables available at the ILC that increases the power of both. I will present projections for Higgs coupling uncertainties at the ILC at 250 and 500 GeV and discuss the implications of these for the discovery of new physics through precision Higgs measurements.

Time: 4:10pm-5:10pm

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