2013 Fiscal Year Final Research Report
Precision physics of heavy quarks in the LHC era
| Project/Area Number |
23540281
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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 | Tohoku University |
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Principal Investigator |
SUMINO Yukinari 東北大学, 理学(系)研究科(研究院), 准教授 (80260412)
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| Project Period (FY) |
2011 – 2013
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| Keywords | LHC / heavy quark / top quark / spectroscopy |
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| Research Abstract |
We proposed the "weight function method" developed for precise measurements of particle's properties at LHC experiments. The advantages are as follows: (1)Only the energy distribution of a lepton included in the decay products is used, hence dependence on uncertainties of hadronization models and intial-state radiations is low; (2)Ideally the method is independent of particle's velocity distribution, hence effects of uncertainties in parton distribution functions and initial-state radiation are low. We first showed applicability of the method to the Higgs mass determination. Now we are developing method for reconstructing the top quark mass.
We also developed algorithms for computing higher-order radiative corrections. As an application, we completed computation of the next-to-next-to-next-to-leading order corrections to the heavy quarkonium spectrum.
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[Remarks] 集中講義, 於ドイツ・カールスルーエ大学" Understanding Interquark Force and Quark Masses in Perturbative QCD, "隅野行成, 2013.11.27-12.5.
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[Remarks] 集中講義, 於京都大学「摂動QCDに基づくクォーク間力とクォーク質量の理解」, 隅野行成, 2013.7.8-10.
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[Remarks] 集中講義, 於立教大学"Understanding Heavy Quark-AntiQuark System by Perturbative QCD, "隅野行成, 2012.11.29-30.
