Proton structure at the LHC
作者： Nathan Philip Hartland
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摘要: A determination of Parton Distribution Functions (PDFs) from a global fit to dataset including measurements the LHC has been performed. The determinations have carried out according NNPDF methodology, leading minimising parametrisation bias and with an accurate account PDF uncertainty. In this thesis importance QCD at extraction are discussed, we summarise some technical difficulties in their inclusion into fits. number methods presented that permit efficient these observables determinations. Firstly Bayesian reweighting procedure taking advantage Monte Carlo representation uncertainties sets is which demonstrated by study impact early W production asymmetry ATLAS, CMS LHCb upon earlier set. package for fast computation automated NLO framework presented, providing interface between event generators interpolation tools. Finally, method combining evolution interpolating codes hadronic observable described. This largely overcomes computational performing perturbative predictions collider observables. applied PDFs vector boson data LHCb, ATLAS along inclusive jet ATLAS. closure testing introduced, methodology. improvements found minimisation stopping procedures, adopted development next release, NNPDF3.0.
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arxiv.org参考文章(240)
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