QCD Dressed, Met EW - INFN - Torino Personal pages

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.}wo-loop~cay, ˜ štW, ’ “ ”, › œ|vemberToolsIntroduction & MotivationCalculation & Techniques Results & Discussion Summary & ConclusionCalculation GraphShot& package Techniques I...some diagrams contributing to the <strong>EW</strong> 2-loop correctionsgg ‘ H:LOtNLOt Z W tH • – — :LOt WfermionicbosonicNLOt WZWWtC SturmBrookhaven Forum, Terra Incognita: from LHC to Cosmology, No 7th, 2008T electroweak corrections to Higgs production and de at LHC 5ž
.¬ªwo-loopcay«vemberToolsIntroduction & MotivationCalculation & Techniques Results & Discussion Summary & ConclusionCalculation GraphShot& package Techniques II2-loop contributions are computed numerically:Diagrams: GraphShotS. Actis, A. Ferroglia, G. Passarino, M. Passera, C.S., S.UcciratiForm3 based package for automatic generation andmanipulation of 1- and 2-loop Feynman diagrams:insert Feynman-rules, perform traces, remove reduciblescalar products, symmetrize integrals, reduction, counter terms,renormalization,...UV-finite integrals classified into:s¢calar, vector and tensor type integrals¡mapped on form factors£Form factors are evaluated numerically in parametric spaceBefore num. integration: Cancel collinear sing.¥+ Study threshold¦ ¤ŸFor a moment consider § ¨ © H without loss of generalityC Sturm Brookhaven Forum, Terra Incognita: from LHC to Cosmology, No 7th, 2008T electroweak corrections to Higgs production and de at LHC 6®
Page 1 and 2: OutlinesWhen Higgs Production ¡ De
Page 3 and 4: OutlinesOutlines(1, 2,)1 From the a
Page 5 and 6: OutlinesOutlines(1, 2,)1 From the a
Page 7 and 8: Introduction & Motivationwo-loop→
Page 9 and 10: IntroductionWhat about EW? NLO for
Page 11 and 12: IntroductionStatusSynopsisFrom PO t
Page 13 and 14: IntroductionStatusSynopsisFrom PO t
Page 15: ToolsPart IIIntermezzoŽ
Page 19 and 20: ToolsPermutationsGenerating the Amp
Page 21 and 22: Tools=m 5p 2m 3m 4m 2m 1p 1@
Page 23 and 24: ToolsPolesC LogsAll-you-can-do-anal
Page 25 and 26: ToolsJJLast term integrate in x and
Page 27 and 28: ToolsMColl IIIExtracting Collinear
Page 29 and 30: ToolsMfTheorem IIGeneral results II
Page 31 and 32: ToolsMMMH‚‚‚‚‚RRRUVExtrac
Page 33 and 34: Tools‘MMNumerics ITasting numeric
Page 35 and 36: ToolsMMZ K t H 9 1B L : 9 K t H 1 K
Page 37 and 38: EW thresholds‰‰‰‰‰‰‰
Page 39 and 40: EW thresholdsMJfBubbles-behavior1§
Page 41 and 42: EW thresholdsµ ln W²²²µ 1· WC
Page 43 and 44: ¼¼Γ WΓ WΓ WΓ W= 2.093 GeV= 2.
Page 45 and 46: Complex polesÀNLOMSolutionsRM ¿ s
Page 47 and 48: Complex polesMM1 J1 JMCMSolutionsMC
Page 49 and 50: Complex polesMCM IISolutionspitfall
Page 51 and 52: Complex polesCMSolutionsCM scheme -
Page 53 and 54: ResultsÓÓEW on gluon-gluon fusion
Page 55 and 56: CM Û
Page 57 and 58: 10 WWÞßZZ86δ EW, light ferm.δ E
Page 59 and 60: ïòúýResultsêCorrections to gë
Page 61 and 62: More ResultsPart VIAllegro Con Brio
Page 63 and 64: More Results,LHCEW on K-factors - L
Page 65 and 66: More Results,TevatronEW on K-factor
Page 67 and 68:
# up{More Côorrections Resultsto g
Page 69 and 70:
FactorizationŠConclusionsFactoriza
Page 71 and 72:
FactorizationConclusionsFactorize o
Page 73 and 74:
Factorizationx Ž 1’ConclusionsFa
Page 75 and 76:
FactorizationApproximation is fair
Page 77:
FactorizationConclusionsConclusions
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