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2021:topics [2021/01/20 21:39] joey.huston [Session 1] |
2021:topics [2021/02/09 10:56] (current) fabrizio.caola [Session 1] |
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**__Techniques and calculations for SM phenomenology:__** | **__Techniques and calculations for SM phenomenology:__** | ||
- | ` * Calculations: | + | ` * Calculations: |
- | * expected precision for fundamental Standard Model processes at 14 and 100 TeV; what calculations are needed to match this precision? | + | * expected precision for fundamental Standard Model processes at 14 and 100 TeV; what calculations are needed to match this precision? |
- | * 2->3 at NNLO; status/challenges/prospects | + | * 2->3 at NNLO; status/challenges/prospects |
- | * theory uncertainties; more rigorous estimates? correlations? | + | * theory uncertainties; more rigorous estimates? correlations? |
- | * theoretically sound definition of FONLL at the differential level, beyond incl. cross sections? | + | * theoretically sound definition of FONLL at the differential level, beyond incl. cross sections? |
* PDFs: | * PDFs: | ||
Line 38: | Line 38: | ||
* MSbar vs on-shell | * MSbar vs on-shell | ||
* ttW; tension; can new calculations resolve it? | * ttW; tension; can new calculations resolve it? | ||
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- | * Monte Carlo: | ||
- | * improvements to ME+PS accuracy, both logarithmic and fixed order; benchmarking to understand the roles of each, testing of log-enhanced terms (using LEP data?); impact of power corrections, e.g. induced by recoil schemes | ||
- | * non-perturbative corrections; why are these uncertainties dominant in so many LHC analyses; can this situation be improved? | ||
- | * improving/extending NNLO+PS | ||
- | * review of EW parton showers/heavy gauge boson radiation, at LHC and 100 TeV; partial compensation of virtual EW Sudakov logs. | ||
* Jets: | * Jets: | ||
* flavor tagging of jets; matching what theorists can predict (IR safety) and what experimentalists can measure | * flavor tagging of jets; matching what theorists can predict (IR safety) and what experimentalists can measure | ||
+ | |||
+ | **__Monte Carlo:__** | ||
+ | |||
+ | * Non-perturbative uncertainties | ||
+ | * common hadronisation interface and variations | ||
+ | * theoretical understanding | ||
+ | * differences in tuned comparisons | ||
+ | * pheno impact for certain classes of processes (e.g. VBF/VBS) | ||
+ | * Shower accuracy studies | ||
+ | * comparing different schemes on higher orders, evaluate phenomenological impact | ||
+ | * Subleading colour and interplay with colour reconnection | ||
+ | * New sampling methods and algorithms versus machine learning techniques | ||
+ | * Accuracy of merging resummed calculation versus ME+PS paradigms | ||
+ | * Photon physics, modelling of fragmentation | ||
+ | * Heavy flavour matching | ||
+ | * review of existing measurements | ||
+ | * Connecting precision calculation, fragmentation and decays | ||
+ | * partons at 100 TeV | ||
+ | * Common LHC event bazaar | ||
+ | * Status and needs for electroweak corrections and radiation in shower algorithms | ||
+ | * Machine learning and adaptive Monte Carlo methods | ||
+ | |||
+ | |||
+ | **__SM Higgs Topics:__** | ||
+ | |||
+ | * ggF | ||
+ | * N3LO PDFs, small-x | ||
+ | * EW corrections | ||
+ | * cuts/differential distributions | ||
+ | * B-quark issues | ||
+ | * Ttbb, V+HF, VH | ||
+ | * 4FNS vs 5FNS: bbH, t/H/Z+j QCD EW… | ||
+ | * Flavour jet algo\ | ||
+ | * ggVV | ||
+ | * Massive results [if we’ll have them, probably yes] | ||
+ | * VBF | ||
+ | * Factor vs non-factor: TH vs EXP discussion on cuts etc (especially Run3) | ||
+ | * Jet-ology | ||
+ | * NNLO+NLO res, VH+J, NNLO+decay & fiducial studies | ||
+ | * HH | ||
+ | * EFTs, H vs HH | ||
+ | * In general, EFT fits etc | ||
+ | * Exp vs theory efficient information exchange | ||
+ | * Likelihood, discriminators as black box | ||
+ | * Differential distribution. TH insight for measurements… | ||
+ | * PS issues (SLC, higher logs…, liaise with QCD) | ||
+ | * New opportunity for Run3 (unexplored regions, != cuts etc) | ||
+ | * STXS | ||
+ | * for decays - binned proposal | ||
+ | * FO/Boosted | ||
+ | * NLO-Improved NNLO HTL predictions for gg → H(→yy)+Jet in the fiducial region, experimental sensitivity to different decay channels as a function of pt | ||
+ | * Mixed QCD-EW contributions to higgs (e.g. 2010.09451, 2007.09813) | ||
+ | * Backgrounds | ||
+ | * Predictions+uncertainty models for backgrounds to ttH production: tt+HF, ggH+HF, tt+V, previous proposal was to estimate ttV EW correction in different phase space regions | ||
+ | * 4FS/5FS | ||
+ | * bbar -> higgs (e.g. 2004.04752) | ||
+ | * tHj tZj QCD+EW (e.g. 2006.10086), various 4FS/5FS matching issues to consider | ||
+ | * Showers | ||
+ | * New showers, subleading-colour issues with parton showers and possible effects on Higgs physics (PanSccales 2011.10054; Forshaw, Plätzer et al 2003.06400, 2007.09648, 2011.15087, 2012.15215) | ||
+ | |||
+ | |||
==== Session 2 ==== | ==== Session 2 ==== | ||