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v3.3.5-pre
ggHZ production:
* POWHEG reweighting of events allows for arbitrary k_top vs k_Z (and k_b since 28Jul)
* fully differential NNLO calculation existing
-> also gg->qqZ->qqZH done (DY-like)
-> full NNLO (gg-like + DY-like) ratio to NLO different from NNLO DY-like alone at high pTH
tHq:
-> bbH neglected
-> Santander matching needed?
-> kappa might be inadequate here if there are light new particles; for cf=-1 what is the validity range of the EFT description as compared to the Q^2 probed by the analysis
-> k_top and k_W scanning
high-pT H:
-> long-distance (k_top) and kshort-distance (k_gluon)
-> b piece also needed for full differential distribution description
-> DOFs for mu_EXP(pTH) <-> mu_TH(ptH, TH_DOFs); this would probably just generalise k_glu from the form we have now of k_glu(mH, k_top, k_b) to
form-factor-like: k_glu(mH, pTH, k_top, k_b)
or
EFT-like: k_glu(mH, k_top, k_b, k_short-distance)
-> how light can a new particle be to be effectively integrated into the EFT k_short-distance parameter as function of pT?
-> whats the functional form of k_glu(mH, k_top, k_b, k_short-distance) as function of pT.
-> NLO/LO k-factor for H+1j in heavy top limit - uncertainty and accuracy?
-> in decay: same effect as in inclusive (integrated over pT or at pT=0?)
Off-shell:
NO consensus
Georg/Sven
-> Argued that it is not suited to kappa-treatment and should rather use full EFT or BSM benchmarks
-> Should we consider m4l as a differential observable? Yes, next talk.
Cacciapaglia
-> short-distance in gluglu loops: same as ptH talk but for on-peak vs off-peak. (Need merging?)
-> what is the functional form of k_glu(mVV, k_top, k_b, k_short-distance) as function of mVV
Salvioni
-> Linear => dim-4*dim-6, non-linear then also includes (dim-6)^2; discussion on dim-4*dim-8 and interference with (dim-6)^2.
-> Noted that EWK corrections will breakdown faster for very large mVV
-> k_short-distance can be one parameter if NP is heavy, but for light NP perhaps we need to have bin-by-bin k_short-distance.
-> Caveat on correlations between bins for mu(mVV or pTH).
Brainstorm:
-> In off shell, even if the k_glu is not well-defined, k_top and k_b should be well-defined across m(4l). If one combines k_top(on-peak) and k_top(off-peak) is another question.
- It is crucial to get the gluon fusion notation right. Propose that we tell everyone to call k_ggh{\inf} what they are now calling kg, since k_glu = k_top (+) k_ggH{\inf}.