People: João Pires, Kostas Theofilatos, Joey Huston, Mario Campanelli … (add your name if you are interested)

Slides: scale choices

• decompose inclusive PT distributions to the sum of PT1, PT2, PT3, PT4+ (possible follow-up from the planned experimental measurements), (award is: bet of free coffee from Daniel Maitre)
• what about other scales HT/2
• cone size dependences
• Gregors Soyez suggestion for DR-informed scale varition for large and small anglularly separated jets (?) [to be further clarified]

• understand degree of scale cancellations in ratios of cross sections by comparing NLO predictions with corresponding NNLO ones, i.e. W+>=1 jet/Z+>=1 jet, H+>=1 jet/Z+>=1 jet at NLO and at NNLO, using same central scale and variations about that scale

• Ratios of cross sections; we can categorize situations where the choice of the same (or similar) scale for the numerator and denominator is warranted; in order of strength of validity -ratio of same cross section at different energies
• ratio of same cross section at different rapidities
• ratio of n/n-1 jet cross sections
• ratio of X+n jet/Y+ n jet, where X and Y are similar, i.e. W and Z
• ratio of X+n jet/Y+ n jet, where X and Y are dissimilar, i.e. W and H