Setup

• LHC @ 13 TeV
• PDF set: PDF4LHC21_40
• flavoured jet fastjet repos (all 4 algorithms will be provided here)
• Rivet analysis: https://github.com/DReichelt/LH23FlavAlgs

• GF = 1.16638e-5
• mW = 80.351971594491
• GW = 2.0842988936726
• mZ = 91.153480619183
• GZ = 2.4942663787728
• MH = ? (for WH)
• mb = ? (for WH)

NNLO (massless) and NLO+PS studies for Z+b and Z+c production (will adopt same selections cuts and binning for both processes).

• off-shell Z → mu+ mu-
• pT(Z) > 20 GeV (for generation cuts of event sample, to be jet-algo agnostic)
• central scale choice E_T(Z) = sqrt(m(mu+mu-)^2 + pT(mu+mu-)^2)
• mu+ & mu- with pT(mu) > 20 GeV, |y(mu)| < 2.4 and 71 GeV < m(mu+mu-) < 111 GeV

We will adapt the same analysis (selection cuts + histogram binning) as in the 8 TeV CMS measurement HEPData, Rivet. Note the additional “generation cut” ptz > 20 GeV and that we'll perform our study at 13 TeV.

Fixed-order NNLO predictions with and without bottom-quark masses. Idea: study how large the log(mb) are in different kinematic regimes and how differences in flavour tagging impact observables.

• IFN with alpha = 2 (→ omega = 1)
• GHS alpha = 1.0; beta = 1.0; zcut = 0.1; Rcut = 0.1; omega = 2.0;
• SDFlav with zcut = 0.1; beta = 1;
• CMP_Omega with a = 0.1