43 f(-p1) + f(-p2) → Z(→ b(p3) + b(p4)) + f(p5)

43.1 Z+ jet production, processes 41–43

These processes represent the production of a Z boson and a single jet, where the Z subsequently decays either into electrons (nproc=41), neutrinos (nproc=42) or bottom quarks (nproc=43). Where appropriate, the effect of a virtual photon is also included. The calculation may be performed at LO and NLO and NNLO[1] although the NLO, (NNLO) calculation of process 43 does not include radiation from the bottom quarks. The one-loop virtual amplitudes are taken from the appendix IV of ref. [2].

When removebr is true in process 41, the Z boson does not decay.

43.2 Plotter

nplotter_Zjets.f is the default plotting routine.

43.3 Example input and output file(s)

input43.ini process43.out

References

[1]    T. Neumann and J. Campbell, Fiducial Drell-Yan production at the LHC improved by transverse-momentum resummation at N4LL+N3LO, 2207.07056.

[2]    Z. Bern, L.J. Dixon and D.A. Kosower, One loop amplitudes for e+ e- to four partons, Nucl. Phys. B513 (1998) 3 [hep-ph/9708239].