309 f(-p1) + f(-p2) Z(3 * (ν(p3) + ν(p4))) + γ(p5) + f(p6) + f(p7)

309.1 Zγγj and Zγjj, 303, 304, 308 and 309

These processes are available at LO only. The Z∕γ* subsequently decays into either an e+e- pair (nproc=303,304) or neutrinos (nproc=308,309). Since these processes include a real photon and a jet, the cross section diverges when a photon or a jet is very soft or in the direction of the beam. Thus in order to produce sensible results, the input file must supply values for both gammptmin and gammrapmax, and ptjetmin and etajetmax. Moreover, when the parameters zerowidth and removebr are set to .false. the decay Z e-e+ (nproc=303, 304) will include photon radiation from both leptons, so that a non-zero R(γ,ℓ)min (Rgalmin) should also be supplied. This will ensure that the cross section is well-defined. Anomalous couplings are not currently implemented for these processes.

309.2 Plotter

nplotter_auto.f is the default plotting routine.

309.3 Example input and output file(s)

input309.ini process309.out