1312 f(-p₁) + f(-p₂) → e^-(p₃) + e⁺(p₄) + ν(p₅) + ν(p₆), (gg only, (H + box) squared, sum over 3 ν’s)

This process calculable at leading order LO.

1312.1 e^-e⁺νν production, processes 1282, 1312, 1322

These processes compute cross sections relevant for the final state e^-e⁺νν, i.e. an electron pair and a sum over all three flavours of neutrino. For muon and tau neutrinos, only ZZ diagrams contribute. For electron neutrinos there are contributions from diagrams with resonant ZZ propagators and resonant WW propagators. Process 1282 only includes amplitudes containing a Higgs boson (c.f. processes 123 and 128). Process 1322 only includes continuum (box-diagram) amplitudes (c.f. processes 127 and 132). Process 1312 includes both amplitudes and the effects of the interference between them (c.f. processes 126 and 131)s. The effect of the interference between the WW and ZZ diagrams can be assessed by, for instance, comparing process 1282 with the sum of processes 123 and 128.ELNU.

Event generation is not available for these processes at present.

1312.2 e^-e⁺νν production, processes 1282, 1312, 1322

These processes compute cross sections relevant for the final state e^-e⁺νν, i.e. an electron pair and a sum over all three flavours of neutrino. For muon and tau neutrinos, only ZZ diagrams contribute. For electron neutrinos there are contributions from diagrams with resonant ZZ propagators and resonant WW propagators. Process 1282 only includes amplitudes containing a Higgs boson (c.f. processes 123 and 128). Process 1322 only includes continuum (box-diagram) amplitudes (c.f. processes 127 and 132). Process 1312 includes both amplitudes and the effects of the interference between them (c.f. processes 126 and 131).

1312.3 Plotter

nplotter˙ZZlept.f is the default plotting routine.

1312.4 Example input and output file(s)

input1312.ini process1312.out

References