1321 f(-p₁) + f(-p₂) → e^-(p₃) + e⁺(p₄) + ν_e(p₅) + ν_e(p₆), (gg box squared)

This process calculable at leading order LO.

1321.1 e^-e⁺ν_eν_e production, processes 1281, 1311, 1321

These processes compute cross sections relevant for the final state e^-e⁺ν_eν_e, i.e. with charged leptons and neutrinos from the same (electron) doublet. As a result they receive contributions from diagrams with resonant ZZ propagators and resonant WW propagators. Process 1281 only includes amplitudes containing a Higgs boson (c.f. processes 123 and 128). Process 1321 only includes continuum (box-diagram) amplitudes (c.f. processes 127 and 132). Process 1311 includes both amplitudes and the effects of the interference between them (c.f. processes 126 and 131). The effect of the interference between the WW and ZZ diagrams can be assessed by, for instance, comparing process 1281 with the sum of processes 123 and one-third of 128.ELNU, where the weighting is to divide out the natural sum over three neutrino flavours in process 128.ELNU.

Event generation is not available for these processes at present.

1321.2 e^-e⁺ν_eν_e production, processes 1281, 1311, 1321

These processes compute cross sections relevant for the final state e^-e⁺ν_eν_e, i.e. with charged leptons and neutrinos from the same (electron) doublet. As a result they receive contributions from diagrams with resonant ZZ propagators and resonant WW propagators. Process 1281 only includes amplitudes containing a Higgs boson (c.f. processes 123 and 128). Process 1321 only includes continuum (box-diagram) amplitudes (c.f. processes 127 and 132). Process 1311 includes both amplitudes and the effects of the interference between them (c.f. processes 126 and 131).

1321.3 Plotter

nplotter_ZZlept.f is the default plotting routine.

1321.4 Example input and output file(s)

input1321.ini process1321.out

References