220 f(-p1) + f(-p2) Z(e-(p3),e+(p4))Z(μ- (p5)+ (p6))) + f(p7) + f(p8), weak

220.1 e-e+νμνμ-pair production via WBF, processes 220,2201,222,2221

The weak processes (nproc=220,222) occur in O(α6), whereas the strong processes (nproc=2201,2221) occur in O(α4αS2). These processes can currently only be calculated at lowest order.

220  f (p1)+ f(p2) → Z(e- (p3),e+(p4))Z (μ - (p5),μ + (p6)))+ f(p7)+ f (p8),[W BF ]
222  f (p )+ f(p ) → Z(e- (p),e+(p ))Z (ν (p ),ν(p )))+ f(p )+ f(p )[W BF ]
        1      2       -  3  +  4    μ- 5  μ+ 6       7      8
2201 f (p1)+ f(p2) → Z(e (p3),e (p4))Z (μ  (p5),μ (p6))) +f (p7)+ f(p8)[strong]
2221 f (p1)+ f(p2) → Z(e- (p3),e+(p4))Z (νμ(p5),νμ(p6)))+ f(p7)+ f(p8)[strong]

220.2 Plotter

nplotter_qqZZqq.f is the default plotting routine.

220.3 Example input and output file(s)

input220.ini process220.out

References