20 f(-p1) + f(-p2) → W+(→ ν(p3) + e+(p4)) + b(p5) + b(p6), (massive)

20.1 W + bb production, processes 20,25

This process is calculable at leading LO and next-to-leading order NLO. These processes represent the production of a W boson which subsequently decays leptonically, in association with a bb pair. The effect of the bottom quark mass is included throughout the calculation. This calculation may be performed at NLO, thanks to the incorporation of the virtual corrections from ref. [1]. When removebr is true, the W boson does not decay.

To select final states in which one of the b-quarks may be unobserved the user can employ processes 401-408 instead. These processes use the same matrix elements but make specific requirements on the kinematics of the b-quarks and QCD radiation.

20.2 Plotter

nplotter_Wbbmas.f is the default plotting routine.

20.3 Example input and output file(s)

input20.ini process20.out

References

[1]    S. Badger, J.M. Campbell and R.K. Ellis, QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations, JHEP 03 (2011) 027 [1011.6647].