13 f(-p₁) + f(-p₂) → W⁺(→ ν(p₃) + e⁺(p₄)) + c(p₅)

13.1 W + c production, processes 13,18

These processes represent the production of a W boson which subsequently decays leptonically, in association with a charm quark. This is produced at leading order by an initial state which contains a strange anti-quark (or Cabibbo suppressed d anti-quark) and a gluon, e.g d(-p₁) + g(p₂) → W⁺(→ ν(p₃) + e⁺(p₄)) + c(p₅) and u(-p₁) + g(p₂) → W⁺(→ ν(p₃) + e⁺(p₄)) + c(p₅) or the charge conjugate process for W^-. This process is somewhat analogous to single top production.

The effect of the charm quark mass is included throughout the calculation. The calculation of this process may be performed both at LO and NLO.

When removebr is true, the W boson does not decay.

13.2 Plotter

nplotter_Wbbmas.f is the default plotting routine.

13.3 Example input and output file(s)

input13.ini process13.out

References