MatchboxTopMTScale implements the quadratic sum of the transverse masses of the top and antitop quark as a scale choice.
See also Herwig::MatchboxTopMTScale
Name: ShowerScaleMode Type: Switch
Description:
Choose the definition of the shower hard scale. Registered options:
1(FactorizationScale)
Use the factorization scale.
2(MeanMT2)
Use the mean squared transverse mass of the outgoing particles.