T2K CC0pi STV phase space bug

[Clarence Wret]

Stephen Dolan reckons the angular phase space cut in the T2K CC0pi STV code is wrong and is missing a cosine around the angle.

It reads

140   // mu phase space
141   if ((pmu.Vect().Mag() < 250) || (pnu.Vect().Angle(pmu.Vect()) < -0.6)) {
142     return false;
143   }
144 
145   // p phase space
146   if ((pp.Vect().Mag() < 250) || (pp.Vect().Mag() > 1E3) ||
147       (pnu.Vect().Angle(pp.Vect()) < 0.4)) {
148     return false;
149   }

Where I assume there should be a "cos" around line 141 angle and line 147.

Assigning to Luke for now