kDipAngle, // inverse cosine of the angle between daughter vector momenta
kCosThetaStar, // polarization angle
kAngleLeading, // angle to leading particle
+ kFirstDaughterPt, //pt of the first daughter of the pair
+ kSecondDaughterPt, //pt of the second daughter of the pair
+ kFirstDaughterP, //p of the first daughter of the pair
+ kSecondDaughterP, //p of the second daughter of the pair
kTypes // -- general limit ----------------------------------------------------------
};