Angular momentum functions

Functions
int	Rivet::PID::jSpin (int pid)
	jSpin returns 2J+1, where J is the total spin
int	Rivet::PID::sSpin (int pid)
	sSpin returns 2S+1, where S is the spin
int	Rivet::PID::lSpin (int pid)
	lSpin returns 2L+1, where L is the orbital angular momentum

Detailed Description