Rivet::BWHelpers Namespace Reference

Functions
double	CDF (double x, double mu, double gamma)
	CDF for the Breit-Wigner distribution.
double	antiCDF (double p, double mu, double gamma)
	inverse CDF for the Breit-Wigner distribution

---

Function Documentation

double Rivet::BWHelpers::antiCDF	(	double	p,
		double	mu,
		double	gamma
	)		[inline]

inverse CDF for the Breit-Wigner distribution

Definition at line 247 of file MathUtils.hh.

Referenced by Rivet::BWspace().

                                                             {
      const double xn = std::tan(M_PI*(p-0.5));
      return gamma*xn + mu;
    }

double Rivet::BWHelpers::CDF	(	double	x,
		double	mu,
		double	gamma
	)		[inline]

CDF for the Breit-Wigner distribution.

Definition at line 240 of file MathUtils.hh.

Referenced by Rivet::BWspace().

                                                         {
      // normalize to (0;1) distribution
      const double xn = (x - mu)/gamma;
      return std::atan(xn)/M_PI + 0.5;
    }