KaliVeda
Toolkit for HIC analysis
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KVImpactParameters::gamma_kernel Class Reference

Detailed Description

Fluctuation kernel using gamma distribution for use with bayesian_estimator.

The distribution of the observable \(X\) is given by the gamma distribution

\[ f(X) = \frac{1}{\Gamma(k)\theta^k} X^{k-1} \exp{(-X/\theta)} \]

with mean value \(k\theta\) and variance \(k\theta^2\).

Note
For this distribution, the reduced variance \(\sigma^2/\bar{X}\) can take any value \(>0\).

Definition at line 38 of file bayesian_estimator.h.

#include <bayesian_estimator.h>

Public Member Functions

double operator() (double X, double mean, double reduced_variance)
 

Member Function Documentation

◆ operator()()

double KVImpactParameters::gamma_kernel::operator() ( double  X,
double  mean,
double  reduced_variance 
)
inline

return probability of \(X\) for given mean value \(\bar{X}\) and reduced variance \(\sigma^2/\bar{X}\).

Definition at line 40 of file bayesian_estimator.h.