TABLE OF CONTENTS
- 1. /distributions
- 1.1. distributions/gauss
- 1.2. distributions/novo
- 1.3. distributions/woods_saxon
- 1.4. distributions/bW
- 1.5. distributions/RelBW
- 1.6. distributions/BlattWeisskopf
/distributions [ Modules ]
NAME
module distributions
PURPOSE
This module contains various distribution functions:
- Gaussian
- Breit-Wigner, relativistic and non-relativistic
- Novosibirsk
- Woods-Saxon
- Blatt-Weisskopf
distributions/gauss [ Functions ]
[ Top ] [ distributions ] [ Functions ]
NAME
real function gauss (x, x0, w)
PURPOSE
Returns the value of the Gaussian distribution at x.
INPUTS
- real :: x --- the argument (where the function is evaluated)
- real :: x0 --- pole parameter
- real :: w --- width parameter
distributions/novo [ Functions ]
[ Top ] [ distributions ] [ Functions ]
NAME
real function novo (x, x0, s, t)
PURPOSE
Returns the value of the Novosibirsk distribution at x.
INPUTS
- real :: x --- the argument (where the function is evaluated)
- real :: x0 --- pole parameter
- real :: s --- width parameter sigma
- real :: t --- skewness parameter tau
distributions/woods_saxon [ Functions ]
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NAME
real function woods_saxon (x, f0, x0, dx)
PURPOSE
Returns the value of the Woods-Saxon distribution at x.
INPUTS
- real :: x --- the argument (where the function is evaluated)
- real :: f0 --- normalization constant, approximately equals the value at x=0
- real :: x0 --- 'radius' parameter
- real :: dx --- 'diffuseness' parameter
distributions/bW [ Functions ]
[ Top ] [ distributions ] [ Functions ]
NAME
real function bW(x,pole,width)
PURPOSE
Returns the value of the non-relativistic Breit-Wigner distribution at x with a given pole and width.
INPUTS
- real :: x, pole, width
distributions/RelBW [ Functions ]
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NAME
real function RelBW(x,pole,width)
NOTES
Returns the value of the relativistic Breit-Wigner distribution at x with a given pole and width.
INPUTS
- real :: x, pole, width
NOTES
Evaluates the spectral function of a particle with given mass and gamma at p^nu p_nu= x**2. Normalized to Integral(RelBW) from p**2=(0,infinity)GeV**2 = 1
distributions/BlattWeisskopf [ Functions ]
[ Top ] [ distributions ] [ Functions ]
NAME
real function BlattWeisskopf(x,l)
NOTES
Returns the function value of the Blatt-Weisskopf-Functions, which govern the momentum dependence of the width of a resonance decaying into AB. See e.g. Effenberger Dr. thesis, page 28
INPUTS
- real :: x -- = p_ab *R with p_ab = Relative Momentum of outgoing particles AB and R = Interaction-Radius
- integer :: l -- angular Momentum of outgoing particles AB