Generic signal models

The signal-like models (peaks):

Narrow signals :

• Gauss_pdf : simple Gauss
• CrystalBall_pdf : Crystal Ball function
• CrystalBallRS_pdf : right-side Crystal Ball function
• CB2_pdf : double-sided Crystal Ball function
• Needham_pdf : Needham function for J/psi or Upsilon fits
• Apolonios_pdf : Apolonios function
• Apolonios2_pdf : Apolonios function
• BifurcatedGauss_pdf : bifurcated Gaussian
• DoubleGauss_pdf : double Gaussian
• GenGaussV1_pdf : generalized Gaussian v1
• GenGaussV2_pdf : generalized Gaussian v2
• SkewGauss_pdf : _skewed Gaussian
• Bukin_pdf : generic Bukin PDF: skewed gaussian with exponential tails
• StudentT_pdf : Student` T-function
• BifurcatedStudentT_pdf : bifurcated Student` T-function
• SinhAsinh_pdf : Sinh-arcsinh distribution
• JohnsonSU_pdf : Jonhson-SU distribution
• Atlas_pdf , modified Gaussian with exponenital tails
• Slash_pdf , symmetric peak with very heavy tails
• RaisingCosine_pdf , Raising Cosine distribution
• QGaussian_pdf , Q-Gaussian distribution
• AsymmetricLaplace_pdf , asymmetric Laplace
• Sech_pdf , hyperboilic secant (inverse-cosh)
• Logistic_pdf , Logistic aka "sech-squared"

"Wide" peaks

These PDF are useful to describe wide peaks with the natural width. (Keep in miid that phase space corrections and resoltuion effect could be large)

• BreitWigner_pdf : (relativistic) 2-body Breit-Wigner
• Flatte_pdf : Flatte function (pipi)
• Flatte2_pdf : Flatte function (KK)
• LASS_pdf : kappa-pole
• Bugg_pdf : sigma-pole
• Swanson_pdf : Swanson`s S-wave cusp
• Voigt_pdf : Voigt-profile
• PseudoVoigt_pdf : PseudoVoigt-profile
• BW23L_pdf : BW23L