5 ParamValues Class

Renata Kopecná edited this page 2022-01-28 11:36:39 +01:00

Table of Contents

• Table of Contents
• Structs
• struct FitValuesWithName
• struct SavedFitValues
• struct SavedFitValuesBackground
• Classes
• ParamValues: public SignalType, public BackgroundType
• Functions and their parameters:
• void ParamValues::printProperties()
• void ParamValues::SetParamValues()
• FitValuesWithName getSignalSavedFitValue()
• FitValuesWithName getBackgroundSavedFitValue()
• RooRealVar *ParamValues::getRooRealVar()
• void setSignalSavedFitValue()
• void setBackgroundSavedFitValue()
• void ParamValues::setValuesAndErrors()

The parameter intitial values are set in ParamValues::SetParamValues().

Table of Contents

• Structs
  • struct FitValuesWithName
  • struct SavedFitValues
  • struct SavedFitValuesBackground
• Classes
  • ParamValues: public SignalType, public BackgroundType
• Functions and their parameters:
  • void ParamValues::printProperties()
  • void ParamValues::SetParamValues()
  • FitValuesWithName getSignalSavedFitValue()
  • FitValuesWithName getBackgroundSavedFitValue()
  • RooRealVar *ParamValues::getRooRealVar()
  • void setSignalSavedFitValue()
  • void setBackgroundSavedFitValue()
  • void ParamValues::setValuesAndErrors()

Structs

struct FitValuesWithName

• Private members:
• Public members:
  • string name
  • double val
  • double err
• Functions:
  • *FitValuesWithName() //Default constructor
    • Parameters
      • string s_name
      • double d_val
      • double d_err
    • Return
      • Initialized FitValuesWithName

struct SavedFitValues

All values are initialized to their name as a string, value is set to 1.0, error is set to 1.0

• FitValuesWithName sig_mean
• FitValuesWithName sig_sigma
• FitValuesWithName sig_sigma2
• FitValuesWithName sig_alpha
• FitValuesWithName sig_alpha2
• FitValuesWithName sig_n
• FitValuesWithName sig_n2
• FitValuesWithName sig_f
• FitValuesWithName sig_effSigma

struct SavedFitValuesBackground

All values are initialized to their name as a string, value is set to 1.0, error is set to 1.0

• FitValuesWithName bkg_mean
• FitValuesWithName bkg_sigma
• FitValuesWithName bkg_decay
• FitValuesWithName bkg_alpha
• FitValuesWithName bkg_alpha2
• FitValuesWithName bkg_n
• FitValuesWithName bkg_n2
• FitValuesWithName bkg_f

Classes

ParamValues: public SignalType, public BackgroundType

• Protected members:
  • string latexName
  • double constrain
  • double fix
  • double ranges[2]
• Public members:
  • string name
  • double value
  • double error
• Functions:
  • ParamValues(){}; //default constructor
  • void SetParamValues(string s_string, bool fitRef=true)
  • RooRealVar *getRooRealVar(string s_name, bool sig, bool fitRef=true)
  • void ParamValues::printProperties()
  • void setValuesAndErrors(bool sig)
  • ~ParamValues(){}; //default destructor

Functions and their parameters:

void ParamValues::printProperties()

Prints the Name and LaTeX name of the parameter, whether it is fixed and/or constrained, its value and error and its range.

void ParamValues::SetParamValues()

This is where the initial values of the parameters are defined. They can be changed later on. In this function the latex names used for plotting are also set.

• Parameters
  • string s_string
  • bool fitRef

FitValuesWithName getSignalSavedFitValue()

Retrieves the signal-model parameter based on its name

• Parameters
  • string s_name
• Return
  • Returns the parameter specified by s_name

FitValuesWithName getBackgroundSavedFitValue()

Retrieves the background-model parameter based on its name

• Parameters
  • string s_name //This would have been so much nicer in Python
• Return
  • Returns the parameter specified by s_name

RooRealVar *ParamValues::getRooRealVar()

Creates an return a RooRealVar based on the parameter name. If the parameter is contrained, it also sets the gaussian constrains.

• Parameters
  • string s_name
  • bool sig
  • bool fitRef
• Return
  • New RooRealVar parameter created based on s_name

void setSignalSavedFitValue()

Rewrites the signal-model parameter value and error.

• Parameters
  • string s_name
  • double d_val
  • double d_err

void setBackgroundSavedFitValue()

Rewrites the background-model parameter value and error.

• Parameters
  • string s_name
  • double d_val
  • double d_err

void ParamValues::setValuesAndErrors()

Sets the RooVar parameter in order to get the value needed by the constrains. Parameter sig decides whether it is a parameter form the signal or background model.

• Parameters
  • bool sig