class AliPtMothFromPtDaugh: public TNamed

 Default constructor

 Named constructor

 Default destructor

 Copy constructor

 operator assignment

 Set mothers and daughters pdg codes if not
 Put a control if mothers histograms binning-size, rapidity (or pseudoapidity) range
 are setting. Read daughter histogram (histName) from the file (pathFileName)
 Initialize dimensions for correction factors

delete correction factors
delete histogram of daughters

Initialize daughter histograms with hist

 return a pointer of double which contains the binning size for (mothers) histograms:
 alpha have to be > 0 and:
 alpha = 1 equal binning size
 alpha < 1 increasing  " 
 alpha > 1 decreasing  "

 Set bin size for pt-spectrum of mothers using SetBinsSize:
 alpha have to be > 0 and:
 alpha = 1 equal binning size
 alpha < 1 increasing  " 
 alpha > 1 decreasing  "

set bin size given by the pointer edgeBins for pt-spectrum of mothers:
the dimension of the pointer edgeBins is nbins+1 and the points
has to be written in increasing order

set bin size given by the pointer edgeBins for ptMin-spectrum of mothers:
the dimension of the pointer edgeBins is nbins+1 and the points
has to be written in increasing order

 Set bin size for ptMin-spectrum of mothers using SetBinsSize:
 alpha have to be > 0 and:
 alpha = 1 equal binning size
 alpha < 1 increasing  " 
 alpha > 1 decreasing  "

 Set pdg codes of mothers given by the pointer pdgM for the analysis.
 This is a private method.

 Set user pdg codes of mothers: first check
 that the kUserAnalysis is the selected Analysis_mode.
 If not print out a message of error.

 Set pdg codes of beauty particles:
 B-mesons (1-24) B-barions (25-59)

 Set mothers and daughter pdg codes depending from the selected analysis.
 case kUserAnalysis: mothers and daughter are set by user (nothing to be done)
 case kBtoJPSI: inclusive B-> J/Psi + X channels
 case kBtoEle: inclusive B-> e + X channels
 case kBtoMuon: inclusive B-> mu + X channels
 case kBtoD0: inclusive B-> D0 + X channels

 return the binning size of the histogram hist
 n return the number of bins

 method to get the bounds of the pseudorapidity range
 for mothers. Return kTRUE if pseudorapidity is used and put
 pseudorapidity edges in etaMin and etaMax

 method to get the bounds of the pseudorapidity range
 for daughters. Return kTRUE if pseudorapidity is used and put
 pseudorapidity edges in etaMin and etaMax

 method to get the bounds of the rapidity range
 for mothers. Return kTRUE if rapidity is used and put
 rapidity edges in yMin and yMax

 method to get the bounds of the rapidity range
 for daughters. Return kTRUE if rapidity is used and put
 rapidity edges in yMin and yMax

 Set pdg code for daughter particle. Check
 that the kUserAnalysis is the selected Analysis_mode.
 If not print out a message of error.

 return the pointer to the array of pdg codes of mothers particles
 if it exist. Put its dimension in n_mothers

 Return value of correction factors Wij at the position i (pt-mothers bin index)-
 j (pt-daughter bin index). Bin 0 is the underflow, bin nbins+1 the overflow.
 If Wij don't exist or the indices i or j are out of the variability range return 0

 Return value of statistical error on correction factors Wij at the position
 i (pt-mothers bin index)- j (pt-daughter bin index). Bin 0 is the underflow,
 bin nbins+1 the overflow. If Wij don't exist or the indices i or j are out of the
 variability range return 0

 Return value of correction factors Fi at the position i (pt-mothers bin index).
 Bin 0 is the underflow, bin nbins+1 the overflow.
 If Fi don't exist or the index i is out of the variability range return 0

 Return statistical error on correction factors Fi at the position i (pt-mothers bin index).
 Bin 0 is the underflow, bin nbins+1 the overflow.
 If Fi don't exist or the index i is out of the variability range return 0

 Return value of correction factors Wij_min at the position i (ptMin-mothers bin index)-
 j (pt-daughter bin index). Bin 0 is the underflow, bin nbins+1 the overflow.
 If Wij_min don't exist or the indices i or j are out of the variability range return 0

 Return value of statistical error on correction factors Wij_min at the position
 i (ptMin-mothers bin index)- j (pt-daughter bin index). Bin 0 is the underflow,
 bin nbins+1 the overflow. If Wij_min don't exist or the indices i or j are out of the
 variability range return 0

 Return value of correction factors Fi_min at the position i (ptMin-mothers bin index).
 Bin 0 is the underflow, bin nbins+1 the overflow.
 If Fi_min don't exist or the index i is out of the variability range return 0

 Return statistical error on correction factors Fi_min at the position i (ptMin-mothers bin index).
 Bin 0 is the underflow, bin nbins+1 the overflow.
 If Fi_min don't exist or the index i is out of the variability range return 0

return kTRUE if pdgCode is in the list of pdg codes of mothers

 return kTRUE if particle part has the selected daughter
 if yes put the label of the track in labelDaugh

 Evaluated rapidity of particle  and put it in y. Return kFALSE if
 cannot compute rapidity

 Return the bin index of pt respect to the binning size of ptHist
 bin 0 is the underflow - nbins+1 is the overflow

 put a control for rapidity yD and transverse momentum ptD of daughter
 return kTRUE if  fyDaughMin < yD < fyDaughMax and ptMinDaugh < ptD < ptMaxDaugh

 Evaluate correction factors using to extract the ptRaw and
 ptMinRaw distributions. Statistical errors on those are computed too

 Evaluate acceptance correction factors that are applied on the
 raw distributions. Statistical errors on those are computed too

Apply the fWij and fWijMin on the daughter distribution
in order to evaluate the pt and ptMin raw distributions for mothers

 Evaluate the statistical error on the pt-mothers distribution.
 sigmaX: contribution that came from the measured distibution
 sigmaWij: contribution that came from the fWij factors
 sigmaFi: contribution that came from the fFi factors

 Evaluate statistical error on ptMin mothers distribution
 sigmaMinX: contribution that came from the measured distibution
 sigmaMinWij: contribution that came from the fWijMin factors
 sigmaMinFi: contribution that came from the fFiMin factors

 Evaluate pt and ptMin distribution for mothers
 First evaluate the sigma raw distribution by calling EvaluatePtMothRaw
 then evaluate the pt and ptMin mothers distribution.
 Statistical errors on those distributions are evaluated too.

 Write pt and ptMin histograms of mothers in a file
 with name fileOutName. Default name is "Mothers.root".

 setters

getters

 return pointers to pt and ptMin mothers histograms