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bug in asymmetry fit with fixed background

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This commit is contained in:
nemu
2011-04-08 13:08:37 +00:00
parent 49619fcffb
commit abeaf81812
2 changed files with 16 additions and 2 deletions
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14
src/classes/PRunAsymmetry.cpp
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@ -554,6 +554,7 @@ Bool_t PRunAsymmetry::PrepareData()
}
}
}
// group histograms, add all the backward histograms to the one with backwardHistoNo[0]
for (UInt_t i=1; i<backwardHistoNo.size(); i++) {
for (UInt_t j=0; j<runData->GetDataBin(backwardHistoNo[i])->size(); j++) {
@ -634,10 +635,19 @@ Bool_t PRunAsymmetry::PrepareData()
*/
Bool_t PRunAsymmetry::SubtractFixBkg()
{
Double_t dval;
for (UInt_t i=0; i<fForward.size(); i++) {
fForwardErr.push_back(TMath::Sqrt(fForward[i]+fRunInfo->GetBkgFix(0) * fTimeResolution * 1.0e3));
if (fForward[i] != 0.0)
dval = TMath::Sqrt(fForward[i]);
else
dval = 1.0;
fForwardErr.push_back(dval);
fForward[i] -= fRunInfo->GetBkgFix(0) * fTimeResolution * 1.0e3; // bkg per ns -> bkg per bin; 1.0e3: us -> ns
fBackwardErr.push_back(TMath::Sqrt(fBackward[i]+fRunInfo->GetBkgFix(1) * fTimeResolution * 1.0e3));
if (fBackward[i] != 0.0)
dval = TMath::Sqrt(fBackward[i]);
else
dval = 1.0;
fBackwardErr.push_back(dval);
fBackward[i] -= fRunInfo->GetBkgFix(1) * fTimeResolution * 1.0e3; // bkg per ns -> bkg per bin; 1.0e3: us -> ns
}