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Possible fix for alpha problem for beta-NMR asymmetry calculation. To be tested.

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salman
2018-08-24 13:03:28 +02:00
parent e3d5d03fca
commit 3d773d8537
3 changed files with 21 additions and 21 deletions
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14
src/classes/PRunAsymmetryBNMR.cpp
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@ -222,19 +222,19 @@ Double_t PRunAsymmetryBNMR::CalcChiSquare(const std::vector<Double_t>& par)
break;
case 2: // alpha != 1, beta == 1
a = par[fRunInfo->GetAlphaParamNo()-1];
f = fTheory->Func(time, par, fFuncValues);
asymFcnValue = (f*(a+1.0)-(a-1.0))/((a+1.0)-f*(a-1.0));
f = fTheory->Func(time, par, fFuncValues)/2;
asymFcnValue = (f*(a+1.0)-(a-1.0))/((a+1.0)-f*(a-1.0)) - (-f*(a+1.0)-(a-1.0))/((a+1.0)+f*(a-1.0));
break;
case 3: // alpha == 1, beta != 1
b = par[fRunInfo->GetBetaParamNo()-1];
f = fTheory->Func(time, par, fFuncValues);
asymFcnValue = f*(b+1.0)/(2.0-f*(b-1.0));
f = fTheory->Func(time, par, fFuncValues)/2;
asymFcnValue = f*(b+1.0)/(2.0-f*(b-1.0))-f*(b+1.0)/(2.0+f*(b-1.0));
break;
case 4: // alpha != 1, beta != 1
a = par[fRunInfo->GetAlphaParamNo()-1];
b = par[fRunInfo->GetBetaParamNo()-1];
f = fTheory->Func(time, par, fFuncValues);
asymFcnValue = (f*(a*b+1.0)-(a-1.0))/((a+1.0)-f*(a*b-1.0));
f = fTheory->Func(time, par, fFuncValues)/2;
asymFcnValue = (f*(a*b+1.0)-(a-1.0))/((a+1.0)-f*(a*b-1.0))-(-f*(a*b+1.0)-(a-1.0))/((a+1.0)+f*(a*b-1.0));
break;
default:
asymFcnValue = 0.0;
@ -1276,7 +1276,7 @@ Bool_t PRunAsymmetryBNMR::PrepareViewData(PRawRunData* runData, UInt_t histoNo[2
efm = forwardmPacked.GetError()->at(i);
ebm = backwardmPacked.GetError()->at(i);
// check that there are indeed bins
if (fp+bp != 0.0)
if (fp+bp != 0.0)
asym = (alpha*fp-bp) / (alpha*beta*fp+bp) - (alpha*fm-bm) / (alpha*beta*fm+bm);
else
asym = 0.0;