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anghel |
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#include <iostream>
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#include <vector>
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#include "TMath.h"
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#include <string>
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#include <fstream>
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#include <vector>
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struct genInfo {
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genInfo(){nTight = 0; nLooseMinTight = 0;}
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int nTight;
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int nLooseMinTight;
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};
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struct sampleInfo {
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sampleInfo() {
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epsS = 0;
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DepsS = 0;
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MCinfo = genInfo();
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}
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double epsS;
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double DepsS;
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genInfo MCinfo;
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};
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struct outInfo {
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outInfo(){nSig = 0; nBkg = 0; errSig = 0; errBkg = 0;}
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double nSig;
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double nBkg;
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double errSig;
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double errBkg;
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};
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// The function for calculating teh quantities and their errors
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// N1 = loose minus tight ; N2 = tight
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outInfo mxCalculate(int N1, int N2, double epsSig, double DepsSig ,double epsBkg ,double DepsBkg){
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double a = 0.0;
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double b = 0.0;
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double c = 0.0;
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double d = 0.0;
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double e = 0.0;
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double f = 0.0;
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double g = 0.0;
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double h = 0.0;
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double DN1 = 0.0;
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double DN2 = 0.0;
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outInfo output;
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a = epsBkg*((epsBkg*(N1+N2))-N2)/((epsSig-epsBkg)*(epsSig-epsBkg));
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b = epsSig*(N2-(epsSig*(N1+N2)))/((epsSig-epsBkg)*(epsSig-epsBkg));
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c = -epsSig*epsBkg/(epsSig-epsBkg);
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d = epsSig*(1-epsBkg)/(epsSig-epsBkg);
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e = epsBkg*(N2-(epsBkg*(N1+N2)))/((epsSig-epsBkg)*(epsSig-epsBkg));
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f = epsSig*((epsSig*(N1+N2))-N2)/((epsSig-epsBkg)*(epsSig-epsBkg));
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g = epsBkg*epsSig/(epsSig-epsBkg);
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h = epsBkg*(epsSig-1)/(epsSig-epsBkg);
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DN1 = sqrt(N1);
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DN2 = sqrt(N2);
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output.nSig = epsSig*(N2-(epsBkg*(N1+N2)))/(epsSig-epsBkg);
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output.nBkg = epsBkg*((epsSig*(N1+N2))-N2)/(epsSig-epsBkg);
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output.errSig = sqrt((a*a*DepsSig*DepsSig)+(b*b*DepsBkg*DepsBkg)+(c*c*DN1*DN1)+(d*d*DN2*DN2));
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output.errBkg = sqrt((e*e*DepsSig*DepsSig)+(f*f*DepsBkg*DepsBkg)+(g*g*DN1*DN1)+(h*h*DN2*DN2));
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return output;
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}
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