1 //Author: Jeremy Wilkinson, jwilkinson@physi.uni-heidelberg.de
2 //Routine to extrapolate D meson cross sections using FONLL calculations
14 #include <TPaveText.h>
18 #include <TMultiGraph.h>
21 #include <TGraphAsymmErrors.h>
25 void TotalCharmCrossSection() {
27 // FONLL predictions from _pdf.rooT files
28 TFile *D0_05 = TFile::Open("D07TeV_FONLL_y0.5_pdf.root");
29 TFile *Dst_05 = TFile::Open("Dstar7TeV_FONLL_y0.5_pdf.root");
30 TFile *Dplus_05 = TFile::Open("Dplus7TeV_FONLL_y0.5_pdf.root");
32 TFile *D0_ally = TFile::Open("D07TeV_FONLL_y12_pdf.root");
33 TFile *Dst_ally = TFile::Open("Dstar7TeV_FONLL_y12_pdf.root");
34 TFile *Dplus_ally = TFile::Open("Dplus7TeV_FONLL_y12_pdf.root");
36 //Spectra for error propagation
37 TFile *specD0 = TFile::Open("HFPtSpectrum_D0Kpi_combinedFD_rebinnedth_150311_newsigma_7TeV.root");
38 TFile *specDst = TFile::Open("HFPtSpectrum_DstarD0pi_combineFD_rebinnedth_newnorm_120311.root");
39 TFile *specDplus = TFile::Open("HFPtSpectrum_DplusKpipi_combinedFD_150311_newsigma_7TeV.root");
41 TH1F *hD0stat = (TH1F*)specD0->Get("histoSigmaCorr");
42 TH1F *hDststat = (TH1F*)specDst->Get("histoSigmaCorr");
43 TH1F *hDplusstat = (TH1F*)specDplus->Get("histoSigmaCorr");
46 //Initialising the histo arrays
47 TH1F **histosD0_ally, **histosD0_05, **histosDst_ally, **histosDst_05, **histosDplus_ally, **histosDplus_05;
49 histosD0_ally = new TH1F*[11];
50 histosD0_05 = new TH1F*[11];
51 histosDst_ally = new TH1F*[11];
52 histosDst_05 = new TH1F*[11];
53 histosDplus_ally = new TH1F*[11];
54 histosDplus_05 = new TH1F*[11];
57 //Getting all the necessary histos for extrapolation ratios
59 histosD0_ally[0] = (TH1F*)D0_ally->Get("FONLL_central_prediction");
60 histosD0_ally[1] = (TH1F*)D0_ally->Get("FONLL_fr55_prediction");
61 histosD0_ally[2] = (TH1F*)D0_ally->Get("FONLL_fr22_prediction");
62 histosD0_ally[3] = (TH1F*)D0_ally->Get("FONLL_fr21_prediction");
63 histosD0_ally[4] = (TH1F*)D0_ally->Get("FONLL_fr12_prediction");
64 histosD0_ally[5] = (TH1F*)D0_ally->Get("FONLL_fr15_prediction");
65 histosD0_ally[6] = (TH1F*)D0_ally->Get("FONLL_fr51_prediction");
66 histosD0_ally[7] = (TH1F*)D0_ally->Get("FONLL_minmass_prediction");
67 histosD0_ally[8] = (TH1F*)D0_ally->Get("FONLL_maxmass_prediction");
68 histosD0_ally[9] = (TH1F*)D0_ally->Get("FONLL_minpdf_prediction");
69 histosD0_ally[10] = (TH1F*)D0_ally->Get("FONLL_maxpdf_prediction");
71 histosD0_05[0] = (TH1F*)D0_05->Get("FONLL_central_prediction");
72 histosD0_05[1] = (TH1F*)D0_05->Get("FONLL_fr55_prediction");
73 histosD0_05[2] = (TH1F*)D0_05->Get("FONLL_fr22_prediction");
74 histosD0_05[3] = (TH1F*)D0_05->Get("FONLL_fr21_prediction");
75 histosD0_05[4] = (TH1F*)D0_05->Get("FONLL_fr12_prediction");
76 histosD0_05[5] = (TH1F*)D0_05->Get("FONLL_fr15_prediction");
77 histosD0_05[6] = (TH1F*)D0_05->Get("FONLL_fr51_prediction");
78 histosD0_05[7] = (TH1F*)D0_05->Get("FONLL_minmass_prediction");
79 histosD0_05[8] = (TH1F*)D0_05->Get("FONLL_maxmass_prediction");
80 histosD0_05[9] = (TH1F*)D0_05->Get("FONLL_minpdf_prediction");
81 histosD0_05[10] = (TH1F*)D0_05->Get("FONLL_maxpdf_prediction");
83 histosDst_ally[0] = (TH1F*)Dst_ally->Get("FONLL_central_prediction");
84 histosDst_ally[1] = (TH1F*)Dst_ally->Get("FONLL_fr55_prediction");
85 histosDst_ally[2] = (TH1F*)Dst_ally->Get("FONLL_fr22_prediction");
86 histosDst_ally[3] = (TH1F*)Dst_ally->Get("FONLL_fr21_prediction");
87 histosDst_ally[4] = (TH1F*)Dst_ally->Get("FONLL_fr12_prediction");
88 histosDst_ally[5] = (TH1F*)Dst_ally->Get("FONLL_fr15_prediction");
89 histosDst_ally[6] = (TH1F*)Dst_ally->Get("FONLL_fr51_prediction");
90 histosDst_ally[7] = (TH1F*)Dst_ally->Get("FONLL_minmass_prediction");
91 histosDst_ally[8] = (TH1F*)Dst_ally->Get("FONLL_maxmass_prediction");
92 histosDst_ally[9] = (TH1F*)Dst_ally->Get("FONLL_minpdf_prediction");
93 histosDst_ally[10] = (TH1F*)Dst_ally->Get("FONLL_maxpdf_prediction");
96 histosDst_05[0] = (TH1F*)Dst_05->Get("FONLL_central_prediction");
97 histosDst_05[1] = (TH1F*)Dst_05->Get("FONLL_fr55_prediction");
98 histosDst_05[2] = (TH1F*)Dst_05->Get("FONLL_fr22_prediction");
99 histosDst_05[3] = (TH1F*)Dst_05->Get("FONLL_fr21_prediction");
100 histosDst_05[4] = (TH1F*)Dst_05->Get("FONLL_fr12_prediction");
101 histosDst_05[5] = (TH1F*)Dst_05->Get("FONLL_fr15_prediction");
102 histosDst_05[6] = (TH1F*)Dst_05->Get("FONLL_fr51_prediction");
103 histosDst_05[7] = (TH1F*)Dst_05->Get("FONLL_minmass_prediction");
104 histosDst_05[8] = (TH1F*)Dst_05->Get("FONLL_maxmass_prediction");
105 histosDst_05[9] = (TH1F*)Dst_05->Get("FONLL_minpdf_prediction");
106 histosDst_05[10] = (TH1F*)Dst_05->Get("FONLL_maxpdf_prediction");
108 histosDplus_ally[0] = (TH1F*)Dplus_ally->Get("FONLL_central_prediction");
109 histosDplus_ally[1] = (TH1F*)Dplus_ally->Get("FONLL_fr55_prediction");
110 histosDplus_ally[2] = (TH1F*)Dplus_ally->Get("FONLL_fr22_prediction");
111 histosDplus_ally[3] = (TH1F*)Dplus_ally->Get("FONLL_fr21_prediction");
112 histosDplus_ally[4] = (TH1F*)Dplus_ally->Get("FONLL_fr12_prediction");
113 histosDplus_ally[5] = (TH1F*)Dplus_ally->Get("FONLL_fr15_prediction");
114 histosDplus_ally[6] = (TH1F*)Dplus_ally->Get("FONLL_fr51_prediction");
115 histosDplus_ally[7] = (TH1F*)Dplus_ally->Get("FONLL_minmass_prediction");
116 histosDplus_ally[8] = (TH1F*)Dplus_ally->Get("FONLL_maxmass_prediction");
117 histosDplus_ally[9] = (TH1F*)Dplus_ally->Get("FONLL_minpdf_prediction");
118 histosDplus_ally[10] = (TH1F*)Dplus_ally->Get("FONLL_maxpdf_prediction");
120 histosDplus_05[0] = (TH1F*)Dplus_05->Get("FONLL_central_prediction");
121 histosDplus_05[1] = (TH1F*)Dplus_05->Get("FONLL_fr55_prediction");
122 histosDplus_05[2] = (TH1F*)Dplus_05->Get("FONLL_fr22_prediction");
123 histosDplus_05[3] = (TH1F*)Dplus_05->Get("FONLL_fr21_prediction");
124 histosDplus_05[4] = (TH1F*)Dplus_05->Get("FONLL_fr12_prediction");
125 histosDplus_05[5] = (TH1F*)Dplus_05->Get("FONLL_fr15_prediction");
126 histosDplus_05[6] = (TH1F*)Dplus_05->Get("FONLL_fr51_prediction");
127 histosDplus_05[7] = (TH1F*)Dplus_05->Get("FONLL_minmass_prediction");
128 histosDplus_05[8] = (TH1F*)Dplus_05->Get("FONLL_maxmass_prediction");
129 histosDplus_05[9] = (TH1F*)Dplus_05->Get("FONLL_minpdf_prediction");
130 histosDplus_05[10] = (TH1F*)Dplus_05->Get("FONLL_maxpdf_prediction");
132 //Output file for extrap. ratios
134 ofstream outD0("outputD0.txt"), outDst("outputDst.txt"), outDplus("outputDplus.txt");
136 //Initialise doubles for max, min, central for each meson
137 Double_t ratscalmaxD0 = 0, ratscalminD0 = 9999, ratscalmaxDst = 0, ratscalminDst = 9999, ratscalmaxDplus = 0, ratscalminDplus = 9999,ratmassmaxD0 = 0, ratmassminD0 = 9999, ratmassmaxDst = 0, ratmassminDst = 9999, ratmassmaxDplus = 0, ratmassminDplus = 9999, ratpdfmaxD0 = 0, ratpdfminD0 = 9999, ratpdfmaxDst = 0, ratpdfminDst = 9999, ratpdfmaxDplus = 0, ratpdfminDplus = 9999, ratD0cent, ratDstcent, ratDpluscent,
138 ratD0[11], ratDst[11], ratDplus[11];
141 //Central value is with central parameters
142 ratD0cent = histosD0_ally[0]->Integral("width")/histosD0_05[0]->Integral(21,120,"width");
143 ratDstcent = histosDst_ally[0]->Integral("width")/histosDst_05[0]->Integral(21,120,"width");
144 ratDpluscent = histosDplus_ally[0]->Integral("width")/histosDplus_05[0]->Integral(21,120,"width");
146 outD0 << "Name\tpT\ty\toverall\n";
147 outDst << "Name\tpT\ty\toverall\n";
148 outDplus << "Name\tpT\ty\toverall\n";
151 //Determining maximum and minimum ratios, and writing all ratios to file for later analysis
152 for (Int_t i = 0; i<=10; i++) {
154 ratD0[i] = histosD0_ally[i]->Integral("width")/histosD0_05[i]->Integral(21,120,"width");
156 //Scale variation for histos between i=1 and i=6
157 if (ratD0[i] > ratscalmaxD0 && 0 <= i <= 6) {ratscalmaxD0 = ratD0[i];}
158 if (ratD0[i] < ratscalminD0 && 0 <= i <= 6) {ratscalminD0 = ratD0[i];}
160 //Mass variation for 0, 7, 8
161 if (ratD0[i] > ratmassmaxD0 && (i == 0 || i == 7 || i == 8)) {ratmassmaxD0 = ratD0[i];}
162 if (ratD0[i] < ratmassminD0 && (i == 0 || i == 7 || i == 8)) {ratmassminD0 = ratD0[i];}
164 //PDF uncertainty is 0, 9 and 10
165 if (ratD0[i] > ratpdfmaxD0 && (i == 0 || i == 9 || i == 10)) {ratpdfmaxD0 = ratD0[i];}
166 if (ratD0[i] < ratpdfminD0 && (i == 0 || i == 9 || i == 10)) {ratpdfminD0 = ratD0[i];}
168 outD0 << histosD0_05[i]->GetName() << '\t'
169 << histosD0_05[i]->Integral("width")/histosD0_05[i]->Integral(21,120,"width") << '\t'
170 << histosD0_ally[i]->Integral("width")/histosD0_05[i]->Integral("width") << '\t'
173 ratDst[i] = histosDst_ally[i]->Integral("width")/histosDst_05[i]->Integral(21,120,"width");
174 if (ratDst[i] > ratscalmaxDst && 0 <= i <= 6) {ratscalmaxDst = ratDst[i];}
175 if (ratDst[i] < ratscalminDst && 0 <= i <= 6) {ratscalminDst = ratDst[i];}
177 if (ratDst[i] > ratmassmaxDst && (i == 0 || i == 7 || i == 8)) {ratmassmaxDst = ratDst[i];}
178 if (ratDst[i] < ratmassminDst && (i == 0 || i == 7 || i == 8)) {ratmassminDst = ratDst[i];}
180 if (ratDst[i] > ratpdfmaxDst && (i == 0 || i == 9 || i == 10)) {ratpdfmaxDst = ratDst[i];}
181 if (ratDst[i] < ratpdfminDst && (i == 0 || i == 9 || i == 10)) {ratpdfminDst = ratDst[i];}
183 outDst << histosDst_05[i]->GetName() << '\t'
184 << histosDst_05[i]->Integral("width")/histosDst_05[i]->Integral(21,120,"width") << '\t'
185 << histosDst_ally[i]->Integral("width")/histosDst_05[i]->Integral("width") << '\t'
186 << ratDst[i] << endl;
189 ratDplus[i] = histosDplus_ally[i]->Integral("width")/histosDplus_05[i]->Integral(21,120,"width");
190 if (ratDplus[i] > ratscalmaxDplus && 0 <= i <= 6) {ratscalmaxDplus = ratDplus[i];}
191 if (ratDplus[i] < ratscalminDplus && 0 <= i <= 6) {ratscalminDplus = ratDplus[i];}
193 if (ratDplus[i] > ratmassmaxDplus && (i == 0 || i == 7 || i == 8)) {ratmassmaxDplus = ratDplus[i];}
194 if (ratDplus[i] < ratmassminDplus && (i == 0 || i == 7 || i == 8)) {ratmassminDplus = ratDplus[i];}
196 if (ratDplus[i] > ratpdfmaxDplus && (i == 0 || i == 9 || i == 10)) {ratpdfmaxDplus = ratDplus[i];}
197 if (ratDplus[i] < ratpdfminDplus && (i == 0 || i == 9 || i == 10)) {ratpdfminDplus = ratDplus[i];}
199 outDplus << histosDplus_05[i]->GetName() << '\t'
200 << histosDplus_05[i]->Integral("width")/histosDplus_05[i]->Integral(21,120,"width") << '\t'
201 << histosDplus_ally[i]->Integral("width")/histosDplus_05[i]->Integral("width") << '\t'
202 << ratDplus[i] << endl;
207 //Maximum and minimum error on centrals:
208 Double_t ratscalD0UpErr, ratscalD0LowErr, ratscalDstUpErr, ratscalDstLowErr, ratscalDplusUpErr, ratscalDplusLowErr, ratmassD0UpErr, ratmassD0LowErr, ratmassDstUpErr, ratmassDstLowErr, ratmassDplusUpErr, ratmassDplusLowErr, ratpdfD0UpErr, ratpdfD0LowErr, ratpdfDstUpErr, ratpdfDstLowErr, ratpdfDplusUpErr, ratpdfDplusLowErr, ratD0UpErr, ratD0LowErr, ratDstUpErr, ratDstLowErr, ratDplusUpErr, ratDplusLowErr;
210 ratscalD0UpErr = ratscalmaxD0 - ratD0cent;
211 ratscalD0LowErr = ratD0cent - ratscalminD0;
212 ratscalDstUpErr = ratscalmaxDst - ratDstcent;
213 ratscalDstLowErr = ratDstcent - ratscalminDst;
214 ratscalDplusUpErr = ratscalmaxDplus - ratDpluscent;
215 ratscalDplusLowErr = ratDpluscent - ratscalminDplus;
217 ratmassD0UpErr = ratmassmaxD0 - ratD0cent;
218 ratmassD0LowErr = ratD0cent - ratmassminD0;
219 ratmassDstUpErr = ratmassmaxDst - ratDstcent;
220 ratmassDstLowErr = ratDstcent - ratmassminDst;
221 ratmassDplusUpErr = ratmassmaxDplus - ratDpluscent;
222 ratmassDplusLowErr = ratDpluscent - ratmassminDplus;
224 ratpdfD0UpErr = ratpdfmaxD0 - ratD0cent;
225 ratpdfD0LowErr = ratD0cent - ratpdfminD0;
226 ratpdfDstUpErr = ratpdfmaxDst - ratDstcent;
227 ratpdfDstLowErr = ratDstcent - ratpdfminDst;
228 ratpdfDplusUpErr = ratpdfmaxDplus - ratDpluscent;
229 ratpdfDplusLowErr = ratDpluscent - ratpdfminDplus;
231 //Overall uncertainties are mass uncertainty and scale uncertainty added in quadrature
232 ratD0UpErr = sqrt(ratscalD0UpErr*ratscalD0UpErr+ratmassD0UpErr*ratmassD0UpErr+ratpdfD0UpErr*ratpdfD0UpErr);
233 ratD0LowErr = sqrt(ratscalD0LowErr*ratscalD0LowErr+ratmassD0LowErr*ratmassD0LowErr+ratpdfD0LowErr*ratpdfD0LowErr);
234 ratDstUpErr = sqrt(ratscalDstUpErr*ratscalDstUpErr+ratmassDstUpErr*ratmassDstUpErr+ratpdfDstUpErr*ratpdfDstUpErr);
235 ratDstLowErr = sqrt(ratscalDstLowErr*ratscalDstLowErr+ratmassDstLowErr*ratmassDstLowErr+ratpdfDstLowErr*ratpdfDstLowErr);
236 ratDplusUpErr = sqrt(ratscalDplusUpErr*ratscalDplusUpErr+ratmassDplusUpErr*ratmassDplusUpErr+ratpdfDplusUpErr*ratpdfDplusUpErr);
237 ratDplusLowErr = sqrt(ratscalDplusLowErr*ratscalDplusLowErr+ratmassDplusLowErr*ratmassDplusLowErr+ratpdfDplusLowErr*ratpdfDplusLowErr);
240 //Output ratios to file for future reference:
242 ofstream outratios("ratios.txt");
243 outratios << "D0\ncentral\t" << ratD0cent << "\nscales:\t+" << ratscalD0UpErr << "\t-" << ratscalD0LowErr << "\nmass:\t+" << ratmassD0UpErr << "\t-" << ratmassD0LowErr << "\nPDF:\t+" << ratpdfD0UpErr << "\t-" << ratpdfD0LowErr << "\nOverall:\t+" << ratD0UpErr << "\t-" << ratD0LowErr
244 << "\n\nD*\ncentral\t" << ratDstcent << "\nscales:\t+" << ratscalDstUpErr << "\t-" << ratscalDstLowErr << "\nmass:\t+" << ratmassDstUpErr << "\t-" << ratmassDstLowErr << "\nPDF:\t+" << ratpdfDstUpErr << "\t-" << ratpdfDstLowErr << "\nOverall:\t+" << ratDstUpErr << "\t-" << ratDstLowErr
245 << "\n\nD+\ncentral\t" << ratDpluscent << "\nscales:\t+" << ratscalDplusUpErr << "\t-" << ratscalDplusLowErr << "\nmass:\t+" << ratmassDplusUpErr << "\t-" << ratmassDplusLowErr << "\nPDF:\t+" << ratpdfDplusUpErr << "\t-" << ratpdfDplusLowErr << "\nOverall:\t+" << ratDplusUpErr << "\t-" << ratDplusLowErr << '\n';
247 Double_t D0stati[6], Dststati[6], Dplusstati[6];
249 Double_t D0stat =0, Dststat=0, Dplusstat=0, D0statsq=0, Dststatsq=0, Dplusstatsq=0, D0systhi=0, D0systlo=0, Dstsysthi=0, Dstsystlo=0, Dplussysthi=0, Dplussystlo=0;
250 for (Int_t i = 4; i<=9; i++) {
251 D0stati[i-4] = hD0stat->GetBinError(i)/1e6/3.89e-2;
252 Dststati[i-4] = hDststat->GetBinError(i-1)/1e6/3.89e-2/67.7e-2;
253 Dplusstati[i-4] = hDplusstat->GetBinError(i-3)/1e6/0.0922;
255 //Statistical added in quadrature (bin widths included)
256 D0statsq += pow(D0stati[i-4]*hD0stat->GetBinWidth(i),2);
257 Dststatsq += pow(Dststati[i-4]*hDststat->GetBinWidth(i-1),2);
258 Dplusstatsq += pow(Dplusstati[i-4]*hDplusstat->GetBinWidth(i-3),2);
263 //Rooting to get actual values from delta-sigma-squared
264 D0stat = sqrt(D0statsq); Dststat = sqrt(Dststatsq); Dplusstat = sqrt(Dplusstatsq);
266 //Corrected systematics are not in a ROOT file, input here manually
267 D0systhi = 967844/1e6/3.89e-2;
268 D0systlo = 1849380/1e6/3.89e-2;
269 Dstsysthi = 232479/1e6/3.89e-2/67.7e-2;
270 Dstsystlo = 379356/1e6/3.89e-2/67.7e-2;
271 Dplussysthi = 1710680/1e6/0.0922;
272 Dplussystlo = 3402420/1e6/0.0922;
275 //Visible D cross sections from data file, "width" switch incorporates bin widths
276 Double_t D0vis = hD0stat->Integral("width")/1e6/3.89e-2,
277 Dstvis = hDststat->Integral("width")/1e6/67.7e-2/3.89e-2,
278 Dplusvis = hDplusstat->Integral("width")/1e6/0.0922;
280 //Branching ratio errors as percentage:
281 Double_t ErrBrD0Perc = 0.0002785/0.0216673, ErrBrDstPerc = 9.29153e-5/0.0062678, ErrBrDplusPerc = 0.0004746/0.0208372;
283 //Luminosity errors as percentages
285 Double_t ErrLumD0Perc=0.07, ErrLumDstPerc=0.07, ErrLumDplusPerc=0.07;
287 //Initialising doubles for final results:
288 Double_t crossD0, crossD0stat, crossD0systhi, crossD0systlo, crossD0lum, crossD0br, crossD0extrhi, crossD0extrlo, crossDst, crossDststat, crossDstsysthi, crossDstsystlo, crossDstlum, crossDstbr, crossDstextrhi, crossDstextrlo, crossDplus, crossDplusstat, crossDplussysthi, crossDplussystlo, crossDpluslum, crossDplusbr, crossDplusextrhi, crossDplusextrlo;
290 //Also initialising for final ccbar cross sec:
291 Double_t ccbarD0, ccbarD0stat, ccbarD0systhi, ccbarD0systlo, ccbarD0lum, ccbarD0extrhi, ccbarD0extrlo, ccbarDst, ccbarDststat, ccbarDstsysthi, ccbarDstsystlo, ccbarDstlum, ccbarDstextrhi, ccbarDstextrlo, ccbarDplus, ccbarDplusstat, ccbarDplussysthi, ccbarDplussystlo, ccbarDpluslum, ccbarDplusextrhi, ccbarDplusextrlo;
293 //Cross section is visible multiplied by central ratio
294 crossD0 = D0vis * ratD0cent;
295 crossDst = Dstvis * ratDstcent;
296 crossDplus = Dplusvis * ratDpluscent;
298 //Stat on each is statitstical of visible multiplied by central ratio
299 crossD0stat = D0stat * ratD0cent;
300 crossDststat = Dststat * ratDstcent;
301 crossDplusstat = Dplusstat * ratDpluscent;
303 //Systematic the same, but upper and lower separately
304 crossD0systhi = D0systhi * ratD0cent;
305 crossD0systlo = D0systlo * ratD0cent;
306 crossDstsysthi = Dstsysthi * ratDstcent;
307 crossDstsystlo = Dstsystlo * ratDstcent;
308 crossDplussysthi = Dplussysthi * ratDpluscent;
309 crossDplussystlo = Dplussystlo * ratDpluscent;
311 //Luminosity errors are percentage multiplied by central result
312 crossD0lum = ErrLumD0Perc * crossD0;
313 crossDstlum = ErrLumDstPerc * crossDst;
314 crossDpluslum = ErrLumDplusPerc * crossDplus;
316 //Similarly for branching ratios
317 crossD0br = ErrBrD0Perc * crossD0;
318 crossDstbr = ErrBrDstPerc * crossDst;
319 crossDplusbr = ErrBrDplusPerc * crossDplus;
321 //Extrapolation hi/lo errors are overall hi/lo ratio errors multiplied by visible
322 crossD0extrhi = ratD0UpErr * D0vis;
323 crossD0extrlo = ratD0LowErr * D0vis;
324 crossDstextrhi = ratDstUpErr * Dstvis;
325 crossDstextrlo = ratDstLowErr * Dstvis;
326 crossDplusextrhi = ratDplusUpErr * Dplusvis;
327 crossDplusextrlo = ratDplusLowErr * Dplusvis;
329 //ccbar cross section: divide result by fragmentation ratio. This is calculated the same way for all uncertainties
331 Double_t D0frag = 0.557, Dstfrag = 0.238, Dplusfrag = 0.226;
334 ccbarD0 = crossD0/D0frag;
335 ccbarD0stat = crossD0stat/D0frag;
336 ccbarD0systhi = crossD0systhi/D0frag;
337 ccbarD0systlo = crossD0systlo/D0frag;
338 ccbarD0lum = crossD0lum/D0frag;
339 ccbarD0extrhi = crossD0extrhi/D0frag;
340 ccbarD0extrlo = crossD0extrlo/D0frag;
343 ccbarDst = crossDst/Dstfrag;
344 ccbarDststat = crossDststat/Dstfrag;
345 ccbarDstsysthi = crossDstsysthi/Dstfrag;
346 ccbarDstsystlo = crossDstsystlo/Dstfrag;
347 ccbarDstlum = crossDstlum/Dstfrag;
348 ccbarDstextrhi = crossDstextrhi/Dstfrag;
349 ccbarDstextrlo = crossDstextrlo/Dstfrag;
352 ccbarDplus = crossDplus/Dplusfrag;
353 ccbarDplusstat = crossDplusstat/Dplusfrag;
354 ccbarDplussysthi = crossDplussysthi/Dplusfrag;
355 ccbarDplussystlo = crossDplussystlo/Dplusfrag;
356 ccbarDpluslum = crossDpluslum/Dplusfrag;
357 ccbarDplusextrhi = crossDplusextrhi/Dplusfrag;
358 ccbarDplusextrlo = crossDplusextrlo/Dplusfrag;
361 //To combine: Add D0 + D+, divide by total frag. ratio of the two. Take weighted average of this value with D* using 1/(stat)^2 as weight.
364 //Initialising variables:
365 Double_t totalfrag, D0Dplusccbar, D0Dplusccbarstat, D0Dplusccbarsysthi, D0Dplusccbarsystlo, D0Dplusccbarlum, D0Dplusccbarextrhi, D0Dplusccbarextrlo;
367 totalfrag = D0frag + Dplusfrag;
369 //Propagating this method through:
370 D0Dplusccbar = (crossD0 + crossDplus)/totalfrag;
371 //Errors are quadratic sum of D0 and D+ errors, divided by total frag. ratio
372 D0Dplusccbarstat = sqrt(crossD0stat * crossD0stat + crossDplusstat * crossDplusstat)/totalfrag;
373 D0Dplusccbarsysthi = sqrt(crossD0systhi * crossD0systhi + crossDplussysthi * crossDplussysthi)/totalfrag;
374 D0Dplusccbarsystlo = sqrt(crossD0systlo * crossD0systlo + crossDplussystlo * crossDplussystlo)/totalfrag;
375 D0Dplusccbarlum = sqrt(crossD0lum * crossD0lum + crossDpluslum * crossDpluslum)/totalfrag;
376 D0Dplusccbarextrhi = sqrt(crossD0extrhi * crossD0extrhi + crossDplusextrhi * crossDplusextrhi)/totalfrag;
377 D0Dplusccbarextrlo = sqrt(crossD0extrlo * crossD0extrlo + crossDplusextrlo * crossDplusextrlo)/totalfrag;
379 cout << "Just to test, this is D0Dplusccbar: " << D0Dplusccbar << "\n\n\n";
383 Double_t weightD0Dplus, weightDst, totalweight, overallccbar, overallccbarstat, overallccbarsysthi, overallccbarsystlo, overallccbarlum, overallccbarextrhi, overallccbarextrlo;
386 //Weights are 1/sigma(stat)^2 (absolute value of error, not relative errors)
387 weightD0Dplus = 1/(D0Dplusccbarstat*D0Dplusccbarstat);
388 weightDst = 1/(ccbarDststat*ccbarDststat);
390 totalweight = weightD0Dplus + weightDst;
392 //Statistical error is square root of 1/(total weight):
393 overallccbarstat = 1/sqrt(totalweight);
395 //Weighted averages of everything else:
396 overallccbar = (D0Dplusccbar * weightD0Dplus + ccbarDst * weightDst)/totalweight;
397 overallccbarsysthi = (D0Dplusccbarsysthi * weightD0Dplus + ccbarDstsysthi * weightDst)/totalweight;
398 overallccbarsystlo = (D0Dplusccbarsystlo * weightD0Dplus + ccbarDstsystlo * weightDst)/totalweight;
399 overallccbarlum = (D0Dplusccbarlum * weightD0Dplus + ccbarDstlum * weightDst)/totalweight;
400 overallccbarextrhi = (D0Dplusccbarextrhi * weightD0Dplus + ccbarDstextrhi * weightDst)/totalweight;
401 overallccbarextrlo = (D0Dplusccbarextrlo * weightD0Dplus + ccbarDstextrlo * weightDst)/totalweight;
404 //Outputs all cross sections to screen
405 cout << "D0:\nVisible =\t" << D0vis << " ± " << D0stat << " (stat.) + " << D0systhi << " - " << D0systlo << " (syst.) microbarn\nExtrapolated =\t" << crossD0 << " ± " << crossD0stat << " (stat.) +" << crossD0systhi <<" -" << crossD0systlo << " (syst.) ± " << crossD0lum << " (lum) ± " << crossD0br << " (br.) +" << crossD0extrhi << " -" << crossD0extrlo << " (extr.) microbarn\nTotal sigma =\t" << ccbarD0 << " ± " << ccbarD0stat << " (stat.) +" << ccbarD0systhi <<" -" << ccbarD0systlo << " (syst.) ± " << ccbarD0lum << " (lum) +" << ccbarD0extrhi << " -" << ccbarD0extrlo << " (extr.) microbarn\n"
406 << "Dst:\nVisible =\t" << Dstvis << " ± " << Dststat << " (stat.) + " << Dstsysthi << " - " << Dstsystlo << " (syst.) microbarn\nExtrapolated =\t" << crossDst << " ± " << crossDststat << " (stat.) +" << crossDstsysthi <<" -" << crossDstsystlo << " (syst.) ± " << crossDstlum << " (lum) ± " << crossDstbr << " (br.) +" << crossDstextrhi << " -" << crossDstextrlo << " (extr.) microbarn\nTotal sigma =\t" << ccbarDst << " ± " << ccbarDststat << " (stat.) +" << ccbarDstsysthi <<" -" << ccbarDstsystlo << " (syst.) ± " << ccbarDstlum << " (lum) +" << ccbarDstextrhi << " -" << ccbarDstextrlo << " (extr.) microbarn\n"
407 << "Dplus:\nVisible =\t" << Dplusvis << " ± " << Dplusstat << " (stat.) + " << Dplussysthi << " - " << Dplussystlo << " (syst.) microbarn\nExtrapolated =\t" << crossDplus << " ± " << crossDplusstat << " (stat.) +" << crossDplussysthi <<" -" << crossDplussystlo << " (syst.) ± " << crossDpluslum << " (lum) ± " << crossDplusbr << " (br.) +" << crossDplusextrhi << " -" << crossDplusextrlo << " (extr.) microbarn\nTotal sigma =\t" << ccbarDplus << " ± " << ccbarDplusstat << " (stat.) +" << ccbarDplussysthi <<" -" << ccbarDplussystlo << " (syst.) ± " << ccbarDpluslum << " (lum) +" << ccbarDplusextrhi << " -" << ccbarDplusextrlo << " (extr.) microbarn\n\nWeighted average =\t" << overallccbar << " ± " << overallccbarstat << " (stat.) + " << overallccbarsysthi << " - " << overallccbarsystlo << " (syst.) ± " << overallccbarlum << " (lum.) + " << overallccbarextrhi << " - " << overallccbarextrlo << " (extr.) µb\n";