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analyze_pair.py
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analyze_pair.py
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import os, sys, shutil
import math
import numpy as np
import ctypes
import ROOT
from ROOT import TH1D, TH2D, TH3D, TList, TF1
from ROOT import gROOT, gSystem, gStyle, gPad
from ROOT import kWhite, kBlack, kRed, kGreen, kBlue, kYellow, kOrange
from histo_manager import slice_histogram, rebin_histogram, get_bkg_subtracted, get_ratio
#_________________________________________________________________________________________
def analyze_ptspectrum(rootfile, ssname, cutname, arr_pt):
print(sys._getframe().f_code.co_name);
outlist = TList();
outlist.SetName(cutname);
print(arr_pt);
npt = len(arr_pt);
dir_main = rootfile.Get("pi0eta-to-gammagamma");
list_pair = dir_main.Get("Pair");
list_ev = dir_main.Get("Event");
list_pair.Print();
list_ev .Print();
list_pair_subsystem = list_pair.FindObject(ssname);
list_ev_subsystem = list_ev.FindObject(ssname);
list_pair_subsystem.Print();
list_ev_subsystem.Print();
list_cut = list_pair_subsystem.FindObject(cutname);
list_cut.Print();
h1ev = list_ev_subsystem.FindObject("hCollisionCounter");
h2same = list_cut.FindObject("hMggPt_Same");
h2mix = list_cut.FindObject("hMggPt_Mixed");
h2same.Sumw2();
h2mix .Sumw2();
h2same.SetDirectory(0);
h2mix .SetDirectory(0);
h2same.RebinX(2);
h2mix .RebinX(2);
nev = h1ev.GetBinContent(4);
print("nev = {0:e}".format(nev));
outlist.Add(h1ev);
outlist.Add(h2same);
outlist.Add(h2mix);
h1yield = TH1D("h1yield","raw yield",npt-1, arr_pt);
h1mean = TH1D("h1mean" ,"peak mean",npt-1, arr_pt);
h1sigma = TH1D("h1sigma","peak sigma",npt-1, arr_pt);
h1alpha = TH1D("h1alpha","alpha of CB",npt-1, arr_pt);
h1n = TH1D("h1n" ,"n of CB",npt-1, arr_pt);
h1yield.SetXTitle("#it{p}_{T} (GeV/#it{c})");
h1yield.SetYTitle("#frac{1}{#it{N}_{ev}} #frac{d#it{N}}{d#it{p}_{T}} (GeV/#it{c})^{-1}");
h1mean.SetXTitle("#it{p}_{T} (GeV/#it{c})");
h1mean.SetYTitle("peak mean (GeV/#it{c}^{2})");
h1sigma.SetXTitle("#it{p}_{T} (GeV/#it{c})");
h1sigma.SetYTitle("peak sigma (GeV/#it{c}^{2})");
h1alpha.SetXTitle("#it{p}_{T} (GeV/#it{c})");
h1alpha.SetYTitle("#alpha of CB");
h1n.SetXTitle("#it{p}_{T} (GeV/#it{c})");
h1n.SetYTitle("n of CB");
for i in range(0, npt-1):
pt1 = arr_pt[i];
pt2 = arr_pt[i+1];
h1same = slice_histogram(h2same, pt1, pt2, "X", False);
h1same.SetName("h1mgg_same_pt{0}".format(i));
h1same.SetTitle("m_{{#gamma#gamma}}^{{same}}, {0:2.1f} < #it{{p}}_{{T,#gamma#gamma}} < {1:2.1f} GeV/#it{{c}}".format(pt1, pt2));
h1mix = slice_histogram(h2mix , pt1, pt2, "X", False);
h1mix.SetTitle("m_{{#gamma#gamma}}^{{mix}}, {0:2.1f} < #it{{p}}_{{T,#gamma#gamma}} < {1:2.1f} GeV/#it{{c}}".format(pt1, pt2));
h1mix.SetName("h1mgg_mix_pt{0}".format(i));
h1same.SetDirectory(0);
h1mix .SetDirectory(0);
npair_same = h1same.GetEntries();
npair_mix = h1mix.GetEntries();
if npair_mix < 1e-6:
continue;
h1mix.Scale(npair_same/npair_mix);
h1ratio = get_ratio(h1same, h1mix);
h1ratio.SetName("h1mgg_ratio_pt{0}".format(i));
h1ratio.SetTitle("m_{{#gamma#gamma}}^{{ratio}}, {0:2.1f} < #it{{p}}_{{T,#gamma#gamma}} < {1:2.1f} GeV/#it{{c}}".format(pt1, pt2));
h1ratio .SetDirectory(0);
f1ratio = TF1("f1ratio_pt{0}".format(i),"crystalball(0) + pol1(5)",0,1); #height, mu, sigma, alpha, n
f1ratio.SetNpx(1000);
#print(f1ratio.GetExpFormula(""));
bin135 = h1ratio.FindBin(0.135);
bin200 = h1ratio.FindBin(0.2);
height = h1ratio.GetBinContent(bin135) - h1ratio.GetBinContent(bin200);
f1ratio.SetParameter(0,height);
f1ratio.SetParameter(1,0.13);
f1ratio.SetParameter(2,0.01);
f1ratio.SetParameter(3,0.5);
f1ratio.SetParameter(4,0.1);
f1ratio.SetParameter(5,0.1);
f1ratio.SetParameter(6,-0.1);
f1ratio.SetParLimits(0,1e-3,10);
f1ratio.SetParLimits(1,0.12, 0.16);
f1ratio.SetParLimits(2,0.003, 0.02);
f1ratio.FixParameter(3,0.6);
#f1ratio.FixParameter(4,1e+10);
#f1ratio.SetParLimits(3,0, 100);
f1ratio.SetParLimits(4,0, 100);
h1ratio.Fit(f1ratio,"SME","",0.04, 0.24);
h1bkg = h1mix.Clone("h1bkg");
f1bkg = TF1("f1bkg_pt{0}".format(i),"pol1(0)",0,1);
for ip in range(f1bkg.GetNpar()):
f1bkg.FixParameter(ip, f1ratio.GetParameter(ip + 5));
h1bkg.Multiply(f1bkg);
h1bkg.SetName("h1mgg_bkg_pt{0}".format(i));
h1bkg.SetTitle("m_{{#gamma#gamma}}^{{bkg}}, {0:2.1f} < #it{{p}}_{{T,#gamma#gamma}} < {1:2.1f} GeV/#it{{c}}".format(pt1, pt2));
h1bkg .SetDirectory(0);
h1sig = get_bkg_subtracted(h1same, h1bkg);
h1sig.SetName("h1mgg_sig_pt{0}".format(i));
h1sig.SetTitle("m_{{#gamma#gamma}}^{{sig}}, {0:2.1f} < #it{{p}}_{{T,#gamma#gamma}} < {1:2.1f} GeV/#it{{c}}".format(pt1, pt2));
h1sig .SetDirectory(0);
f1sig = TF1("f1sig_pt{0}".format(i),"crystalball(0)",0,1);
f1sig.SetNpx(1000);
for ip in range(f1sig.GetNpar()):
f1sig.SetParameter(ip, f1ratio.GetParameter(ip));
bin135 = h1sig.FindBin(0.135);
height = h1sig.GetBinContent(bin135);
f1sig.SetParameter(0,height);
f1sig.SetParameter(1,0.13);
f1sig.SetParameter(2,0.01);
f1sig.SetParameter(3,0.5);
f1sig.SetParameter(4,1);
f1sig.SetParLimits(0,1,1e+7);
f1sig.SetParLimits(1,0.12, 0.16);
f1sig.SetParLimits(2,0.003, 0.02);
f1sig.FixParameter(3,0.6);
f1sig.SetParLimits(4,0, 100);
h1sig.Fit(f1sig,"SME","",0.04, 0.24);
mean = f1sig.GetParameter(1);
mean_err = f1sig.GetParError(1);
sigma = f1sig.GetParameter(2);
sigma_err = f1sig.GetParError(2);
alpha = f1sig.GetParameter(3);
alpha_err = f1sig.GetParError(3);
n = f1sig.GetParameter(4);
n_err = f1sig.GetParError(4);
h1mean.SetBinContent(i+1, mean);
h1mean.SetBinError(i+1, mean_err);
h1sigma.SetBinContent(i+1, sigma);
h1sigma.SetBinError(i+1, sigma_err);
h1alpha.SetBinContent(i+1, alpha);
h1alpha.SetBinError(i+1, alpha_err);
h1n.SetBinContent(i+1, n);
h1n.SetBinError(i+1, n_err);
bin1 = h1sig.FindBin(mean - 3*sigma);
bin2 = h1sig.FindBin(mean + 3*sigma);
ry_err = ctypes.c_double(0);
ry = h1sig.IntegralAndError(bin1,bin2,ry_err,"");
h1yield.SetBinContent(i+1, ry);
h1yield.SetBinError(i+1, ry_err);
outlist.Add(h1same);
outlist.Add(h1mix);
outlist.Add(h1ratio);
outlist.Add(f1ratio);
outlist.Add(h1bkg);
outlist.Add(h1sig);
outlist.Add(f1sig);
h1yield.Scale(1/nev);
h1yield.Scale(1., "width");
outlist.Add(h1yield);
outlist.Add(h1mean );
outlist.Add(h1sigma);
outlist.Add(h1alpha);
outlist.Add(h1n );
return outlist;
#_________________________________________________________________________________________
def analyze_mee_ptee_efficiency(rootfile,cutname,arr_mee, arr_ptee):
print(sys._getframe().f_code.co_name);
outlist = TList();
outlist.SetName(cutname);
return outlist;
#_________________________________________________________________________________________