21 def testFit(self):
22 """Run the test fit"""
23
24 testFile = tempfile.NamedTemporaryFile()
25
26 main = basf2.create_path()
27
29 'analysis/1000_B_Jpsi_ks_pipi.root', 'validation', py_case=self)
30 ma.inputMdst(inputfile, path=main)
31
32 ma.fillParticleList('pi+:a', 'pionID > 0.5', path=main)
33
34 ma.reconstructDecay('K_S0:pipi -> pi+:a pi-:a', '', 0, path=main)
35 ma.matchMCTruth('K_S0:pipi', path=main)
36
37 conf = 0
38 main.add_module('TreeFitter',
39 particleList='K_S0:pipi',
40 confidenceLevel=conf,
41 massConstraintList=[],
42 massConstraintListParticlename=[],
43 expertUseReferencing=True,
44 ipConstraint=False,
45 updateAllDaughters=False)
46
47 ma.printMCParticles(path=main, suppressPrint=True, showStatus=True, showMomenta=True)
48
49 ntupler = basf2.register_module('VariablesToNtuple')
50 ntupler.param('fileName', testFile.name)
51 ntupler.param('variables', ['chiProb', 'M', 'isSignal', 'mcErrors', 'genParticleID',
52 'daughter(0,genParticleID)', 'daughter(1,genParticleID)'])
53 ntupler.param('particleList', 'K_S0:pipi')
54 main.add_module(ntupler)
55
56 basf2.process(main)
57
58 ntuplefile = TFile(testFile.name)
59 ntuple = ntuplefile.Get('ntuple')
60
61 self.assertFalse(ntuple.GetEntries() == 0, "Ntuple is empty.")
62
63 allBkg = ntuple.GetEntries("isSignal == 0")
64 allSig = ntuple.GetEntries("isSignal > 0")
65
66 truePositives = ntuple.GetEntries("(chiProb > 0) && (isSignal > 0)")
67 falsePositives = ntuple.GetEntries("(chiProb > 0) && (isSignal == 0)")
68
69 mustBeZero = ntuple.GetEntries(f"(chiProb < {conf})")
70
71 print(f"True fit survivors: {truePositives} out of {allSig} true candidates")
72 print(f"False fit survivors: {falsePositives} out of {allBkg} false candidates")
73
74 self.assertFalse(truePositives == 0, "No signal survived the fit.")
75
76 self.assertTrue(falsePositives == 3449, f"Too many false positives: {falsePositives} out of {allBkg} total bkg events.")
77
78 self.assertTrue(truePositives == 555, "Signal rejection too high")
79 self.assertFalse(mustBeZero, f"We should have dropped all candidates with confidence level less than {conf}.")
80
81 print("Test passed, cleaning up.")
82
83
def require_file(filename, data_type="", py_case=None)
1.9.6