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0001 #
0002 # @file RunHitFitConfiguration.txt
0003 #
0004 # @brief Example of input file to be used with RunHitFit class.
0005 #
0006 # @author Haryo Sumowidagdo <Suharyo.Sumowidagdo@cern.ch>
0007 #
0008 # @date Mon Aug 30 14:39:33 CEST 2010
0009 #
0010
0011 #########################################################################
0012 # Top_Fit parameters
0013 #
0014
0015 # Minimum hadronic W mass allowed before fit
0016 mwhad_min_cut = 0
0017
0018 # Maximum hadronic W mass allowed before fit
0019 mwhad_max_cut = 10000
0020
0021 # Maximum difference in mass between leptonic and hadronic top quark mass
0022 # allowed before fit
0023 mtdiff_max_cut = 10000
0024
0025 # Maximum jet invariant mass cut allowed
0026 jet_mass_cut = 10000
0027
0028 # Maximum number of solution to be keep
0029 nkeep = 1680
0030
0031 # If true, solve neutrino pz by requiring the leptonic side and
0032 # hadronic side to have equal mass
0033 # If false, solve neutrino pz by requiring m(lepton,neutrino) = mW
0034 solve_nu_tmass = true
0035
0036 # Fit ttH -> l+jets+bb
0037 # Should always be set to FALSE
0038 # Reason: Event with the same ttbar jet assignment but different
0039 # Higgs-jet/b-bbar jet assignment ARE not weighed differently by HitFit.
0040 # So it is just a waste of CPU time and storage area with no gain in
0041 # information.
0042 # For ttH analysis, it is better to fit ttbar first, and then perform the dijet
0043 # invariant mass analysis later.
0044 do_higgs_flag = false
0045
0046 # If true, print event after fit in Top_Fit fitter.
0047 # If false, do not print event after fit in Top_Fit fitter.
0048 # Should always be set to FALSE
0049 print_event_flag = false
0050
0051 #########################################################################
0052 # Constrained_Top parms
0053 #
0054
0055 # Mass of the b-quark.
0056 bmass = 4.7
0057
0058 # Require that the leptonic top and hadronic top to have equal mass after
0059 # the fit.
0060 equal_side = true
0061
0062
0063 #########################################################################
0064 # Fourvec_Constrainer parms.
0065 #
0066
0067 # All the objects are fixed to constant masses for the fit.
0068 # (These masses are attributes of the objects in the Fourvec_Event.)
0069 # This is done by scaling either the 4-vector's 3-momentum or energy,
0070 # depending on the setting of this parameter.
0071 # If TRUE: Keep E and rescale three-momentum.
0072 # If FALSE: Keep three-momentum and rescale E.
0073 use_e = true
0074
0075 # Center-of-mass energy. Used to force a step cut
0076 # if the fit goes into an unphysical region.
0077 # Tevatron Run 1 : e_com = 1800
0078 # Tevatron Run 2 : e_com = 1960
0079 # LHC Run : e_com = 7000, 8000, 10000, 12000, 13000, 14000
0080 e_com = 7000
0081
0082 # If this is true and the event does not have a neutrino,
0083 # then the fit will be done without the overall transverse
0084 # momentum constraint (and thus the missing Et information
0085 # will be ignored). If the event does have a neutrino, this parameter
0086 # is ignored.
0087 ignore_met = false
0088
0089
0090 #########################################################################
0091 # Chisq_Constrainer parms.
0092 #
0093
0094 # If true, print a trace of the fit to cout.
0095 printfit = false
0096
0097 # If true, check the chisq formula by computing it directly from G.
0098 # This requires that G_i be invertible.
0099 use_G = false
0100
0101 # Convergence threshold for sum of constraints.
0102 constraint_sum_eps = 0.01
0103
0104 # Convergence threshold for change in chisq.
0105 chisq_diff_eps = 0.01
0106
0107 # Maximum number of iterations permitted.
0108 maxit = 10000
0109
0110 # Maximum number of cut steps permitted.
0111 maxcut = 20
0112
0113 # Fraction by which to cut steps.
0114 cutsize = 0.5
0115
0116 # Smallest fractional cut step permitted.
0117 min_tot_cutsize = 1e-10
0118
0119 # When use_G is true, the maximum relative difference permitted between
0120 # the two chisq calculations.
0121 chisq_test_eps = 1e-5
0122
0123
0124 #########################################################################
0125 # Base_Constrainer parms.
0126 #
0127
0128 # If true, check the constraint gradient calculations by also
0129 # doing them numerically.
0130 test_gradient = false
0131
0132 # When test_gradient is true, step size to use for numeric differentiation.
0133 test_step = 0.002
0134
0135 # When test_gradient is true, maximum relative difference permitted
0136 # between returned and numerically calculated gradients.
0137 test_eps = 0.035
