# This file sent by Claire Gwenlan to Christopher Lester 12th Sept 2007.  See mail
# in folder "mt2".  Demonstrates a bug Claire saw where the
# Basic_Mt2_332_Calculator was not producing values minimised very well at
# all - as demonstrated by much smaller MT2 values found by old fortran MT2
# calculators.  See code below.  Claire would have been using the ATLAS rep
# version of the mt2 code -- in a form equivalent to a date 8th Sept 2007.
#
# format of file is:
# mass1 px1 py1   mass2 px2 py2  ptmissx ptmissy  goodmt2 badmt2
#
# goodmt2 = fortran code (str_minuit.f) with c++ wrapper - is this enough info?
# badmt2 = calculated using Basic_Mt2_332_Calculator
# for all mt2 calculations I have set mlsp=0
#
# NB. all the numbers I give below are in MeV units, as this is what I 
# feed into the mt2 calculators by default. Some of the example events 
# I give below, can be "sorted out" i.e. badmt2 made to equal goodmt2 
# by changing this input to GeV. But this is not true in all cases.
#
# various example events (1,3,4,8 are ones where I found that badmt2=goodmt2 if input is GeV)
# QCD J7
1.258670e+05	1.571520e+06	1.572370e+05	9.757710e+04	-1.183100e+06	1.479710e+04	-5.753920e+04	-2.356870e+02	1.258670e+05	4.443730e+05	
6.256940e+04	1.288650e+05	1.180090e+06	7.800940e+04	-1.329990e+05	-1.089660e+06	7.652250e+02	-8.213820e+04	8.228860e+04	4.454130e+05	
1.341360e+05	3.326890e+05	-1.283550e+06	9.644650e+04	-6.514870e+04	1.149020e+06	1.437980e+03	9.277770e+04	1.341360e+05	5.101580e+05	
9.235300e+04	-3.740560e+05	-1.064090e+06	1.830350e+05	3.642610e+05	1.065280e+06	-1.448250e+03	-3.466820e+04	1.830350e+05	3.324730e+05	
9.046870e+04	1.840110e+06	6.785220e+05	9.780580e+04	-1.630920e+06	-6.143020e+05	-5.887950e+04	4.870900e+02	1.062900e+05	4.814570e+05	
1.182120e+05	1.367560e+06	5.090250e+05	6.409280e+04	-1.290560e+06	-4.467530e+05	-2.323400e+04	-5.225580e+02	1.182120e+05	2.829080e+05	
7.755540e+04	-9.667320e+05	7.152930e+05	1.010010e+05	8.471940e+05	-5.228630e+05	-8.270070e+02	3.081700e+04	1.043150e+05	2.405480e+05	
9.918510e+04	-6.460480e+04	-1.343380e+06	1.204820e+05	9.848800e+04	1.335590e+06	3.381800e+02	-5.554830e+04	1.204820e+05	4.041840e+05	
# QCD J4
1.990270e+04	8.762820e+03	1.808790e+05	1.786660e+04	-1.777620e+04	-1.537630e+05	-1.771590e+02	-4.196540e+04	2.149110e+04	1.250350e+05	
# SUSY SU3
5.393630e+04	2.803780e+05	-5.825570e+05	4.760900e+04	-3.659650e+05	2.836080e+05	1.240290e+04	2.463720e+05	2.151650e+05	5.504520e+05	
