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Most of the analysis is done using specialised ROOT macros which will be
discussed later. Some general infrastructure is, however, contained in
the standard NA49 ROOT libraries (ROOT49). The main two components in
this category are T49SumGaus , which implements the fit function and
the group of classes T49Container , T49Index and T49DedxInfo which are
used to store the histograms and the results of the fitting.
All of the software comes in two versions: one has 4 particle
types: , , and while the other has deuterons as well,
so 5 particle types. When making this transition, the parameters in
the fit function were renumbered, so the two versions are
incompatible. Make sure that you are using a consistent set of programs.
Marco van Leeuwen