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Allow for Massive Missing Particles in TupleToolCorrectedMass

Ned Francis Howarth requested to merge nhowarth/my-changes into run2-patches

Adding a few lines to TupleToolCorrectedMass so that missing particles with mass can be included in mass reconstructions. This is for an analysis of Lb -> LcLc~n where we are considering the neutron a missing particle. Unless explicitly stated the mass of the invisible particle is by default 0 and the TupleTool acts as it was previously, so users do not have to specify M_invis = 0.

Adding lines like this in the options file will result in non 0 invisible mass.

dtt.M_n.MassInvisible = 939.56542052 * MeV
Edited by Eduardo Rodrigues

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