Momentum measurement

Measurement with Multiple Coulomb Scattering

There are many algorithms in FEDRA for momentum measurement through MCS. The code is written in src/libEdr/EdbMomentumEstimator.h. The function PMS() launch the algorithm according to parameter eAlg:

• eAlg 0: PMSang (eTrack): default version, modified by Magali at the end of 2008

• eAlg 1: PMSang_base (eTrack): original version (Momentum estimation by multiple scattering (Annecy algorithm Oct-2007))

• eAlg 2: PMSang_base_A (eTrack): include asymmetrical errors in scattering VS ncell graphs, based on ChiSquare distribution

• eAlg 3: PMScoordinate (eTrack): momentum estimation by coordinate method

• eAlg 4: PSMang_corr (eTrack): with corrections by Ash

Momentum measurement with PMSang was used also in SHiP-charm by Valerio