Add IS_ID and IS_ABS_ID ThOr functors
Add ISID and ISABSID ThOr functors to filter on true ID (or abs(ID)) of a particle. Goes with LHCb!3374 (merged)
Edited by Anton Poluektov
Add ISID and ISABSID ThOr functors to filter on true ID (or abs(ID)) of a particle. Goes with LHCb!3374 (merged)