class HMdcTrackingEff: public HReconstructor

 Default constructor calls the function setParContainers().

 Constructor calls the constructor of class HReconstructor with the name
 and the title as arguments. It also calls the function setParContainers().

 destructor deletes the iterator

 init of all variables

 Sets rootfile output of HMdcTrackinEf where ntuples were written.

 get pointer to segments and index values for TrkCand
 mode ==0 both segments are done
 mode ==1 inner segment is done + indseg2=-2

 retrieves the Geant ID, parentTrack , generatorInfo,
 generatorInfo1 and generatorInfo2 for Geant track trkNr

 checks if the Geant trkNr of inner and outer segment is the same
 mode==0 both segments are checked
 mode==1 inner segment is checked

 checks if the Geant trkNr of inner and outer segment is the same
 if only inner segment is available only this is checked
 if both segments are there both are checked
 a loop over all candidates is performed
 if the match of outer segment in all candidates fails
 the first object of trkCand is used
 if no match is found 0 is returned.
 the indexes of both segments are stored in iSeg. indseg==-1 means
 the segment has not been found. indseg==-2 says thare have been
 candidates, but none of them mathed the trk number.

 decodes the generatorinfo1 into a string for printing

 checks if a lepton track comes from
 the same source

 resets the first n slots of indextable

 fills the index table for track track_ct
 the maxium number of tracks is maxTrks.
 the tracks are stored in format
 indexTable[track_ct*sizeInd+xi]=varx where xi=0-sizeInd and varx are the
 values in the following table:
 indKine, indSeg1_id, indSeg2_id, indSeg1, indSeg2, indUsed
 0        1           2           3        4        5
 parentTrk, geantInfo, geantInfo1, geantInfo2
 6          7          8           9

 prints one slot track_ct to the screen

 returns the slot in indexTable which contains a partner track
 to track i from the same decay (pair)
 if nothing is found -1 is returned
 the found tracks are marked in the table as used
 self combinations are rejected.

 checks if track has been used in pair

 indKine, indSeg1_id, indSeg2_id, indSeg1, indSeg2, indUsed
 0        1           2           3        4        5
 parentTrk, geantInfo, geantInfo1, geantInfo2
 6          7          8           9

 indKine, indSeg1_id, indSeg2_id, indSeg1, indSeg2, indUsed
 0        1           2           3        4        5
 parentTrk, geantInfo, geantInfo1, geantInfo2
 6          7          8           9

 search meta (shower and meta) for the same Geant track
 in sector sector.
 return codes:
 -1 if nothing has been found
 -2 if showerhit has been found in other sector
 -3 if tofhit has been found in other sector
 0 if hit has been found in shower (system 0)
 1 if hit has been found in tof    (system 1)

 fills vector v with one leg of a pair from slot in indextable with segment information
 type has to be 0 (segment from ideal tracking) or 1 (segments from reconstruction)

 fills vector v with one leg of a pair from slot in indextable with kine information

 Convert geant mom to MDC phi/theta angle in degree

 Convert phi from TLorentzVector to phi Lab in degree

 Convert theta from TLorentzVector to theta Lab in degree

 Convert MDC phi angle to the lab coordinate system  and degree

 transform theta of vector to lab system and degree

 transform phi of vector to lab system and degree