Comparing MC Models to Hi Statistics Charm
- Studies primarily undertaken to compare Pythia 5.6/Jetset to Pythia 6
- Although fragmentation and pgf physics has intrinsic interest and led to E687 publications
- We also are trying to get a good tune of adjustable parameters to best match our data a reasonable priority might be
- Match P and Pt spectra for K?, K2?, K3?, Ds?KK?, PK?, D*?(K?) ? D*?(K3?) ?
- Most direct influence on acceptance , resolution , and triggering
- Match observed yields of K?, K2?, K3?, Ds?KK?, PK?, D*?(K?) ? , D*?(K3?) ?
- Certify the simulation of the recoil charm state which influences:
- Trigger eff, primary vertex smearing, Cerenk/EM/HC confusion + leptons
- Match the multiplicity , momentum, and particle id of primary vertex tracks
- Controls DVERT acceptance, influences trigger, and Cerenk/EM/HC confusion
- Match the charm-anticharm asymmetry
- Powerful probe of fragmentation but little (?) influence on efficiency /triggering etc