Motivation:

Is there more jet in high multiplicity?
Is mean pt higher in high multiplicity? 

Dataset:

run 12 pp 200GeV

trigger:
TOF4 (tofmult>50, no vpd requirement)

See drupal.star.bnl.gov/STAR/blog/yili/run12-pp-200gev-high-multiplicity-trigger for BTOFMatch and vpdVz
 

QA plot:

Ratio of Pt distribution for events with Number of Primary tracks > 50 and < 50

Conclusion: 
High multiplicity event does have more higher pt particles, bias towards jet.