The first dataset used in this analysis is run11 pp 500 GeV.
Jet reconstruction may case not of time, thus the strategy is reconstruct J/psi first, if there is a ee candidate the Jet reconstruction will be done on this event.

J/psi-Jet correlation for Unlike-sign and Like-sign are very similar, It may doubt by using Unlike-sign - Jet correlation minus the like-sign correlation to get the J/psi correlation. In addition, the J/psi residual (~10%) is also hard to reduce. To get rid of this, I sliced phi (phi_j/psi - phi_jet) in each of the dphi bin, I filled am invariant mass
distribution. In this invariant mass distribution, I can extract the J/psi yield.
The details of J/psi yield extraction are:
1. UnLike-sign - Like-sign