STAR Heavy Quark Physics

Huan Zhong Huang and Thomas Ullrich

For the Heavy Quark Working Group

STAR Collaboration Meeting Feb 25-Mar 1, 2003

Brookhaven National Laboratory

Broad Physics ProgramOpen Charm (and Beauty?):

1) Constrain the gluon structure function of the collidingnuclei through the g+gc+cbar process,

2) Empirical parton flux normalization for quarkoniums,3) Charm quark evolution dynamics in the partonic state

transverse radial flow, elliptic flow (?)4) Charm at high pT, is there a ‘dead cone’ effect?

Quarkonium:1) Production dynamics from bulk quark matter

increased (coalescence) or suppressed (melting)?2) Possible color screening dynamics in color medium

(and no screening for family?)

And Many More !

STAR system is not yet optimized for heavy quark physics !

STAR Future Detectors Dear to Heavy Quark Physics

1) Full Barrel EMCGreatly enhance the quarkonium capability

2) Full TOF Barrel (STAR TOF Proposal)Will allow STAR to explore open charm physics using event-mixing technique

3) MicroVertex Detector (H. Wieman et al)Full exploration of charm physics program

STAR will be charmer than PHENIX on charm physics

Direct

Decay electrons PHENIX

STAR

Fig: S. Batsouli nucl-th/0212068

Short Term Effort (relevant for d+Au and next year Au+Au)

1) L0/L2 Trigger for J/ enhancement(Manuel, Thomas, + Trigger Group--Hank,

Falk, Zoran + DAQ—Tonka, Jeff L.)Manuel’s talk

2) Electron PID using EMC-TPC for offline analyses

3) Explore open charm possibility (d+Au)

4) L0/L2/L3 for Au+Au(Next year Au+Au run may be our best hope

for a solid measurement)

Parallel Session: Thursday 9:00-12:00 Room 2-78

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