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HK: Physik der Hadronen und Kerne

HK 33: Heavy Ions IV

HK 33.6: Talk

Wednesday, March 13, 2002, 15:15–15:30, E

Rescattering in Heavy Ion Collisions - Charge Fluctuations — •Michael Döring^1,2,3 and Volker Koch^1,2 — ¹Theory Group, GSI, Planckstrasse 1, 64291 Darmstadt — ²Nuclear Theory Group, LBNL, Cyclotron Rd. 1, 94720 Berkeley — ³University of Münster, Dep. of Theoretical Physics, 48149 Münster

One major goal in heavy ion collisions is to produce evidence of the quark gluon plasma (QGP). A possible signature is reduced charge fluctuation due to the fractional charge of the quarks in the QGP. In the hadronic phase fluctuations may be screened or enhanced caused by hadronic interaction. Using an effective Lagrangian based on vector dominance, we calculate the charge fluctuations up to second order in a hot pion gas applying finite temperature field theory.