"Flavoring the quark-gluon soup with charm" via teleconference

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Date/Time:Thursday, 22 Apr 2010 from 4:00 pm to 5:00 pm
Location:Zaffarano A 401
Contact:James Vary ()
Phone:515-294-8894
Channel:Nuclear Physics
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Giorgio Torrieri, Institut für Theoretische Physik, JW Goethe Universität, Frankfurt AM, Germany

We demonstrate that a Quark-Gluon Plasma (QGP) with a dilute admixture of heavy quarks has, in general, a lower speed of sound than a ``pure'' QGP without effects from heavy flavors. The change in the speed of sound is sensitive to the details of the theory, making the hydrodynamic response to ``flavoring'' a sensitive probe of the underlying microscopic dynamics. We suggest that this effect may be measured in ultrarelativistic heavy ion collisions by relating the event-by-event number of charm quarks to flow observables such as the average transverse momentum.