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Calendar of Physics Talks Vienna
| In-medium eta' mass reduction in Au+Au collisions at RHIC |
| Speaker: | T. Csorgo (Department of Physics, Harvard University, Cambridge, MA and MTA KFKI RMKI, Budapest, Hungary ) |
| Abstract: | In relativistic heavy ion collisions at RHIC, BNL, USA, a perfectly
flowing fluid of quarks, the strongly interacting Quark Gluon Plasma was
identified
in February 2010. The characteristic initial temperatures Tinit exceed 300
MeV, they are significantly above the Hagedorn limit of 170 MeV above
which temperature hadrons as we know them may not exist. In this talk I
first summarize the milestones of the RHIC heavy ion program, then I will
focus on a recent analyzes of PHENIX and STAR data on the intercept
parameter of the two-pion Bose-Einstein correlation functions in
sqrt(s_{NN}) = 200 GeV Au+Au collisions in terms of different models. To
describe this combined PHENIX and STAR dataset, an in-medium eta' mass
reduction of at least 200 MeV was needed, at the 99.9 % confidence level
in the considered model class. Such a significant eta' mass modification
may indicate the restoration of the U_A(1) symmetry in a hot and dense
hadronic matter and the return of the 9th "prodigal" Goldstone boson.
References:
T. Csörgő, R. Vértesi, J. Sziklai, Phys.Rev.Lett.105:182301,2010
R. Vértesi, T. Csörgő, J. Sziklai, Nucl.Phys.A830:631c-632c,2009
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| Date: | Tue, 11.01.2011 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Institut für Hochenergiephysik, Nikolsdorfergasse 18, Bibliothek |
| Contact: | Dietrich Liko |
| Euklidische Green-Funktionen und das Osterwalder-Schrader-Theorem |
| Speaker: | Hans-Linus Pfau und Peter Poier (Univ. Wien) (Fakultät für Physik) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 11.01.2011 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | J. Yngvason |
| On the principle of symmetric criticaliy I |
| Speaker: | Helmuth Urbantke (Wien) (Fakultät für Physik) |
| Abstract: | im Rahmen des Literaturseminars |
| Date: | Thu, 13.01.2011 |
| Time: | 13:30 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe: Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock |
| Contact: | P. Chrusciel |
| Alpha_s determinations and DIS fits |
| Speaker: | Johannes Blümlein (DESY Zeuthen) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Thu, 13.01.2011 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | A. Hoang, H. Neufeld |
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