Excited QCD 2015

Session

Wednesday Afternoon

Mar 11, 2015, 4:30 PM

Tatranska Lomnica, Slovakia

Conveners

Wednesday Afternoon

• Tom COHEN

34. Heavy ions at the LHC

Andre Mischke (Utrecht University (NL))

3/11/15, 4:30 PM

Ultra-relativistic collisions of heavy ions allow studying strongly interacting matter at extreme energy densities and temperatures. Quantum-Chromodynamics predicts that at such conditions normal, hadronic matter turns into a plasma of deconfined quarks and gluons, which are the constituents of atomic nuclei. In cosmology, it is believed that matter in the early universe must have existed in...

23. $\pi \eta$ photoproduction on the nucleon

Dr Lukasz Bibrzycki (Pedagogical University of Cracow)

3/11/15, 5:00 PM

We present the Born amplitudes for the pi eta photoproduction on the nucleon. These amplitudes and the corresponding partial wave amplitudes are essential for the description of the photoproduction of isovector resonances with masses below 2 GeV. Some of these resonances, in particular $a_0(980)$ and $a_0(1450)$ are believed to have a substantial mollecular admixture. These mollecular states...

38. Tetraquark bound states in a Bethe-Salpeter approach

Gernot Eichmann

3/11/15, 6:00 PM

I will present results for tetraquark masses in the covariant Dyson-Schwinger/Bethe-Salpeter approach. We study two setups: in the first one, the system is simplified to a coupled diquark/antidiquark-meson/meson equation. In the second case we solve a genuine four-body equation where quarks interact via gluon exchange. In both cases we find a light scalar-isoscalar state in the ~500 MeV...

15. Flow anisotropies due to momentum deposition from hard partons

Boris Tomasik (Univerzita Mateja Bela (SK))

3/11/15, 6:30 PM

Anisotropies of transverse expansion flow in ultrarelativistic nuclear collisions are nowadays precisely measured and potentially carry important information about the transport properties of hot deconfined matter. In order to extract this information reliably from data analysis one must take into account other effects which can cause flow anisotropies. Hard partons, produced copiously at the...