Hot Quarks 2014

Session

Session 10

26 Sept 2014, 17:30

Conveners

Session 10: Photons & Dileptons

• Rainer Fries (Texas A&M University)

25. Multiplicity dependence of transverse momentum correlations in p-Pb at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV and Pb-Pb at $\sqrt{s_{\mathrm{NN}}}=$ at 2.76 TeV

Dr Prabhat Pujahari (Wayne State University)

26/09/2014, 17:30

Correlations and fluctuations

Experimental

Two-particle correlations provide information about particle production mechanisms in heavy-ion collisions. We report on the study of two particle transverse momentum correlations ($\Delta p_{\rm T} \Delta p_{\rm T}$) in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 2.76 TeV and in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV measured with the ALICE detector at LHC. Unlike the number...

19. Effects of quark chemical equilibration on thermal photon elliptic flow

Dr Akihiko Monnai (RIKEN BNL Research Center)

26/09/2014, 17:50

Theory

Large hadronic elliptic flow $v_2$ is an evidence for the existence of a strongly-coupled QGP fluid in high-energy heavy-ion collisions. Since the medium is electromagnetically transparent, thermal photon $v_2$ was speculated to be much smaller than hadronic ones due to the contribution from the earlier stages where azimuthal flow is small. However, it has recently been found to be much larger...

18. Heat- and Electric Conductivity of the Quark-Gluon Plasma

Mr Moritz Greif (Goethe University Frankfurt)

26/09/2014, 18:10

Theory

The study of transport coefficients of the Quark-Gluon Plasma (QGP) provides useful comparisons amongst different theories and models, and gives physical insights into the microscopic details of the QGP. We work with the partonic transport model BAMPS (Z. Xu and C. Greiner, Phys. Rev. C, pp. 1–121, 2005.), solving the relativistic Boltzmann equation for several species of charged partons....

50. Low mass dimuon production in pp, p-Pb and Pb-Pb collisions with the ALICE muon spectrometer

Ester Anna Rita Casula (Universita e INFN (IT))

26/09/2014, 18:50

Heavy flavor, dileptons and photons

Experimental

Low mass vector meson ($\rho$, $\omega$, $\phi$) production provides key information on the hot and dense state of strongly interacting matter produced in high-energy heavy ion collisions (called Quark Gluon Plasma). Strangeness enhancement is one of the possible signatures of the Quark Gluon Plasma formation and can be accessed through the measurement of $\phi$ meson production with respect...

65. Low-Mass Dielectron Production in pp, p-Pb and Pb-Pb Collisions with ALICE

Patrick Simon Reichelt (Johann-Wolfgang-Goethe Univ. (DE))

26/09/2014, 19:10

Heavy flavor, dileptons and photons

Experimental

The measurement of electron-positron pairs (dielectrons) in the low invariant mass region allows studying the vacuum and in-medium properties of light vector mesons. Additionally, low-mass dielectrons are produced by internal conversion of virtual direct photons. They are excellent direct probes to study all collision stages, since they pass through the created medium almost unaffected. To...

61. Dilepton production in transport-based approaches

Janus Weil (FIAS)

26/09/2014, 19:30

Heavy flavor, dileptons and photons

Theory

Lepton pairs are an excellent probe for matter at high densities and temperatures. In particular they provide a rather direct access to the in-medium self energy of vector mesons, which is believed to be dominated by baryonic effects. We perform transport-based simulations with the GiBUU and UrQMD models to investigate dilepton production in a wide energy range and show that baryonic...