Conveners
QGP in Small Systems I
- Jiangyong Jia (State University of New York (US))
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Prof. Charles Gale (McGill University)28/09/2015, 17:00QGP in Small SystemsContributed talkSignatures usually associated with hydrodynamic behavior have been recently observed in high and intermediary multiplicity proton-nucleus (pA) collisions at the LHC. Even though these signals suggest the creation of a strongly coupled quark-gluon plasma (QGP) in such collisions, they do not represent concrete proof. In order to better address this problem, other signals must be...Go to contribution page
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Guo-Liang Ma (Shanghai INstitute of Applied Physics (SINAP), CAS)28/09/2015, 17:20QGP in Small SystemsContributed talkWe show that the incoherent elastic scattering of partons, as present in a multi-phase transport model (AMPT), with a modest parton-parton cross-section of $\sigma$=1.5-3 mb, naturally explains the long-range two-particle azimuthal correlations as observed in p+p and p+Pb collisions for all measured $N_{track}$ and $p_T$ bins by the LHC-CMS experiment [1]. We calculate the elliptic, $v_2$, and...Go to contribution page
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Guy Paic (Universidad Nacional Autonoma (MX))28/09/2015, 17:40QGP in Small SystemsContributed talkMulti-parton interactions (MPI) and color reconnection (CR) have raised special interest due to the fact that they can produce QGP-like effects in small systems, specifically, flow-like patterns. Now we will show that the same mechanisms produce an explicit dependence of the $p_{\rm T}$ spectra with the number of constituent quarks. In addition, a Cronin-like peak, at intermediate transverse...Go to contribution page
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Quan Wang (University of Kansas (US))28/09/2015, 18:00QGP in Small SystemsContributed talkPrevious CMS measurements have demonstrated the collective nature of multiparticle correlations in high-multiplicity pPb collisions at the LHC. This collectivity is consistent with a hydrodynamic flow origin. However, it can also be interpreted in terms of initial state effects arising from gluon saturation. The pseudorapidity dependence of the azimuthal Fourier coefficients ($v_n$) is...Go to contribution page
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Antonio Ortiz Velasquez (Universidad Nacional Autonoma (MX))28/09/2015, 18:20QGP in Small SystemsContributed talkParticle ratios provide insight into the hadrochemistry of the event and the mechanisms for particle production. In Pb-Pb collisions the relative multi-strange baryon yields exhibit an enhancement with respect to pp collisions, whereas the short-lived K$^{*0}$ resonance is suppressed in the most central events due to re-scattering. Measurements in p-Pb allow us to investigate the development...Go to contribution page
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shengli huang (PHENIX Collaboration)28/09/2015, 18:40QGP in Small SystemsContributed talkCollisions of light with heavy ions have been considered control experiments for heavy ion collisions, but measurements of long-range azimuthal correlations of light hadrons in $p(d)$+A collisions at RHIC and LHC challenge this assumption. Hydrodynamic model calculations have been successful in describing experimental results, though alternative explanations involving...Go to contribution page