Wed·Nov 8, 2017Wednesday·November 8, 2017

1. 01*

   Recent results and future of the NA61/SHINE strong interactions program

   Bartosz Lysakowski🇵🇱

   NA61/SHINE is a fixed target experiment at the CERN Super-Proton- Synchrotron. The main goals of the experiment are to discover the critical point of strongly interacting matter and study the properties of the onset of deconfnement. In order to reach these goals the collaboration studies hadron production properties in nucleus-nucleus, proton-proton and proton-nucleus interactions. In this talk, recent results on particle production in p+p interactions, as well as Be+Be and Ar+Sc collisions in the SPS energy range are reviewed. The results are compared with available world data. The future of the NA61/SHINE scientifc program is also presented.

   nucl-exhep-exActa Phys.Polon.B(2018)·0 citations
2. 02*

   Quantum self-organization and nuclear collectivities

   T. Otsuka🇯🇵 · Y. Tsunoda🇯🇵 · T. Togashi🇯🇵 · N. Shimizu🇯🇵 · T. Abe🇯🇵

   The quantum self-organization is introduced as one of the major underlying mechanisms of the quantum many-body systems, for instance, atomic nuclei. It is shown that atomic nuclei are not necessarily like simple rigid vases containing almost free nucleons, in contrast to the naive Fermi liquid picture. Nuclear forces are demonstrated to be rich enough to change single-particle energies for each eigenstate, so as to enhance the relevant collective mode. When the quantum self-organization occurs, single-particle energies can be self-organized (or self-optimized), being enhanced by (i) two quantum liquids, e.g., protons and neutrons, (ii) two major force components, e.g., quadrupole interaction (to drive collective mode) and monopole interaction (to control resistance). Type II shell evolution is considered to be a simple visible case involving excitations across a (sub)magic gap. Actual cases such as shape coexistence, quantum phase transition, octupole vibration/deformation, super deformation, etc. can be studied with this scope. The quantum self-organization becomes more important in heavier nuclei where the number of active orbits and the number of active nucleons are larger. With larger numbers of them, the effects of the organization can be more significant. The quantum self-organization is a general phenomenon, and is expected to be found in other quantum systems.

   ↳ nucl-thnucl-exJ.Phys.Conf.Ser.(2018)·4 citations
3. 03*

   Charmed meson and baryon measurements in pp and p-Pb collisions with ALICE at the LHC

   Jaime Norman (for the ALICE collaboration)🇬🇧

   We present here recent open heavy-flavour results from the ALICE experiment, including measurements of D-meson, ${\mathrm{\Lambda }}_{\mathrm{c}}^{+}$ baryon and ${\mathrm{\Xi }}_{\mathrm{c}}^0$ baryon production in pp collisions at $\sqrt{s}=7\mathrm{TeV}$ and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02\mathrm{TeV}$.

   ↳ hep-exnucl-exEPJ Web Conf.(2018)·1 citation
4. 04*

   Probing the hadronic phase with resonances of different lifetimes in Pb-Pb collisions with ALICE

   Neelima Agrawal (on behalf of ALICE collaboration)🇮🇳

   The ALICE experiment has measured the production of a rich set of hadronic resonances, such as $\rho (770{)}^0$, ${\mathrm{K}}^{\ast }(892{)}^0$, $\varphi$(1020), ${\Sigma }^{\pm }$(1385), $\Lambda (1520)$ and ${\Xi }^{\ast 0}$ in pp, p-Pb and Pb-Pb collisions at various energies at the LHC. A comprehensive overview and the latest results are presented in this paper. Special focus is given to the role of hadronic resonances for the study of final-state effects in high-energy collisions. In particular, the measurement of resonance production in heavy-ion collisions has the capability to provide insight into the existence of a prolonged hadronic phase after hadronisation. The observation of the suppression of the production of $\Lambda (1520)$ resonance in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV adds further support to the existence of such a dense hadronic phase, as already evidenced by the ratios ${\mathrm{K}}^{\ast }(892{)}^0$/$\mathrm{K}$ and $\rho (770{)}^0$/$\pi$.

   ↳ hep-exnucl-exEPJ Web Conf.(2018)·2 citations
5. 05*

   Azimuthal angle dependence of the charge imbalance from charge conservation effects

   Piotr Bozek🇵🇱

   The experimental search for the chiral magnetic effect in heavy-ion collisions is based on charge dependent correlations between emitted particles. Recently, a sensitive observable comparing event-by-event distributions of the charge splitting projected on the directions along and perpendicular to the direction of the elliptic flow has been proposed. The results of a 3+1-dimensional hydrodynamic model show that the preliminary experimental data of the STAR Collaboration can be explained as due to background effects, such as resonance decays and local charge conservation in the particle production. A related observable based on the third order harmonic flow is proposed to further investigate such background effects in charge dependent correlations.

   ↳ nucl-thnucl-exPRC(2018)·16 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.