Fri·Nov 3, 2017Friday·November 3, 2017

1. 01*

   Sequential Strangeness Freeze-out

   Rene Bellwied🇺🇸

   I will describe the latest results from lattice QCD pertaining to a potential flavour hierarchy in the hadronic freeze-out from the QCD crossover region. I will compare these results to a variety of improved hadronic resonance gas calculations and to experimental data of fluctuations of net-charge, net-proton and net-kaon multiplicity distributions, which serve as a proxy for the susceptibilities of conserved quantum numbers on the lattice. I will conclude that there is intriguing evidence for a flavour dependent freeze-out, and I will suggest expansions to the experimental program at RHIC and the LHC that could potentially demonstrate the impact of a flavour separation during hadronization.

   nucl-exnucl-thEPJ Web Conf.(2018)·16 citations
2. 02*

   High-Precision Half-life Measurement for the Superallowed Fermi ${\beta }^{+}$ Emitter ${}^{22}$Mg

   M. R. Dunlop🇨🇦 · C. E. Svensson🇨🇦 · G. C. Ball🇨🇦 · J. R. Leslie🇨🇦 · C. Andreoiu🇨🇦 · N. Bernier🇨🇦 · H. Bidaman🇨🇦 · V. Bildstein · M. Bowry🇺🇸 · C. Burbadge🇨🇦 · R. Caballero-Folch🇪🇸 · A. Diaz Varela🇨🇦 and 14 other authors

   A high-precision half-life measurement for the superallowed Fermi ${\beta }^{+}$ emitter ${}^{22}$Mg was performed at the TRIUMF-ISAC facility using a 4$\pi$ proportional gas counter. The result of $T_{1/2}=3.87400\pm 0.00079$ s is a factor of 3 more precise than the previously adopted world average and resolves a discrepancy between the two previously published ${}^{22}$Mg half-life measurements.

   nucl-exPRC(2017)·6 citations
3. 03*

   Investigating the quark flavor dependence of the chiral magnetic effect with a multiphase transport model

   Ling Huang🇨🇳 · Chun-Wang Ma🇨🇳 · Guo-Liang Ma🇨🇳

   Because the properties of the QCD phase transition and the chiral magnetic effect (CME) depend on the number of quark flavors ($N_f$) and quark mass, relativistic heavy-ion collisions provide a natural environment to investigate the flavor features if quark deconfinement occurs. We introduce an initial two-flavor or three-flavor dipole charge separation into a multiphase transport (AMPT) model to investigate the flavor dependence of the CME. By taking advantage of the recent ALICE data of charge azimuthal correlations with identified hadrons, we attempt to disentangle two-flavor and three-flavor CME scenarios in Pb+Pb collisions at 2.76 TeV. We find that the experimental data show a certain potential to distinguish the two scenarios, therefore we further suggest to collect more data to clarify the possible flavor dependence in future experiments.

   ↳ nucl-thhep-phnucl-exPRC(2018)·9 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.