Wed·Nov 21, 2018Wednesday·November 21, 2018

1. 01*

   PHENIX results on collision energy dependent Levy HBT correlations from $\sqrt{s_{NN}}$ = 15 to 200 GeV

   Daniel Kincses (for the PHENIX Collaboration)🇭🇺

   Different regions on the QCD phase diagram can be investigated by varying the collision energy and the centrality in heavy-ion collisions. In our latest measurements at the PHENIX experiment at RHIC, we utilize Lévy-type sources to describe the measured HBT correlation functions. In this paper we report the current status of the analysis of the centrality and beam energy dependence of the Lévy source parameters in Au+Au collisions from $\sqrt{s_{NN}}$ = 15 GeV to $\sqrt{s_{NN}}$ = 200 GeV.

   nucl-exActa Phys.Polon.Supp.(2019)·2 citations
2. 02*

   Nucleon-to-Roper electromagnetic transition form factors at large-$Q^2$

   Chen Chen🇧🇷 · Ya Lu🇨🇳 · Daniele Binosi🇮🇹 · Craig D. Roberts🇺🇸 · Jose Rodríguez-Quintero🇪🇸 · Jorge Segovia🇪🇸

   High-precision nucleon-resonance electroproduction data on a large kinematic domain of energy and momentum transfer have proven crucial in revealing novel features of strong interactions within the Standard Model and unfolding structural details of baryon excited states. Thus, in anticipation of new data reaching to unprecedented photon virtuality, we employ a quark-diquark approximation to the three valence-quark bound-state problem to compute ${\gamma }^{\ast }p\to R^{+}$ and ${\gamma }^{\ast }n\to R^0$ transition form factors on $Q^2/m_N^2\in [0,12]$, where $m_N$ is the nucleon mass. Having simultaneously analysed both charged and neutral channels, we also provide a quark-flavour separation of the transition form factors. The results should be useful in planning new-generation experiments.

   ↳ nucl-thhep-lathep-phnucl-exPRD(2019)·65 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.