Mon·Jan 15, 2018Monday·January 15, 2018

1. 01*

   Production of D${}_{{}_{\mathrm{S}}}$ meson in Au+Au collision at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV

   Md Nasim (for the STAR Collaboration)🇺🇸

   We present the invariant yield and elliptic flow of D${}_{{}_{\mathrm{S}}}$ as a function of transverse momentum in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV. The nuclear modification factors of D${}_{{}_{\mathrm{S}}}$ are found to be systematically higher than those of K${}_{{}_{\mathrm{S}}}^0$ . The ratio between the yields of strange and non-strange open charm mesons is shown. We find that such a ratio in 0-40$\%$ central Au+Au collisions is higher than the fragmentation baseline. Our measurement indicates a substantial enhancement of D${}_{{}_{\mathrm{S}}}$ production in Au+Au collisions with respect to p+p collisions as compared to non-strange D mesons. The elliptic flow of D${}_{{}_{\mathrm{S}}}$ is also measured and compared to that of D${}^0$ as well as model calculations.

   nucl-exPoS(2018)·2 citations
2. 02*

   The Gamow-state description of the decay energy spectrum of neutron-unbound ${}^{25}$O

   R.M. Id Betan🇦🇷 · R. de la Madrid🇺🇸

   We show the feasibility of calculating the decay energy spectrum of neutron emitting nuclei within the Gamow-state description of resonances by obtaining the decay energy spectrum of ${}^{25}$O. We model this nucleus as a valence neutron interacting with an ${}^{24}$O inert core, and we obtain the resulting resonant energies, widths and decay energy spectra for the ground and first excited states. We also discuss the similarities and differences between the decay energy spectrum of a Gamow state and the Breit-Wigner distribution with energy-dependent width.

   ↳ nucl-thnucl-exNPA(2018)·8 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.