Thu·Feb 26, 2015Thursday·February 26, 2015

1. 01*

   Branching Ratios for the Decay of $d^{\ast }(2380)$

   M. Bashkanov🇩🇪 · H. Clement🇩🇪 · T. Skorodko🇷🇺

   Based on measurements the branching ratios for the decay of the recently discovered dibaryon resonance $d^{\ast }(2380)$ into two-pion production channels and into the $np$ channel are evaluated. Possibilities for a decay into the isoscalar single-pion channel are discussed. Finally also the electromagnetic decay of $d^{\ast }(2380)$ is considered.

   nucl-exhep-phEPJA(2015)·49 citations
2. 02*

   Low-Energy Antinucleon-Nucleus Interaction Revisited

   E. Friedman🇮🇱

   Annihilation cross sections of antiprotons and antineutrons on the proton between 50 and 400 MeV/c show Coulomb focusing below 200 MeV/c and almost no charge-dependence above 200 MeV/c. Similar comparisons for heavier targets are not possible for lack of overlap between nuclear targets studied with $\bar{p}$ and $\bar{n}$ beams. Interpolating between $\bar{p}$-nucleus annihilation cross sections with the help of an optical potential to compare with $\bar{n}$-nucleus annihilation cross sections reveal unexpected features of Coulomb interactions in the latter. Direct comparisons between $\bar{n}$-nucleus and $\bar{p}$-nucleus annihilations at very low energies could be possible if $\bar{p}$ cross sections are measured on the same targets and at the same energies as the available cross sections for $\bar{n}$. Such measurements may be feasible in the foreseeable future.

   ↳ nucl-thnucl-exHyperfine Interact.(2015)·4 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.