Publications
Publication Information
| Title | Proton-$n^\prime$ interactions at threshold |
| Authors | Alexei Anisovich, Volker Burkert, Michael Dugger, Eberhard Klempt, V. Nikonov, Barry Ritchie, Andrey Sarantsev, Ulrike Thoma |
| JLAB number | JLAB-PHY-18-2684 |
| LANL number | arXiv:1803.06814 |
| Other number | DOE/OR/23177-4416 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physics Letters B Volume 785 Page(s) 626-630 Refereed | |
| Publication Abstract: | Recent data on photoproduction of $\eta'$ mesons off protons have been included in the data base for the Bonn-Gatchina partial wave analysis. The real and imaginary parts of the $S$-wave $\eta^\prime p\to \eta^\prime p$ scattering amplitude in the threshold region were fit to yield the $\eta^\prime p$ scattering length and the interaction range. This new analysis found $|a_{\eta^\prime p}|= (0.403\pm 0.015\pm 0.060)$ fm and a phase $\phi=(87\pm2)^\circ$, while the range parameter is not well-constrained. The striking behavior of the GRAAL data on the beam asymmetry in the threshold region suggests that a narrow proton-$\eta'$ resonance might exist. However, the scattering length was found to be relatively insensitive to the possible existence of this narrow resonance. |
| Experiment Numbers: | |
| Group: | Hall B |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2018.06.034 |
| Accepted Manuscript: | 1-s2.0-S0370269318304908-main.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |