Publications
Publication Information
| Title | $\pi^-p\to\eta^{(\prime)}\, \pi^- p$ in the double Regge region |
| Authors | CESAR FERNANDEZ RAMIREZ, Vincent Mathieu, Mikhail Mikhasenko, Miguel Albaladejo, Astrid Hiller Blin, Alessandro Pilloni |
| JLAB number | JLAB-THY-21-3354 |
| LANL number | arXiv:2104.10646 |
| Other number | DOE/OR/23177-5172 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for European Physical Journal C Volume 81 Page(s) 647 Refereed | |
| Publication Abstract: | The production of $\eta^{(\prime)}\pi$ pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to $\eta^{(\prime)}\pi$ production above the resonance region is required to impose additional constraints to the resonance extraction. We consider the reaction $\pi^-p\to \pi^-\eta^{(\prime)} \,p$ measured by COMPASS. We show that the data in $2.4 < m_{\eta^{(\prime)}\pi} < 3.0\gev$ can be described by amplitudes based on double Regge exchanges. The angular distribution of the meson pairs, in particular in the $\eta' \pi$ channel, can be attributed to flavor singlet exchanges, suggesting the presence of a large gluon content that couples strongly to the produced mesons. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1140/epjc/s10052-021-09420-1 |
| Accepted Manuscript: | Bibrzycki2021_Article_Pi-pRightarrowEtaPrimePi-P¿-p¿.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |