| Issue |
EPJ Web Conf.
Volume 274, 2022
XVth Quark Confinement and the Hadron Spectrum Conference (ConfXV)
|
|
|---|---|---|
| Article Number | 03010 | |
| Number of page(s) | 8 | |
| Section | 3 - Parallel Track B | |
| DOI | https://doi.org/10.1051/epjconf/202227403010 | |
| Published online | 22 December 2022 | |
https://doi.org/10.1051/epjconf/202227403010
Strange-Meson Spectroscopy – from COMPASS to AMBER
Max-Planck-Institut für Physik, 80805 Munich, Germany
* e-mail: swallner@mpp.mpg.de
Published online: 22 December 2022
COMPASS is a multi-purpose fixed-target experiment at CERN’s M2 beam line aimed at studying the structure and spectrum of hadrons. It has collected the so far world’s largest data set on diffractive production of the K−π−π+ final state, which in principle gives access to all strange mesons. Based on this data set, we performed an elaborate partial-wave analysis. It reveals signals in the mass region of well-known states, such as the K*2(1430). In addition, we found indications for a resonance-like signal in the mass region of the K(1630). This state would be a supernumerary state and hence could be a candidate for an exotic strange meson. The partial-wave analysis is limited in some areas by the limited kinematic coverage of the final-state particle identification of the COMPASS setup. To overcome this limitation, we propose a new high-precision strange-meson spectroscopy measurement at the AMBER experiment, which will be located at CERN’s M2 beam line.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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