Wallner, S. (2024) Strange-Meson Spectroscopy with COMPASS. Il nuovo cimento C, 47 (4). pp. 1-5. ISSN 1826-9885
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Abstract
While the spectrum of non-strange light mesons is well known, many predicted strange mesons have not yet been observed, and many potentially observed states require further confirmation. Using the K− component of the hadron beam at the M2 beamline at CERN, we study the strange-meson spectrum with the COMPASS experiment. The flagship channel is the K−π−π+ final state, for which COMPASS has obtained the world’s largest sample. Based on this sample, we have performed the most detailed and comprehensive partial-wave analysis of this final state to date. For example, we observe a clear signal from the well-known K∗2 (1430), and for the first time we study the K2(1770), K2(1820), and K2(2250) in a single analysis. We also find evidence for a supernumerary signal called K(1630), suggesting that this signal is a pseudoscalar exotic strange meson.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 11 Sep 2024 15:17 |
| Last Modified: | 11 Sep 2024 15:17 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23097 |
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