pith. sign in

arxiv: 2504.09470 · v1 · pith:JRH246CDnew · submitted 2025-04-13 · ✦ hep-ex · hep-ph

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with J^P=0^-

G. D. Alexeev , M. G. Alexeev , C. Alice , A. Amoroso , V. Andrieux , V. Anosov , K. Augsten , W. Augustyniak
show 156 more authors
C. D. R. Azevedo B. Badelek R. Beck J. Beckers Y. Bedfer J. Bernhard F. Bradamante A. Bressan W.-C. Chang C. Chatterjee M. Chiosso S.-U. Chung A. Cicuttin M. L. Crespo D. D'Ago S. Dalla Torre S. S. Dasgupta S. Dasgupta F. Delcarro I. Denisenko O. Yu. Denisov S. V. Donskov N. Doshita Ch. Dreisbach W. D\"unnweber R. R. Dusaev D. Ecker P. Faccioli M. Faessler M. Finger M. Finger jr. H. Fischer K. J. Fl\"othner W. Florian J. M. Friedrich V. Frolov L.G. Garcia Ord\`onez O. P. Gavrichtchouk S. Gerassimov J. Giarra D. Giordano A. Grasso A. Gridin M. Grosse Perdekamp B. Grube M. Gr\"uner A. Guskov P. Haas D. von Harrach M. Hoffmann N. d'Hose C.-Y. Hsieh S. Ishimoto A. Ivanov T. Iwata V. Jary R. Joosten E. Kabu\ss F. Kaspar A. Kerbizi B. Ketzer G. V. Khaustov J. H. Koivuniemi V. N. Kolosov K. Kondo Horikawa I. Konorov A. Yu. Korzenev A. M. Kotzinian O. M. Kouznetsov A. Koval F. Krinner F. Kunne K. Kurek R. P. Kurjata G. Kurten K. Lavickova S. Levorato Y.-S. Lian J. Lichtenstadt P.-J. Lin R. Longo V. E. Lyubovitskij A. Maggiora N. Makke G. K. Mallot A. Maltsev A. Martin J. Marzec J. Matou\v{s}ek T. Matsuda C. Menezes Pires F. Metzger W. Meyer M. Mikhasenko E. Mitrofanov D. Miura Y. Miyachi R. Molina A. Moretti A. Nagaytsev D. Neyret M. Niemiec J. Nov\'y W.-D. Nowak G. Nukazuka A. G. Olshevsky M. Ostrick D. Panzieri B. Parsamyan S. Paul H. Pekeler J.-C. Peng M. Pe\v{s}ek D. V. Peshekhonov M. Pe\v{s}kov\'a S. Platchkov J. Pochodzalla V. A. Polyakov C. Quintans G. Reicherz C. Riedl D. I. Ryabchikov A. Rychter A. Rymbekova V. D. Samoylenko A. Sandacz S. Sarkar I. A. Savin G. Sbrizzai H. Schmieden A. Selyunin S. Seriubin L. Sinha D. Sp\"ulbeck A. Srnka M. Stolarski M. Sulc H. Suzuki S. Tessaro F. Tessarotto A. Thiel F. Tosello A. Townsend V. Tskhay B. Valinoti B. M. Veit J.F.C.A. Veloso A. Vijayakumar M. Virius M. Wagner S. Wallner K. Zaremba M. Zavertyaev M. Zemko E. Zemlyanichkina M. Ziembicki
This is my paper
classification ✦ hep-ex hep-ph
keywords statesstrangecrypto-exoticfirstreactionspectrumstatestrange-meson
0
0 comments X
read the original abstract

We measured the strange-meson spectrum in the scattering reaction $K^{-}+p \rightarrow K^{-}\pi^{-}\pi^{-}+p$ with the COMPASS spectrometer at CERN. Using the world's largest sample of this reaction, we performed a comprehensive partial-wave analysis of the mesonic final state. It substantially extends the strange-meson spectrum covering twelve states with masses up to 2.4 GeV/$c^2$. We observe the first candidate for a crypto-exotic strange meson with $J^{P}=0^{-}$ and find $K_3$ and $K_4$ states consistent with predictions for the ground states.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Measurements of transverse-momentum dependent effects in semi-inclusive DIS at COMPASS

    hep-ex 2026-05 unverdicted novelty 4.0

    New COMPASS data from polarized deuteron targets reduce uncertainties on d-quark transversity by a factor of 2.5 at large Bjorken x and will enable first extraction of the Boer-Mulders function from unpolarized nucleon data.

  2. QCD sum rule analysis of local meson-meson currents for the $K(1690)$ state

    hep-ph 2026-04 unverdicted novelty 4.0

    QCD sum rules with local meson-meson currents for the K(1690) consistently predict masses around 2 GeV or above, disfavoring a molecular interpretation in favor of a compact multiquark state.

  3. Production of high-orbital kaon excited states in the $K^{-}p$ reaction

    hep-ph 2026-06 unverdicted novelty 3.0

    An effective Lagrangian approach calibrated with one adjustable parameter from data reproduces cross sections for K3*(1780), K2(1820), K2(1770) and K4*(2045) and predicts sizable forward-peaked production for addition...