Abstract

Abstract. We measured πE invariant mass spectra below and above the K¯N mass threshold in the K−d → NπE reaction in order to study the K¯N interaction and the Λ(1405) resonance. This reaction can be described by the two-step process: (i) K¯N1 → K¯N followed by (ii) K¯N2 → πΣ, where N1 and N2 are nucleons bound in the deuteron. We deduced the S -wave scattering amplitude of K¯N →K¯N in the framework of the K¯N πΣ coupled channel so as to reproduce the observed πΣ spectra in the I = 0 channel. We found a resonance pole at 1417.7-7.4+6.0 (fitting error)-1.0+1.1 (systematic error) - i[26.9-7.9+6.0 (fitting error)-2.0+1.7 (systematic error)]MeV/c2.

Details

Title
Measurement of KN scattering below the KN mass threshold
Author
Noumi, Hiroyuki; Inoue, Kentaro; Kawasaki, Shingo; Aikawa, Shuu; Ajimura, Shuhei; Akaishi, Takaya; Asano, Hidemitsu; Beer, George; Berucci, Carolina; Bragadireau, Mario; Buehler, Paul Alois; Busso, Luigi; Cargnelli, Michael; Choi, Seonho; Curceanu, Catalina; Enomoto, Shun; Fujioka, Hiroyuki; Fujiwara, Yuya; Fukuda, Tomokazu; Guaraldo, Carlo; Hashimoto, Tadashi; Hayano, Ryugo S; Hiraiwa, Toshihiko; Iio, Masami; Iliescu, Mihai; Ishiguro, Yusuke; Ishimoto, Shigeru; Ishikawa, Takashi; Ithashi, Kenta; Iwai, Massaki; Iwasaki, Masahiko; Kanno, Koki; Kato, Kazuma; kato, Yuko; Kienle, Paul; Komatsu, Yusuke; Kou, Hiroshi; Ma, Yue; Marton, Johann; Matsuda, Yasuyuki; MIzoi, Yutaka; Morra, Ombretta; Murayama, Rie; To-mofumi Nagae; Ohnishi, Hiroaki; Okada, Shinji; Zhadyra Omar; Outa, Haruhiko; Piscicchia, Kristian; Sada, Yuta; Sakaguchi, Atsushi; Sakuma, Fuminori; Sato, Masaharu; Scordo, Alessadro; Sekimoto, Michiko; Shi, Hexi; Shirotori, Kotaro; Sirghi, Diana; Sirghi, Florin; Suzuki, Ken; Suzuki, Shoji; Suzuki, Takatoshi; Tanida, Kiyoshi; Tatsuno, Hideyuki; Tokiyasu, Atsushi O; Tokuda, Makoto; Tomono, Dai; Toyoda, Akihisa; Tsukada, Kyo; Vazquez-Doce, Oton; Widmann, Eberhard; Yamaga, Takumi; Yamazaki, Toshimitsu; Yim, Heejoong; Zhang, Qi; Zmeskal, Johannes
Section
Hyperon-Nucleon Interactions
Publication year
2024
Publication date
2024
Publisher
EDP Sciences
ISSN
21016275
e-ISSN
2100014X
Source type
Conference Paper
Language of publication
English
DOI
https://doi.org/10.1051/epjconf/202429105011
ProQuest document ID
2928355200
Copyright
© 2024. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.