Physics Letters B (Feb 2023)
Pole position of Λ(1405) measured in d(K−,n)πΣ reactions
- S. Aikawa,
- S. Ajimura,
- T. Akaishi,
- H. Asano,
- G. Beer,
- C. Berucci,
- M. Bragadireanu,
- P. Buehler,
- L. Busso,
- M. Cargnelli,
- S. Choi,
- C. Curceanu,
- S. Enomoto,
- H. Fujioka,
- Y. Fujiwara,
- T. Fukuda,
- C. Guaraldo,
- T. Hashimoto,
- R.S. Hayano,
- T. Hiraiwa,
- M. Iio,
- M. Iliescu,
- K. Inoue,
- Y. Ishiguro,
- S. Ishimoto,
- T. Ishikawa,
- K. Itahashi,
- M. Iwai,
- M. Iwasaki,
- K. Kanno,
- K. Kato,
- Y. Kato,
- S. Kawasaki,
- P. Kienle,
- Y. Komatsu,
- H. Kou,
- Y. Ma,
- J. Marton,
- Y. Matsuda,
- Y. Mizoi,
- O. Morra,
- R. Murayama,
- T. Nagae,
- H. Noumi,
- H. Ohnishi,
- S. Okada,
- Z. Omar,
- H. Outa,
- K. Piscicchia,
- Y. Sada,
- A. Sakaguchi,
- F. Sakuma,
- M. Sato,
- A. Scordo,
- M. Sekimoto,
- H. Shi,
- K. Shirotori,
- D. Sirghi,
- F. Sirghi,
- K. Suzuki,
- S. Suzuki,
- T. Suzuki,
- K. Tanida,
- H. Tatsuno,
- A.O. Tokiyasu,
- M. Tokuda,
- D. Tomono,
- A. Toyoda,
- K. Tsukada,
- O. Vazquez-Doce,
- E. Widmann,
- T. Yamaga,
- T. Yamazaki,
- H. Yim,
- Q. Zhang,
- J. Zmeskal
Affiliations
- S. Aikawa
- Department of Physics, Tokyo Institute of Technology, Tokyo, 152-0551, Japan; RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- S. Ajimura
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan
- T. Akaishi
- Department of Physics, Osaka University, Toyonaka, 560-0043, Japan
- H. Asano
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- G. Beer
- Department of Physics and Astronomy, University of Victoria, Victoria BC V8W 3P6, Canada
- C. Berucci
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- M. Bragadireanu
- Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Magurele, Romania
- P. Buehler
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- L. Busso
- INFN Sezione di Torino, Torino, Italy; Dipartimento di Fisica Generale, Universita'di Torino, Torino, Italy
- M. Cargnelli
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- S. Choi
- Department of Physics, Seoul National University, Seoul, 151-742, South Korea
- C. Curceanu
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy
- S. Enomoto
- Accelerator Laboratory, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- H. Fujioka
- Department of Physics, Tokyo Institute of Technology, Tokyo, 152-0551, Japan
- Y. Fujiwara
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
- T. Fukuda
- Laboratory of Physics, Osaka Electro-Communication University, Neyagawa, 572-8530, Japan; RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, 351-0198, Japan
- C. Guaraldo
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy
- T. Hashimoto
- ASRC, Japan Atomic Energy Agency (JAEA), Ibaraki 319-1195, Japan
- R.S. Hayano
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
- T. Hiraiwa
- RIKEN SPring-8 Center, RIKEN, Hyogo, 679-5148, Japan
- M. Iio
- Cryogenics Science Center, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- M. Iliescu
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy
- K. Inoue
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan; Corresponding authors at: Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan.
- Y. Ishiguro
- Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
- S. Ishimoto
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- T. Ishikawa
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
- K. Itahashi
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- M. Iwai
- Mechanical Engineering Center, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- M. Iwasaki
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan; Department of Physics, Tokyo Institute of Technology, Tokyo, 152-0551, Japan
- K. Kanno
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
- K. Kato
- Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
- Y. Kato
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- S. Kawasaki
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan; Corresponding authors at: Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan.
- P. Kienle
- Technische Universität München, D-85748, Garching, Germany
- Y. Komatsu
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- H. Kou
- Department of Physics, Tokyo Institute of Technology, Tokyo, 152-0551, Japan
- Y. Ma
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- J. Marton
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- Y. Matsuda
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan
- Y. Mizoi
- Laboratory of Physics, Osaka Electro-Communication University, Neyagawa, 572-8530, Japan
- O. Morra
- INFN Sezione di Torino, Torino, Italy
- R. Murayama
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- T. Nagae
- Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
- H. Noumi
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan; Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan; Corresponding authors at: Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan.
- H. Ohnishi
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai, 982-0826, Japan
- S. Okada
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- Z. Omar
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan; Department of Physics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
- H. Outa
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- K. Piscicchia
- Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”, Piazza del Viminale 1, 00184 Rome, Italy; INFN, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, 00044 Frascati, Italy
- Y. Sada
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai, 982-0826, Japan
- A. Sakaguchi
- Department of Physics, Osaka University, Toyonaka, 560-0043, Japan
- F. Sakuma
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- M. Sato
- Accelerator Laboratory, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- A. Scordo
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy
- M. Sekimoto
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- H. Shi
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy
- K. Shirotori
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan
- D. Sirghi
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy; Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Magurele, Romania
- F. Sirghi
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy; Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Magurele, Romania
- K. Suzuki
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- S. Suzuki
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- T. Suzuki
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
- K. Tanida
- ASRC, Japan Atomic Energy Agency (JAEA), Ibaraki 319-1195, Japan
- H. Tatsuno
- Department of Chemical Physics, Lund University, Lund, 221 00, Sweden
- A.O. Tokiyasu
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai, 982-0826, Japan
- M. Tokuda
- Department of Physics, Tokyo Institute of Technology, Tokyo, 152-0551, Japan
- D. Tomono
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047, Japan
- A. Toyoda
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
- K. Tsukada
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai, 982-0826, Japan
- O. Vazquez-Doce
- Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy; Excellence Cluster University, Technische Universität München, D-85748, Garching, Germany
- E. Widmann
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- T. Yamaga
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- T. Yamazaki
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan; Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
- H. Yim
- Korea Unstitute of Radiological and Medical Sciences (KIRAMS), Seoul, 139-706, South Korea
- Q. Zhang
- RIKEN Cluster for Pioneering Research (CPR), RIKEN, Wako, 351-0198, Japan
- J. Zmeskal
- Stefan-Meyer-Institut für subatomare Physik, A-1030 Vienna, Austria
- Journal volume & issue
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Vol. 837
p. 137637
Abstract
We measured a set of π±Σ∓, π0Σ0, and π−Σ0 invariant mass spectra below and above the K¯N mass threshold in K−-induced reactions on deuteron. The measured πΣ mass spectral shape is well reproduced via the two-step mechanism, i.e., a neutron knocked out at a forward angle from a deuteron by an incident K−, with the K¯ recoiled backward reacting with the residual nucleon to produce π and Σ. We deduced the S-wave K¯N→πΣ and K¯N→K¯N scattering amplitudes in the isospin 0 channel in the framework of a K¯N and πΣ coupled channel. We find that a resonance pole corresponding to Λ(1405) is located at 1417.7−7.4+6.0 (fitting errors)−1.0+1.1 (systematic errors) + [−26.1−7.9+6.0 (fitting errors)−2.0+1.7 (systematic errors)] i MeV/c2, closer to the K¯N mass threshold than the value determined by the Particle Data Group.
