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Spectroscopic study of the Λ(1405) resonance via the d (K-, n) reaction at J-PARC

Asano, H. ; Aikawa, S. ; Ajimura, S. ; Akaishi, T. ; Beer, G. ; Berucci, C. ; Bragadireanu, M. ; Buehler, P. ; Busso, L. and Cargnelli, M. , et al. (2019) 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 2130.
Abstract

The structure of the Λ(1405) hyperon is an important and long-standing issue related to the K̄-nucleus interaction. The J-PARC E31 experiment has been performed to investigate the Λ(1405) spectrum shape. Because it is hard to form the Λ(1405) directly by a K̄N scattering in free space, E31 uses the d(K-, n) reaction with an incident kaon momentum of 1 GeV/c. We will identify three final states - ς-π+, ς+π-, ς0π0-so that the isospin structure of hyperon resonance states produced can be decomposed. The first physics run of the E31 experiment was performed in 2016. To enhance the statistics of the data set, we have performed the second physics run in the beginning of 2018. During the... (More)

The structure of the Λ(1405) hyperon is an important and long-standing issue related to the K̄-nucleus interaction. The J-PARC E31 experiment has been performed to investigate the Λ(1405) spectrum shape. Because it is hard to form the Λ(1405) directly by a K̄N scattering in free space, E31 uses the d(K-, n) reaction with an incident kaon momentum of 1 GeV/c. We will identify three final states - ς-π+, ς+π-, ς0π0-so that the isospin structure of hyperon resonance states produced can be decomposed. The first physics run of the E31 experiment was performed in 2016. To enhance the statistics of the data set, we have performed the second physics run in the beginning of 2018. During the second run of E31, around 3.9×1010 kaons impacted on the deuteron target.

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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
editor
Schumacher, Reinhard and Tang, Liguang
volume
2130
article number
040018
publisher
American Institute of Physics (AIP)
conference name
13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
conference location
Portsmouth, United States
conference dates
2018-06-24 - 2018-06-29
external identifiers
  • scopus:85070299850
ISBN
9780735418721
DOI
10.1063/1.5118415
language
English
LU publication?
yes
id
2e663a97-ac65-4d71-be9c-77b8a6fcf219
date added to LUP
2019-08-29 12:48:03
date last changed
2023-12-03 22:53:29
@inproceedings{2e663a97-ac65-4d71-be9c-77b8a6fcf219,
  abstract     = {{<p>The structure of the Λ(1405) hyperon is an important and long-standing issue related to the K̄-nucleus interaction. The J-PARC E31 experiment has been performed to investigate the Λ(1405) spectrum shape. Because it is hard to form the Λ(1405) directly by a K̄N scattering in free space, E31 uses the d(K<sup>-</sup>, n) reaction with an incident kaon momentum of 1 GeV/c. We will identify three final states - ς<sup>-</sup>π+, ς+π<sup>-</sup>, ς<sup>0</sup>π<sup>0</sup>-so that the isospin structure of hyperon resonance states produced can be decomposed. The first physics run of the E31 experiment was performed in 2016. To enhance the statistics of the data set, we have performed the second physics run in the beginning of 2018. During the second run of E31, around 3.9×10<sup>10</sup> kaons impacted on the deuteron target.</p>}},
  author       = {{Asano, H. and Aikawa, S. and Ajimura, S. and Akaishi, T. and Beer, G. and Berucci, C. and Bragadireanu, M. and Buehler, P. and Busso, L. and Cargnelli, M. and Choi, S. and Curceanu, C. and Enomoto, S. and Fujioka, H. and Fujiwara, Y. and Fukuda, T. and Guaraldo, C. and Hashimoto, T. and Hayano, R. S. and Hiraiwa, T. and Iio, M. and Iliescu, M. and Inoue, K. and Ishiguro, Y. and Ishikawa, T. and Ishimoto, S. and Itahashi, K. and Iwai, M. and Iwasaki, M. and Kanno, K. and Kato, K. and Kato, Y. and Kawasaki, S. and Kienle, P. and Komatsu, Y. and Kou, H. and Ma, Y. and Marton, J. and Matsuda, Y. and Mizoi, Y. and Morra, O. and Nagae, T. and Noumi, H. and Ohnishi, H. and Okada, S. and Omar, Z. and Outa, H. and Piscicchia, K. and Sada, Y. and Sakaguchi, A. and Sakuma, F. and Sato, M. and Scordo, A. and Sekimoto, M. and Shi, H. and Shirotori, K. and Sirghi, D. and Sirghi, F. and Suzuki, K. and Suzuki, S. and Suzuki, T. and Tanida, K. and Tatsuno, H. and Tokiyasu, A. O. and Tokuda, M. and Tomono, D. and Toyoda, A. and Tsukada, K. and Doce, O. Vazquez and Widmann, E. and Yamaga, T. and Yamazaki, T. and Yim, H. and Zhang, Q. and Zmeskal, J.}},
  booktitle    = {{13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018}},
  editor       = {{Schumacher, Reinhard and Tang, Liguang}},
  isbn         = {{9780735418721}},
  language     = {{eng}},
  month        = {{07}},
  publisher    = {{American Institute of Physics (AIP)}},
  title        = {{Spectroscopic study of the Λ(1405) resonance via the d (K<sup>-</sup>, n) reaction at J-PARC}},
  url          = {{http://dx.doi.org/10.1063/1.5118415}},
  doi          = {{10.1063/1.5118415}},
  volume       = {{2130}},
  year         = {{2019}},
}