K - Pp bound system at J-PARC
(2020) In AIP Conference Proceedings 2249(1).- Abstract
- The K̄NN bound system, symbolically denoted as "K-pp", is the simplest K̄-nuclear bound system which has been widely discussed as a consequence of the strongly attractive K̄N interaction in I = 0 channels. Many theoretical works have pointed out the existence of the "K-pp" bound system, but the calculated properties such as the binding energy and the width spread out due to the uncertainty of the K̄N interaction below the K̄+N mass threshold. Experimentally, there are several reports on observation of a "K-pp" candidate with the binding energy of around 100 MeV, however, no definitive evidence was available so far. At J-PARC, we conducted a experimental search for the "K-pp" bound system using K- + 3He reaction at 1.0 GeV/c where the... (More)
- The K̄NN bound system, symbolically denoted as "K-pp", is the simplest K̄-nuclear bound system which has been widely discussed as a consequence of the strongly attractive K̄N interaction in I = 0 channels. Many theoretical works have pointed out the existence of the "K-pp" bound system, but the calculated properties such as the binding energy and the width spread out due to the uncertainty of the K̄N interaction below the K̄+N mass threshold. Experimentally, there are several reports on observation of a "K-pp" candidate with the binding energy of around 100 MeV, however, no definitive evidence was available so far. At J-PARC, we conducted a experimental search for the "K-pp" bound system using K- + 3He reaction at 1.0 GeV/c where the "K-pp" is expected to be directly produced via the (K-, n) reaction. We finally observed a bound state below the K- +p+p mass threshold in the Λpn final state, which can be interpreted as the "K- pp" bound state. The possible existence of the "K- pp" state is discussed from both aspects of production and decay. © 2020 Author(s). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2e82d2d0-3e64-4374-b646-854731accab8
- author
- Sakuma, Fuminori ; Tatsuno, Hideyuki LU and Zmeskal, Johannes
- author collaboration
- organization
- publishing date
- 2020
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon
- series title
- AIP Conference Proceedings
- volume
- 2249
- issue
- 1
- article number
- 020005
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:85089419627
- ISSN
- 0094-243X
- ISBN
- 978-0-7354-2008-3
- DOI
- 10.1063/5.0008808
- language
- English
- LU publication?
- yes
- id
- 2e82d2d0-3e64-4374-b646-854731accab8
- date added to LUP
- 2020-08-24 10:57:00
- date last changed
- 2023-12-04 19:12:37
@inproceedings{2e82d2d0-3e64-4374-b646-854731accab8, abstract = {{The K̄NN bound system, symbolically denoted as "K-pp", is the simplest K̄-nuclear bound system which has been widely discussed as a consequence of the strongly attractive K̄N interaction in I = 0 channels. Many theoretical works have pointed out the existence of the "K-pp" bound system, but the calculated properties such as the binding energy and the width spread out due to the uncertainty of the K̄N interaction below the K̄+N mass threshold. Experimentally, there are several reports on observation of a "K-pp" candidate with the binding energy of around 100 MeV, however, no definitive evidence was available so far. At J-PARC, we conducted a experimental search for the "K-pp" bound system using K- + 3He reaction at 1.0 GeV/c where the "K-pp" is expected to be directly produced via the (K-, n) reaction. We finally observed a bound state below the K- +p+p mass threshold in the Λpn final state, which can be interpreted as the "K- pp" bound state. The possible existence of the "K- pp" state is discussed from both aspects of production and decay. © 2020 Author(s).}}, author = {{Sakuma, Fuminori and Tatsuno, Hideyuki and Zmeskal, Johannes}}, booktitle = {{Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon}}, isbn = {{978-0-7354-2008-3}}, issn = {{0094-243X}}, language = {{eng}}, number = {{1}}, publisher = {{American Institute of Physics (AIP)}}, series = {{AIP Conference Proceedings}}, title = {{K - Pp bound system at J-PARC}}, url = {{http://dx.doi.org/10.1063/5.0008808}}, doi = {{10.1063/5.0008808}}, volume = {{2249}}, year = {{2020}}, }