K - Pp bound system at J-PARC

Fuminori Sakuma; Shuhei Ajimura; Hidemitsu Asano; George Beer; Carolina Berucci; Hyoungchan Bhang; Mario Bragadireanu; Paul Buehler; Luigi Busso; Michael Cargnelli; Seonho Choi; Catalina Curceanu; Shun Enomoto; Hiroyuki Fujioka; Yuya Fujiwara; Tomokazu Fukuda; Carlo Guaraldo; Tadashi Hashimoto; Ryugo S. Hayano; Toshihiko Hiraiwa; Masami Iio; Mihai Iliescu; Kentaro Inoue; Yosuke Ishiguro; Takashi Ishikawa; Shigeru Ishimoto; Kenta Itahashi; Masahiko Iwasaki; Koki Kanno; Kazuma Kato; Yuko Kato; Shingo Kawasaki; Paul Kienle; Hiroshi Kou; Yue Ma; Johann Marton; Yasuyuki Matsuda; Yutaka Mizoi; Ombretta Morra; Tomofumi Nagae; Hiroyuki Noumi; Hiroaki Ohnishi; Shinji Okada; Haruhiko Outa; Kristian Piscicchia; Yuta Sada; Atsushi Sakaguchi; Masaharu Sato; Alessandro Scordo; Michiko Sekimoto; Hexi Shi; Kotaro Shirotori; Diana Sirghi; Florin Sirghi; Ken Suzuki; Shoji Suzuki; Takatoshi Suzuki; Kiyoshi Tanida; Hideyuki Tatsuno; Makoto Tokuda; Dai Tomono; Akihisa Toyoda; Kyo Tsukada; Oton Vázquez Doce; Eberhard Widmann; Takumi Yamaga; Toshimitsu Yamazaki; Qi Zhang; Johannes Zmeskal

doi:10.1063/5.0008808

K ^- Pp bound system at J-PARC

Fuminori Sakuma, Shuhei Ajimura, Hidemitsu Asano, George Beer, Carolina Berucci, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, Luigi Busso, Michael Cargnelli, Seonho Choi, Catalina Curceanu, Shun Enomoto, Hiroyuki Fujioka, Yuya Fujiwara, Tomokazu Fukuda, Carlo Guaraldo, Tadashi Hashimoto, Ryugo S. Hayano, Toshihiko HiraiwaMasami Iio, Mihai Iliescu, Kentaro Inoue, Yosuke Ishiguro, Takashi Ishikawa, Shigeru Ishimoto, Kenta Itahashi, Masahiko Iwasaki, Koki Kanno, Kazuma Kato, Yuko Kato, Shingo Kawasaki, Paul Kienle, Hiroshi Kou, Yue Ma, Johann Marton, Yasuyuki Matsuda, Yutaka Mizoi, Ombretta Morra, Tomofumi Nagae, Hiroyuki Noumi, Hiroaki Ohnishi, Shinji Okada, Haruhiko Outa, Kristian Piscicchia, Yuta Sada, Atsushi Sakaguchi, Masaharu Sato, Alessandro Scordo, Michiko Sekimoto, Hexi Shi, Kotaro Shirotori, Diana Sirghi, Florin Sirghi, Ken Suzuki, Shoji Suzuki, Takatoshi Suzuki, Kiyoshi Tanida, Hideyuki Tatsuno, Makoto Tokuda, Dai Tomono, Akihisa Toyoda, Kyo Tsukada, Oton Vázquez Doce, Eberhard Widmann, Takumi Yamaga, Toshimitsu Yamazaki, Qi Zhang, Johannes Zmeskal

Research Center for Electron Photon Science (ELPH)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The K^̄NN bound system, symbolically denoted as "K^-pp", is the simplest K^̄-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.

Original language	English
Title of host publication	Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon
Editors	Curtis Meyer, Reinhard A. Schumacher
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735420083
DOIs	https://doi.org/10.1063/5.0008808
Publication status	Published - 2020 Jul 27
Event	15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019 - Pittsburgh, United States Duration: 2019 Jun 2 → 2019 Jun 7

Publication series

Name	AIP Conference Proceedings
Volume	2249
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019
Country/Territory	United States
City	Pittsburgh
Period	19/6/2 → 19/6/7

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/5.0008808

Cite this

Sakuma, F., Ajimura, S., Asano, H., Beer, G., Berucci, C., Bhang, H., Bragadireanu, M., Buehler, P., Busso, L., Cargnelli, M., Choi, S., Curceanu, C., Enomoto, S., Fujioka, H., Fujiwara, Y., Fukuda, T., Guaraldo, C., Hashimoto, T., Hayano, R. S., ... Zmeskal, J. (2020). K ^- Pp bound system at J-PARC. In C. Meyer, & R. A. Schumacher (Eds.), Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon [020005] (AIP Conference Proceedings; Vol. 2249). American Institute of Physics Inc.. https://doi.org/10.1063/5.0008808

K ^- Pp bound system at J-PARC. / Sakuma, Fuminori; Ajimura, Shuhei; Asano, Hidemitsu; Beer, George; Berucci, Carolina; Bhang, Hyoungchan; Bragadireanu, Mario; Buehler, Paul; 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; Inoue, Kentaro; Ishiguro, Yosuke; Ishikawa, Takashi; Ishimoto, Shigeru; Itahashi, Kenta; Iwasaki, Masahiko; Kanno, Koki; Kato, Kazuma; Kato, Yuko; Kawasaki, Shingo; Kienle, Paul; Kou, Hiroshi; Ma, Yue; Marton, Johann; Matsuda, Yasuyuki; Mizoi, Yutaka; Morra, Ombretta; Nagae, Tomofumi; Noumi, Hiroyuki; Ohnishi, Hiroaki; Okada, Shinji; Outa, Haruhiko; Piscicchia, Kristian; Sada, Yuta; Sakaguchi, Atsushi; Sato, Masaharu; Scordo, Alessandro; Sekimoto, Michiko; Shi, Hexi; Shirotori, Kotaro; Sirghi, Diana; Sirghi, Florin; Suzuki, Ken; Suzuki, Shoji; Suzuki, Takatoshi; Tanida, Kiyoshi; Tatsuno, Hideyuki; Tokuda, Makoto; Tomono, Dai; Toyoda, Akihisa; Tsukada, Kyo; Doce, Oton Vázquez; Widmann, Eberhard; Yamaga, Takumi; Yamazaki, Toshimitsu; Zhang, Qi; Zmeskal, Johannes.

Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon. ed. / Curtis Meyer; Reinhard A. Schumacher. American Institute of Physics Inc., 2020. 020005 (AIP Conference Proceedings; Vol. 2249).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sakuma, F, Ajimura, S, Asano, H, Beer, G, Berucci, C, Bhang, H, Bragadireanu, M, Buehler, P, Busso, L, Cargnelli, M, Choi, S, Curceanu, C, Enomoto, S, Fujioka, H, Fujiwara, Y, Fukuda, T, Guaraldo, C, Hashimoto, T, Hayano, RS, Hiraiwa, T, Iio, M, Iliescu, M, Inoue, K, Ishiguro, Y, Ishikawa, T, Ishimoto, S, Itahashi, K, Iwasaki, M, Kanno, K, Kato, K, Kato, Y, Kawasaki, S, Kienle, P, Kou, H, Ma, Y, Marton, J, Matsuda, Y, Mizoi, Y, Morra, O, Nagae, T, Noumi, H, Ohnishi, H, Okada, S, Outa, H, Piscicchia, K, Sada, Y, Sakaguchi, A, Sato, M, Scordo, A, Sekimoto, M, Shi, H, Shirotori, K, Sirghi, D, Sirghi, F, Suzuki, K, Suzuki, S, Suzuki, T, Tanida, K, Tatsuno, H, Tokuda, M, Tomono, D, Toyoda, A, Tsukada, K, Doce, OV, Widmann, E, Yamaga, T, Yamazaki, T, Zhang, Q & Zmeskal, J 2020, K ^- Pp bound system at J-PARC. in C Meyer & RA Schumacher (eds), Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon., 020005, AIP Conference Proceedings, vol. 2249, American Institute of Physics Inc., 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019, Pittsburgh, United States, 19/6/2. https://doi.org/10.1063/5.0008808

Sakuma, Fuminori ; Ajimura, Shuhei ; Asano, Hidemitsu ; Beer, George ; Berucci, Carolina ; Bhang, Hyoungchan ; Bragadireanu, Mario ; Buehler, Paul ; 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 ; Inoue, Kentaro ; Ishiguro, Yosuke ; Ishikawa, Takashi ; Ishimoto, Shigeru ; Itahashi, Kenta ; Iwasaki, Masahiko ; Kanno, Koki ; Kato, Kazuma ; Kato, Yuko ; Kawasaki, Shingo ; Kienle, Paul ; Kou, Hiroshi ; Ma, Yue ; Marton, Johann ; Matsuda, Yasuyuki ; Mizoi, Yutaka ; Morra, Ombretta ; Nagae, Tomofumi ; Noumi, Hiroyuki ; Ohnishi, Hiroaki ; Okada, Shinji ; Outa, Haruhiko ; Piscicchia, Kristian ; Sada, Yuta ; Sakaguchi, Atsushi ; Sato, Masaharu ; Scordo, Alessandro ; Sekimoto, Michiko ; Shi, Hexi ; Shirotori, Kotaro ; Sirghi, Diana ; Sirghi, Florin ; Suzuki, Ken ; Suzuki, Shoji ; Suzuki, Takatoshi ; Tanida, Kiyoshi ; Tatsuno, Hideyuki ; Tokuda, Makoto ; Tomono, Dai ; Toyoda, Akihisa ; Tsukada, Kyo ; Doce, Oton Vázquez ; Widmann, Eberhard ; Yamaga, Takumi ; Yamazaki, Toshimitsu ; Zhang, Qi ; Zmeskal, Johannes. / K ^- Pp bound system at J-PARC. Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon. editor / Curtis Meyer ; Reinhard A. Schumacher. American Institute of Physics Inc., 2020. (AIP Conference Proceedings).

@inproceedings{797771ff5a4a4c3c94483a8ca5c30009,

title = "K - Pp bound system at J-PARC",

abstract = "The {\=K}NN bound system, symbolically denoted as {"}K-pp{"}, is the simplest {\=K}-nuclear bound system which has been widely discussed as a consequence of the strongly attractive {\=K}N 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 {\=K}N interaction below the {\=K}+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.",

author = "Fuminori Sakuma and Shuhei Ajimura and Hidemitsu Asano and George Beer and Carolina Berucci and Hyoungchan Bhang and Mario Bragadireanu and Paul Buehler and Luigi Busso and Michael Cargnelli and Seonho Choi and Catalina Curceanu and Shun Enomoto and Hiroyuki Fujioka and Yuya Fujiwara and Tomokazu Fukuda and Carlo Guaraldo and Tadashi Hashimoto and Hayano, {Ryugo S.} and Toshihiko Hiraiwa and Masami Iio and Mihai Iliescu and Kentaro Inoue and Yosuke Ishiguro and Takashi Ishikawa and Shigeru Ishimoto and Kenta Itahashi and Masahiko Iwasaki and Koki Kanno and Kazuma Kato and Yuko Kato and Shingo Kawasaki and Paul Kienle and Hiroshi Kou and Yue Ma and Johann Marton and Yasuyuki Matsuda and Yutaka Mizoi and Ombretta Morra and Tomofumi Nagae and Hiroyuki Noumi and Hiroaki Ohnishi and Shinji Okada and Haruhiko Outa and Kristian Piscicchia and Yuta Sada and Atsushi Sakaguchi and Masaharu Sato and Alessandro Scordo and Michiko Sekimoto and Hexi Shi and Kotaro Shirotori and Diana Sirghi and Florin Sirghi and Ken Suzuki and Shoji Suzuki and Takatoshi Suzuki and Kiyoshi Tanida and Hideyuki Tatsuno and Makoto Tokuda and Dai Tomono and Akihisa Toyoda and Kyo Tsukada and Doce, {Oton V{\'a}zquez} and Eberhard Widmann and Takumi Yamaga and Toshimitsu Yamazaki and Qi Zhang and Johannes Zmeskal",

note = "Publisher Copyright: {\textcopyright} 2020 Author(s).; 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019 ; Conference date: 02-06-2019 Through 07-06-2019",

year = "2020",

month = jul,

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doi = "10.1063/5.0008808",

language = "English",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

editor = "Curtis Meyer and Schumacher, {Reinhard A.}",

booktitle = "Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon",

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TY - GEN

T1 - K - Pp bound system at J-PARC

AU - Sakuma, Fuminori

AU - Ajimura, Shuhei

AU - Asano, Hidemitsu

AU - Beer, George

AU - Berucci, Carolina

AU - Bhang, Hyoungchan

AU - Bragadireanu, Mario

AU - Buehler, Paul

AU - Busso, Luigi

AU - Cargnelli, Michael

AU - Choi, Seonho

AU - Curceanu, Catalina

AU - Enomoto, Shun

AU - Fujioka, Hiroyuki

AU - Fujiwara, Yuya

AU - Fukuda, Tomokazu

AU - Guaraldo, Carlo

AU - Hashimoto, Tadashi

AU - Hayano, Ryugo S.

AU - Hiraiwa, Toshihiko

AU - Iio, Masami

AU - Iliescu, Mihai

AU - Inoue, Kentaro

AU - Ishiguro, Yosuke

AU - Ishikawa, Takashi

AU - Ishimoto, Shigeru

AU - Itahashi, Kenta

AU - Iwasaki, Masahiko

AU - Kanno, Koki

AU - Kato, Kazuma

AU - Kato, Yuko

AU - Kawasaki, Shingo

AU - Kienle, Paul

AU - Kou, Hiroshi

AU - Ma, Yue

AU - Marton, Johann

AU - Matsuda, Yasuyuki

AU - Mizoi, Yutaka

AU - Morra, Ombretta

AU - Nagae, Tomofumi

AU - Noumi, Hiroyuki

AU - Ohnishi, Hiroaki

AU - Okada, Shinji

AU - Outa, Haruhiko

AU - Piscicchia, Kristian

AU - Sada, Yuta

AU - Sakaguchi, Atsushi

AU - Sato, Masaharu

AU - Scordo, Alessandro

AU - Sekimoto, Michiko

AU - Shi, Hexi

AU - Shirotori, Kotaro

AU - Sirghi, Diana

AU - Sirghi, Florin

AU - Suzuki, Ken

AU - Suzuki, Shoji

AU - Suzuki, Takatoshi

AU - Tanida, Kiyoshi

AU - Tatsuno, Hideyuki

AU - Tokuda, Makoto

AU - Tomono, Dai

AU - Toyoda, Akihisa

AU - Tsukada, Kyo

AU - Doce, Oton Vázquez

AU - Widmann, Eberhard

AU - Yamaga, Takumi

AU - Yamazaki, Toshimitsu

AU - Zhang, Qi

AU - Zmeskal, Johannes

PY - 2020/7/27

Y1 - 2020/7/27

N2 - 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.

AB - 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=85089419627&partnerID=8YFLogxK

U2 - 10.1063/5.0008808

DO - 10.1063/5.0008808

M3 - Conference contribution

AN - SCOPUS:85089419627

T3 - AIP Conference Proceedings

BT - Proceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon

A2 - Meyer, Curtis

A2 - Schumacher, Reinhard A.

PB - American Institute of Physics Inc.

T2 - 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019

Y2 - 2 June 2019 through 7 June 2019

ER -