Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session E05: Minisymposium: Baryon-Baryon Interactions Involving Strangeness I
7:00 PM–9:15 PM,
Wednesday, November 29, 2023
Hilton Waikoloa Village
Room: Queens 4
Chair: Satoshi Nakamura
Abstract: E05.00003 : High resolution spectroscopy of Ξ hypernuclei (J-PARC E70)*
7:45 PM–8:00 PM
Presenter:
Takeshi K Harada
(Kyoto Univ, JAEA)
Authors:
Takeshi K Harada
(Kyoto Univ, JAEA)
Kengo Ebata
(Kyoto Univ, JAEA)
Manami Fujita
(JAEA)
Toshiyuki Gogami
(Kyoto Univ)
Shuhei H Hayakawa
(Tohoku Univ)
Yudai Ichikawa
(JAEA)
Kento Kamada
(Tohoku Univ)
Takumi Kobori
(Tokyo Tech)
Koji Miwa
(Tohoku Univ)
Tomofumi Nagae
(Kyoto Univ)
Fumiya Oura
(Tohoku Univ)
Kazuma Ohashi
(Tohoku Univ)
Shuji Takahashi
(Kyoto Univ)
Toshiyuki Takahashi
(KEK)
Mifuyu Ukai
(KEK, Tohoku Univ)
Takeshi O Yamamoto
(JAEA)
Daigo Watanabe
(Tohoku Univ)
Collaboration:
J-PARC E70 Collaboration
We are going to perform a high-resolution spectroscopy of 12ΞBe hypernuclei by a missing-mass method via the 12C(K−, K+) reaction (J-PARC E70). The experiment will be carried out at the J-PARC K1.8 beamline, which provides a high-intensity K− beam, with a newly constructed high-resolution magnetic spectrometer S-2S. An active fiber target (AFT) will be used as an experimental target. The expected statistics and missing-mass resolutions are about 100 counts and 2 MeV/c2(FWHM), respectively, which enable us to investigate the structure of Ξ hypernuclei with a higher signal sensitivity than previous experiments.
In June 2023, the first commissioning run of J-PARC E70 was carried out, and a part of calibration data for S-2S and AFT were successfully taken.
In this talk, we will report the analysis results of the first commissioning run and the prospects of the J-PARC E70.
*JSPS KAKENHI Grant Numbers, 23000003, 16H02186, 18H05403, 23H00114, 20J20381
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