Comparison of 3 Λ H/ 4 Λ H production cross-section via ( K − , π 0 ) reaction at J-PARC

• Published in: EPJ Web of conferences Vol. 271; p. 1003
• Main Authors: Akaishi, Takaya, Asano, Hidemitsu, Chen, Xurong, Clozza, Alberto, Curceanu, Catalina, Del Grande, Raffaele, Guaraldo, Carlo, Han, Chengdong, Hashimoto, Tadashi, Iliescu, Mihai, Inoue, Kentaro, Ishimoto, Shigeru, Itahashi, Kenta, Iwasaki, Masahiko, Ma, Yue, Murayama, Rie, Miliucci, Marco, Noumi, Hiroyuki, Ohnishi, Hiroyuki, Okada, Shinji, Outa, Haruhiko, Piscicchia, Kristian, Sada, Yuta, Sakaguchi, Atsushi, Sakuma, Fuminori, Sato, Masaharu, Scordo, Alessandro, Sirghi, Diana, Sirghi, Florin, Shirotori, Kotaro, Suzuki, Shoji, Tanida, Kiyoshi, Toda, Taiga, Tokuda, Megumu, Tsuruta, Masato, Yamaga, Takumi, Yuan, Xiaohua, Zhang, Hongqiang, Zhang, Pengming, Zhang, Yapeng
• Format: Journal Article
• Language: English
• Published: EDP Sciences 2022
• ISSN: 2100-014X; 2100-014X
• DOI: 10.1051/epjconf/202227101003

Recent heavy-ion collision experiments reported a surprisingly short lifetime for the hypertriton, which has been recognized as the hypertriton lifetime puzzle. Our J-PARC E73 experiment contributes to solve this puzzle with an independent experimental method by employing
3
He(
K
−
,
π
0
)
3
Λ
H reaction. In this contribution, we will demonstrate our capability to provide
3
Λ
H binding energy information by deriving the production cross section ratio,
σ
3
Λ
H
/
σ
4
Λ
H
. The production cross section data for
3
Λ
H and
4
Λ
H are already available as the pilot run of E73 experiment and data analysis is in progress.