Observation of a broad $p$-wave resonant state in $^{9}$He

arXiv (Cornell University) 2026 Preprint Open access

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Authors: Y. L. Sun, A. Corsi, Y. Kubota, Gilles Authelet, H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J. -M. Gheller
+54 more J. Gibelin, A. Giganon, Alain Gillibert, S. Giraud, K. Hasegawa, T. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa, M. Kobayashi, N. Kobayashi, T. Kobayashi, Y. Kondo, ZEREN KORKULU, Shupei Koyama, V. Lapoux, Y. Maeda, F. M. Marques, T. Miyazaki, T. Motobayashi, T. Nakamura, N. Nakatsuka, Y. Nishio, A. Obertelli, A. Ohkura, Nigel Andrew Orr, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Paschalis, Emanuel C. Pollacco, S. Reichert, J. -Y. Rousse, A. T. Saito, S. Sakaguchi, M. Sako, C. Santamaria, M. Sasano, H. Sato, M. Shikata, Y. Shimizu, Y. Shindo, L. Stuhl, T. Sumikama, M. Tabata, Y. Togano, J. Tsubota, Z. H. Yang, J. Yasuda, K. Yoneda, J. Zenihiro, Tomohiro Uesaka
DOI: 10.48550/arxiv.2602.07810
Cited by: 0

Abstract

We report on the two-body invariant-mass spectroscopy of $^{9}$He, populated via the 1$p$1$n$ knockout reaction from the two-neutron halo nucleus $^{11}$Li at $\sim$250 MeV/nucleon. A broad $p$-wave resonant state of $^{9}$He was observed at 1.28(1) MeV with a width of 0.82(4) MeV.

Fields of Study & Subjects

Nuclear physics research studies Astronomical and nuclear sciences Quantum Chromodynamics and Particle Interactions

Publication details

Journal / source
arXiv (Cornell University)
Publication date
8 February 2026
Language
EN
Document type
Preprint