PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Hadrons in medium - hyperons and mesons in nuclear matter
X-ray spectroscopy experiments on exotic Xi atoms at J-PARC
T.O. Yamamoto*, N. Chiga, H. Ekawa, M. Fujita, T. Gogami, T. Harada, S.H. Hayakawa, K. Hosomi, Y. Ichikawa, Y. Ishikawa, K. Kamada, H. Kanauchi, T. Koike, K. Miwa, T. Nagae, Y. Ogura, F. Oura, T.G. Rogers, T. Takahashi, H. Tamura, K. Tanida, M. Ukai, J. Yoshida  on behalf of the E03/E07 Collaborations
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Pre-published on: March 31, 2022
Published on:
Abstract
X-ray spectroscopy of hadronic atoms is a powerful method
to determine the strong interaction between the hadron and
nuclei. At J-PARC, we have conducted two experiments on
exotic atoms with a doubly strange hyperon, $\Xi^-$, aiming at
the world-first detection of the X rays.
One is performed as a byproduct of J-PARC E07 experiment
(search for double hypernuclei with hybrid emulsion technique)
where $\Xi^-$ is stopped on the emulsion.
The other is a dedicated experiment for the detection of $\Xi^-$ Fe atom X rays (J-PARC E03).
The preliminary result of E07 and the status of the ongoing analysis for E03
are shown in this article.
Future prospects of $\Xi$-atomic X-ray spectroscopy are also discussed.
DOI: https://doi.org/10.22323/1.380.0211
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