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arXiv · 2610.05984

Threshold resonances in relativistic $^{16}$O and $^{22}$Ne dissociation

Abstract

The nuclear emulsion method is applied to study binary dissociation leading to the formation of $α$-particles from $^{16}$O nuclei at 3.65 GeV per nucleon and $^{22}$Ne nuclei at 3.22 GeV per nucleon. The invariant mass distribution for the $^{16}$O$\to$$^{12}$C(0$^+_1$)+$α$ channel indicates decays of the $^{16}$O(0$^+_6$) excitation, whose probability exceeds the estimate for the $^{12}$C(0$^+_2$)+$α$ channel by a factor of 20. The invariant mass distribution for $^{22}$Ne$\to$$^{18}$O+$α$ exhibits a peak corresponding to $^{22}$Ne excitations around 11.6 MeV.

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D. A. Artemenkov, N. K. Kornegrutsa, V. V. Rusakova, A. A. Zaitsev, P. I. Zarubin. 2026-10-05. Threshold resonances in relativistic $^{16}$O and $^{22}$Ne dissociation. https://arxiv.org/abs/2610.05984

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