De-excitation gamma-rays from the s-hole state in 15N associated with proton decay in 16O

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dc.creatorKobayashi, K.
dc.creatorAkimune, H.
dc.creatorEjiri, H.
dc.creatorFujimura, H.
dc.creatorFujiwara, M.
dc.creatorHara, K.
dc.creatorHara, K. Y.
dc.creatorIshikawa, T.
dc.creatorItoh, M.
dc.creatorItow, Y.
dc.creatorKawabata, T.
dc.creatorNakamura, M.
dc.creatorSakaguchi, H.
dc.creatorSakemi, Y.
dc.creatorShiozawa, M.
dc.creatorTakeda, H.
dc.creatorTotsuka, Y.
dc.creatorToyokawa, H.
dc.creatorUchida, M.
dc.creatorYamada, T.
dc.creatorYasuda, Y.
dc.creatorYoshida, H. P.
dc.creatorYosoi, M.
dc.creatorZegers, R. G. T.
dc.date2006-04-10
dc.date.accessioned2026-07-07T07:11:26Z
dc.date.available2026-07-07T07:11:26Z
dc.descriptionWe have measured de-excitation gamma-rays from the s-hole state in 15N produced via the 16O(p,2p)15N reaction in relation to the study of the nucleon decay and the neutrino neutral-current interaction in water Cherenkov detectors. In the excitation-energy region of the s-hole state between 16 MeV and 40 MeV in 15N, the branching ratio of emitting gamma-rays with the energies at more-than-6 MeV are found to be 15.6+-1.3+0.6-1.0%. Taking into account the spectroscopic factor of the s-hole state, the total emission probability is found to be 3.1%. This is about 1/10 compared with the emission probability of the 6.32 MeV gamma-ray from the 3/2- p-hole state in 15N. Moreover, we searched for a 15.1 MeV gamma-ray from the 12C 1+ state which may be populated after the particle-decay of the s-hole state in 15N. Such a high energy gamma-ray from the hole state would provide a new method to search for mode-independent nucleon decay even if the emission probability is small. No significant signal is found within a statistical uncertainty.
dc.identifierhttps://arxiv.org/abs/nucl-ex/0604006
dc.identifierhttp://arxiv.org/abs/nucl-ex/0604006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/111756
dc.subjectNuclear Experiment
dc.titleDe-excitation gamma-rays from the s-hole state in 15N associated with proton decay in 16O
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