Kaon, pion, and proton associated photofission of Bi nuclei

Y. Song, A. Margaryan, A. Acha, A. Ahmidouch, D. Androic, A. Asaturyan, R. Asaturyan, O. K. Baker, P. Baturin, F. Benmokhtar, R. Carlini, X. Chen, M. Christy, L. Cole, S. Danagoulian, A. Daniel, V. Dharmawardane, K. Egiyan, M. Elaasar, R. EntH. Fenker, Y. Fujii, M. Furic, L. Gan, D. Gaskell, A. Gasparian, E. F. Gibson, N. Grigoryan, P. Gueye, R. Halkyard, O. Hashimoto, D. Honda, T. Horn, B. Hu, S. Hu, Ed V. Hungerford, M. Ispiryan, K. Johnston, M. Jones, N. Kalantarians, M. Kaneta, F. Kato, S. Kato, D. Kawama, C. Keppel, S. Knyazyan, Y. Li, W. Luo, D. Mack, G. Marikyan, N. Maruyama, A. Matsumura, T. Miyoshi, A. Mkrtchyan, H. Mkrtchyan, S. N. Nakamura, T. Navasardyan, G. Niculescu, M. I. Niculescu, H. Nomura, K. Nonaka, A. Ohtani, Y. Okayasu, P. Pamela, L. Parlakyan, N. Perez, T. Petkovic, S. Randeniya, J. Reinhold, R. Rivera, J. Roche, V. M. Rodriguez, Y. Sato, T. Seva, N. Simicevic, G. Smith, M. Sumihama, V. Tadevosyan, T. Takahashi, H. Tamura, L. Tang, V. Tvaskis, H. Vardanyan, W. Vulcan, B. Wang, S. Wells, S. Wood, C. Yan, L. Yuan

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The first measurement of proton, pion, and kaon associated fission of Bi nuclei has been performed in a photon energy range 1.45 < Eγ < 1.55 GeV. The fission probabilities are compared with an inclusive fission probabilities obtained with photons, protons and pions. The fission probability of Bi nuclei in coincidence with kaons is 0.18 ± 0.06 which is ~3 times larger than the proton and pion associated fission probabilities and ~2 times larger than inclusive ones. The kaon associated excess fission events are explained in terms of bound Λ residual states and their weak nonmesonic decays.

Original languageEnglish
Pages (from-to)1707-1712
Number of pages6
JournalPhysics of Atomic Nuclei
Issue number10
Publication statusPublished - 2010 Oct


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