Elementary Particles and Fields Experiment

Physics of Atomic Nuclei

, Volume 73, Issue 10, pp 1707-1712

First online:

Kaon, pion, and proton associated photofission of Bi nuclei

  • Y. SongAffiliated withCollege of Nuclear Science and Techology, Harbin Engineering University
  • , A. MargaryanAffiliated withYerevan Physics Institute Email author 
  • , A. AchaAffiliated withDepartment of Physics, Florida International University
  • , A. AhmidouchAffiliated withDepartment of Physics, North Carolina A&T State University
  • , D. AndroicAffiliated withDepartment of Physics & Department of Applied Physics, University of Zagreb
  • , A. AsaturyanAffiliated withYerevan Physics Institute
  • , R. AsaturyanAffiliated withYerevan Physics Institute
  • , O. K. BakerAffiliated withDepartment of Physics, Hampton University
  • , P. BaturinAffiliated withDepartment of Physics, Florida International University
    • , F. BenmokhtarAffiliated withDepartment of Physics, University of Maryland
    • , R. CarliniAffiliated withThomas Jefferson National Accelerator Facility
    • , X. ChenAffiliated withNuclear Physics Institute, Lanzhou University
    • , M. ChristyAffiliated withDepartment of Physics, Hampton University
    • , L. ColeAffiliated withDepartment of Physics, Hampton University
    • , S. DanagoulianAffiliated withDepartment of Physics, North Carolina A&T State University
    • , A. DanielAffiliated withDepartment of Physics, University of Houston
    • , V. DharmawardaneAffiliated withThomas Jefferson National Accelerator Facility
    • , K. EgiyanAffiliated withYerevan Physics Institute
    • , M. ElaasarAffiliated withDepartment of Physics, Southern University at New Orleans
    • , R. EntAffiliated withThomas Jefferson National Accelerator Facility
    • , H. FenkerAffiliated withThomas Jefferson National Accelerator Facility
    • , Y. FujiiAffiliated withDepartment of Physics, Tohoku University
    • , M. FuricAffiliated withDepartment of Physics & Department of Applied Physics, University of Zagreb
    • , L. GanAffiliated withDepartment of Physics, University of North Carolina at Wilmington
    • , D. GaskellAffiliated withThomas Jefferson National Accelerator Facility
    • , A. GasparianAffiliated withDepartment of Physics, North Carolina A&T State University
    • , E. F. GibsonAffiliated withCalifornia State University
    • , N. GrigoryanAffiliated withYerevan Physics Institute
    • , P. GueyeAffiliated withDepartment of Physics, Hampton University
    • , R. HalkyardAffiliated withDepartment of Physics, Louisiana Tech. University
    • , O. HashimotoAffiliated withDepartment of Physics, Tohoku University
    • , D. HondaAffiliated withDepartment of Physics, Tohoku University
    • , T. HornAffiliated withDepartment of Physics, University of Maryland
    • , B. HuAffiliated withNuclear Physics Institute, Lanzhou University
    • , S. HuAffiliated withNuclear Physics Institute, Lanzhou University
    • , Ed. V. HungerfordAffiliated withDepartment of Physics, University of Houston
    • , M. IspiryanAffiliated withDepartment of Physics, University of Houston
    • , K. JohnstonAffiliated withDepartment of Physics, Louisiana Tech. University
    • , M. JonesAffiliated withThomas Jefferson National Accelerator Facility
    • , N. KalantariansAffiliated withDepartment of Physics, University of Houston
    • , M. KanetaAffiliated withDepartment of Physics, Tohoku University
    • , F. KatoAffiliated withDepartment of Physics, Tohoku University
    • , S. KatoAffiliated withDepartment of Physics, Yamagata University
    • , D. KawamaAffiliated withDepartment of Physics, Tohoku University
    • , C. KeppelAffiliated withDepartment of Physics, Hampton University
    • , S. KnyazyanAffiliated withYerevan Physics Institute
    • , Y. LiAffiliated withDepartment of Physics, University of Houston
    • , W. LuoAffiliated withNuclear Physics Institute, Lanzhou University
    • , D. MackAffiliated withThomas Jefferson National Accelerator Facility
    • , G. MarikyanAffiliated withYerevan Physics Institute
    • , N. MaruyamaAffiliated withDepartment of Physics, Tohoku University
    • , A. MatsumuraAffiliated withDepartment of Physics, Tohoku University
    • , T. MiyoshiAffiliated withDepartment of Physics, Tohoku University
    • , A. MkrtchyanAffiliated withYerevan Physics Institute
    • , H. MkrtchyanAffiliated withYerevan Physics Institute
    • , S. N. NakamuraAffiliated withDepartment of Physics, Tohoku University
    • , T. NavasardyanAffiliated withYerevan Physics Institute
    • , G. NiculescuAffiliated withDepartment of Physics, James Madison University
    • , M. -I. NiculescuAffiliated withDepartment of Physics, James Madison University
    • , H. NomuraAffiliated withDepartment of Physics, Tohoku University
    • , K. NonakaAffiliated withDepartment of Physics, Tohoku University
    • , A. OhtaniAffiliated withDepartment of Physics, Tohoku University
    • , Y. OkayasuAffiliated withDepartment of Physics, Tohoku University
    • , P. PamelaAffiliated withDepartment of Physics, Florida International University
    • , L. ParlakyanAffiliated withYerevan Physics Institute
    • , N. PerezAffiliated withDepartment of Physics, Florida International University
    • , T. PetkovicAffiliated withDepartment of Physics & Department of Applied Physics, University of Zagreb
    • , S. RandeniyaAffiliated withDepartment of Physics, University of Houston
    • , J. ReinholdAffiliated withDepartment of Physics, Florida International University
    • , R. RiveraAffiliated withDepartment of Physics, Florida International University
    • , J. RocheAffiliated withThomas Jefferson National Accelerator Facility
    • , V. M. RodriguezAffiliated withDepartment of Physics, University of Houston
    • , Y. SatoAffiliated withDepartment of Physics, Tohoku University
    • , T. SevaAffiliated withDepartment of Physics & Department of Applied Physics, University of Zagreb
    • , N. SimicevicAffiliated withDepartment of Physics, Louisiana Tech. University
    • , G. SmithAffiliated withThomas Jefferson National Accelerator Facility
    • , M. SumihamaAffiliated withDepartment of Physics, Tohoku University
    • , V. TadevosyanAffiliated withYerevan Physics Institute
    • , T. TakahashiAffiliated withDepartment of Physics, Tohoku University
    • , H. TamuraAffiliated withDepartment of Physics, Tohoku University
    • , L. TangAffiliated withDepartment of Physics, Hampton University
    • , V. TvaskisAffiliated withThomas Jefferson National Accelerator Facility
    • , H. VardanyanAffiliated withYerevan Physics Institute
    • , W. VulcanAffiliated withThomas Jefferson National Accelerator Facility
    • , B. WangAffiliated withNuclear Physics Institute, Lanzhou University
    • , S. WellsAffiliated withDepartment of Physics, Louisiana Tech. University
    • , S. WoodAffiliated withThomas Jefferson National Accelerator Facility
    • , C. YanAffiliated withThomas Jefferson National Accelerator Facility
    • , L. YuanAffiliated withDepartment of Physics, Hampton University

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Abstract

The first measurement of proton, pion, and kaon associated fission of Bi nuclei has been performed in a photon energy range 1. 45 < E γ < 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.