Experiment AGS-E905

Search for a Sigma hypernuclear bound state in 4He(K-,pi+-) reactions

• SPOKESMAN: Tomofumi Nagae, INS - University of Tokyo, Tanashi, Tokyo 188 Japan.
• Collaborators
  • T. Nagae, T. Miyachi, T. Fukuda, H. Outa, T. Tamagawa, J. Nakano -- Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo 188, Japan.
  • R. S. Hayano, H. Tamura\cite{Tohoku}, Y. Shimizu\cite{Osaka}, K. Kubota -- University of Tokyo, Bunkyo, Tokyo 113, Japan.
  • R.E. Chrien, R. Sutter, A. Rusek --Brookhaven National Laboratory, Upton, New York 11973.
  • R. Sawafta -- North Carolina A\&T State University, Greensboro, North Carolina 27411.
  • W.J. Briscoe -the Department of Physics and Center for Nuclear Studies, The George Washington University, Washington, DC 20052.
  • E.V. Hungerford, A. Empl, University of Houston, Houston, Texas 77204.
  • W. Naing -- Hampton University, Hampton, Virginia 23668.
  • C. Neerman, K. Johnston -- Louisiana Tech, Ruston, Louisiana.
  • M. Planinic -- Zagreb University, PO Box 162 Bijeni{\u c}ka c. 32, HR-10 004 Zagreb, Croatia.
• Parameters:
  1. BEAM: 600 MeV/c K-
  2. REACTIONS: (K-,pi+-)
  3. TARGET: Liquid 4He
  4. BEAM LINE: LESB2
  5. DETECTORS: Moby-Dick spectrometer
  6. TIME REQUESTED: 400 hours
• Proposal
• Objective: Search for a Sigma hypernuclear bound state in 4He(K-,pi+-) reactions and provide a precise measurement of the position and widths of the previously observed structure near threshold, and the global shape of the 4He(k-,pi+-)quasi-free spectrum.