Search for double-Λ hypernuclei formation via (Ξ-, 12C)atom12ΛΛB+n

P. Khaustov, D. E. Alburger, P. D. Barnes, B. Bassalleck, A. R. Berdoz, A. Biglan, T. Bürger, D. S. Carman, R. E. Chrien, C. A. Davis, H. Fischer, G. B. Franklin, J. Franz, L. Gan, A. Ichikawa, T. Iijima, K. Imai, Y. Kondo, P. Koran, M. LandryL. Lee, J. Lowe, R. Magahiz, M. May, R. McCrady, C. A. Meyer, F. Merrill, S. A. Page, K. Paschke, P. H. Pile, B. Quinn, W. D. Ramsay, A. Rusek, R. Sawafta, H. Schmitt, R. A. Schumacher, R. W. Stotzer, R. Sutter, F. Takeutchi, W. T.H. Van Oers, K. Yamamoto, M. Yosoi, V. J. Zeps

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Measurement of the energy of neutrons in coincidence with the production of free Ξ- hyperons can be used to determine the masses of 12ΛΛB hypernuclear states and branching ratios of their formation from (Ξ-, 12C)atom12ΛΛB+n. The E885 Collaboration utilized the Alternating Gradient Synchrotron 1.8 GeV/c K- beam incident on a diamond target to accumulate the largest-to-date data sample of (K-,K+) events. A total of about 3 × 105 (K-,K+) events have been collected and analyzed. The neutron spectrum shows no apparent peaks from the neutron-emission channel of double-Λ hypernuclear formation from (Ξ-, 12C)atom decay. The upper limit on the branching ratio of the above process has been set to be at or below 4% in the region of expected neutron energies.

Original languageEnglish
Article number027601
Pages (from-to)276011-276014
Number of pages4
JournalPhysical Review C - Nuclear Physics
Issue number2
Publication statusPublished - 2000 Feb


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