Search for the Weak Decay of a Lightly Bound H0 Dibaryon

A. Alavi-Harati, T. Alexopoulos, M. Arenton, K. Arisaka, S. Averitte, A. R. Barker, L. Bellantoni, A. Bellavance, J. Belz, R. Ben-David, D. R. Bergman, E. Blucher, G. J. Bock, C. Bown, S. Bright, E. Cheu, S. Childress, R. Coleman, M. D. Corcoran, G. CortiB. Cox, M. B. Crisler, A. R. Erwin, R. Ford, A. Glazov, A. Golossanov, G. Graham, J. Graham, K. Hagan, E. Halkiadakis, K. Hanagaki, S. Hidaka, Y. B. Hsiung, V. Jejer, D. A. Jensen, R. Kessler, H. G E Kobrak, J. LaDue, A. Lath, A. Ledovskoy, P. L. McBride, A. P. McManus, P. Mikelsons, E. Monnier, T. Nakaya, K. S. Nelson, H. Nguyen, V. O'Dell, M. Pang, R. Pordes, V. Prasad, C. Qiao, B. Quinn, E. J. Ramberg, R. E. Ray, A. Roodman, M. Sadamoto, S. Schnetzer, K. Senyo, P. Shanahan, P. S. Shawhan, W. Slater, N. Solomey, S. V. Somalwar, R. L. Stone, I. Suzuki, E. C. Swallow, S. A. Taegar, R. J. Tesarek, G. B. Thomson, P. A. Toale, A. Tripathi, R. Tschirhart, Y. W. Wah, J. Wang, H. B. White, J. Whitmore, B. Winstein, R. Winston, T. Yamanaka, E. D. Zimmerman

    Research output: Contribution to journalArticlepeer-review


    We present results of a search for a new form of hadronic matter, a six-quark, dibaryon state called the H0, a state predicted to exist in several theoretical models. Analyzing data collected by experiment E799-II at Fermilab, we searched for the decay H0 → Λ p π and found no candidate events. We place an upper limit on [B(H0 → Λ p π -)d σH/dΩ]/(dσ ≡/dΩ) and, in the context of published models, exclude the region of lightly bound mass states just below the ΛΛ mass threshold, 2.194 <MH <2.231 GeV/c2, with lifetimes from ∼5 × 10-10 sec to ∼1 × 10-3 sec.
    Original languageEnglish
    Pages (from-to)2593-2597
    Number of pages4
    JournalPhysical Review Letters
    Issue number12
    Publication statusPublished - 20 Mar 2000


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