A search for narrow states produced in the reaction r−p→n+g’s at 13 GeV/c∗

I-H. Chiang,R. A. Johnson, B. Kwan,T. F. Kycia,K. K. Li,L. S. Littenberg, A. Wijangco, L. A. Garren,J. J. Thaler, C. E. Hogan, K. T. McDonald, A. J. S. Smith

AIP Conference Proceedings（1981）

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摘要

Using a double arm lead‐glass lead‐scintillator calorimeter system we have searched for narrow states, such as the hc, produced in the exclusive reactions r−p→ggn, r−p→r0gn, and r−p→r0r0n at 13 GeV/c. We find a 90% c.l. upper limit s ⋅ BR<260 pb for gg states with masses from 2.6 to 3.1 GeV/c2. Corresponding limits on narrow r0g and r0r0 states are also given.

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关键词

elementary particles,mass spectra,monte carlo method,cross section

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