FIZIKA B 8 (1999) 1, 85-90

SEARCH FOR h-MESIC NUCLEI IN PHOTOPRODUCTION PROCESSES AT LPI

G. A. SOKOL, T. A. AIBERGENOV, A. V. KRAVTSOV, A. I. L'VOV, L. N. PAVLYUCHENKO

P. N. Lebedev Physical Institute of RAS, Leninsky Prospect 53, Moscow 117924, Russia

Received 10 February 1999; Accepted 19 July 1999

Presented are preliminary results of an experiment performed at the 1-GeV electron synchrotron of Lebedev Physical Institute giving bremsstrahlung photon beams of the end-point energies of 650 and 850 MeV. Correlated p⁺n pairs with the opening angle áq_pNń=180^° and with the energies áE_p⁺ń=300 MeV and áE_nń=100 MeV arising from the process g+¹²C®N+_h(A-1)®N+p⁺n+(A-2) have been observed. They provide an evidence for the existence of the ¹¹_hB and ¹¹_hC h-mesic nuclei.

PACS numbers: 25.20.Lj, 24.30.Gd, 21.30.Fe
UDC 539.126

Keywords: h-meson, h-mesic nuclei, S₁₁ resonance, correlated pN-pairs

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