Abstract
The SRC/BM@N experiment was carried out in the 55th run of the Nuclotron using a liquid hydrogen target and a carbon beam with a kinetic energy of about 3.1 GeV/n. We propose to analyze the experimental data to search for a quasi-bound state of η-meson and nucleons in the reaction 12C+p → η(A-1)+X → π+p+(A-2). To achieve this goal, it is necessary to identify the residual nucleus (A-2) and the proton-pion pair formed from η-nuclei decay.
Highlights
A bound system of strongly interacting particles in a nucleus has provided variable information about some aspects of hadron-nucleon interaction in the nucleon environment
The intensive studies of the η-meson led to the prediction of the existence of a bound state of η-meson in a nucleus
This phenomenon has been termed as η-mesic nucleus [1]
Summary
A bound system of strongly interacting particles in a nucleus has provided variable information about some aspects of hadron-nucleon interaction in the nucleon environment. The intensive studies of the η-meson led to the prediction of the existence of a bound state of η-meson in a nucleus. This phenomenon has been termed as η-mesic nucleus [1]. In the 55th run of the Nuclotron, the "Short Range Correlations" (SRC) group carried out its first research using the extracted 12C beam and the BM@N beam line. They intended to study SRC by means of the proton knockout reaction, p(12C,2p)X, which is performed at large momentum transfer and a center-of-mass scattering angle around 90o [8]. The SRC experiment is aimed at measuring simultaneously the following triple and fourfold coincidence reactions: 12C + p →11 B + pp; C + p →10 B + pp + X;12 C + p →10 Be + pp + X;12 C + p →10 B + pp + n;12 C + p →10 Be + pp + p
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