Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2006-07-25
Physics
Nuclear Physics
Nuclear Experiment
10 pages, 10 figures, LaTeX
Scientific paper
A new resonance structure at M = 355 \pm 6 \pm 9 MeV is observed in the invariant mass spectrum of two gamma-quanta produced in the reaction d + C => gamma + gamma + x at momentum 2.75 GeV/c per nucleon. Preliminary estimates of its width and cross section are Gamma = 41 \pm 12 MeV and sigma_{gamma-gamma} = 0.6 mkb. The collected statistics is 2680 \pm 310 events of 1.5 10^6 triggered interactions of a total number 3 10^{12} dC-interactions.
Abraamyan Kh. U.
Sissakian Alexei N.
Sorin Alexander S.
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