Discovery of eta-mesic nuclei

Discovery of eta-mesic nuclei

First experimental results from a photoreaction which confirm an existence of eta-mesic nuclei are discussed. The experiment was performed at the 1 GeV electron synchrotron of LPI. Two values of the end-point energy of the bremsstrahlung beam were used, 650 and 850 MeV (below and above eta-photoprod...

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Veröffentlicht in:arXiv.org 2001-11
Hauptverfasser: Sokol, G A, Pavlyuchenko, L N
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Sprache:eng
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Bremsstrahlung
Energy measurement
Energy spectra
Nuclei
Photoproduction
Scintillation counters
Spectrometers
Target detection
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description First experimental results from a photoreaction which confirm an existence of eta-mesic nuclei are discussed. The experiment was performed at the 1 GeV electron synchrotron of LPI. Two values of the end-point energy of the bremsstrahlung beam were used, 650 and 850 MeV (below and above eta-photoproduction threshold on the nucleon). Correlated pi+ n pairs flying from the 12C target were detected by two TOF scintillator spectrometers placed in opposite directions and transversely to the gamma beam. Measured energy spectra provide a strong evidence for a creation of eta-mesic nuclei as intermediate states of the reaction studied.
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subjects Bremsstrahlung
Energy measurement
Energy spectra
Nuclei
Photoproduction
Scintillation counters
Spectrometers
Target detection
title Discovery of eta-mesic nuclei
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