Journalartikel

Jahr der Veröffentlichung: 1995

Seiten: 237-240

Zeitschrift: Zeitschrift für Physik A, Hadrons and Nuclei

Bandnummer: 351

Heftnummer: 3

ISSN: 0939-7922

DOI Link: https://doi.org/10.1007/BF01290901

Verlag: Springer

Abstract: 
Neat threshold photoproduction of eta-mesons from the proton has been measured at, the MAMI accelerator with the TAPS spectrometer. The mass of the eta-meson was deduced from the threshold energy for eta-photoproduction. The result of m(eta)=(547.12 +/- 0.06 +/- 0.25) MeV supports the low value of the eta-mass reported from a dp --> He-3(eta) measurement at SATURNE in 1992. The eta-decay branching ratio Gamma(3 pi degrees)/Gamma(gamma gamma) was measured to be (0.832 +/-0.005 +/-0.012).

Harvard-Zitierstil: KRUSCHE, B., AHRENS, J., ANTHONY, I., ANTON, G., BECK, R., FUCHS, M., et al. (1995) MASS AND GAMMA(3-PI-0)/GAMMA(GAMMA-GAMMA) DECAY BRANCHING RATIO OF THE ETA-MESON FROM THE P(GAMMA, ETA)P REACTION, Zeitschrift für Physik A Hadrons and Nuclei, 351(3), pp. 237-240. https://doi.org/10.1007/BF01290901

APA-Zitierstil: KRUSCHE, B., AHRENS, J., ANTHONY, I., ANTON, G., BECK, R., FUCHS, M., GABLER, A., HARTER, F., HALL, S., HLAVAC, S., KAISER, K., KELLIE, J., METAG, V., MILLER, G., OWENS, R., PEISE, J., ROBIGLANDAU, M., SCHUBERT, A., SIMON, R., ...TRIES, V. (1995). MASS AND GAMMA(3-PI-0)/GAMMA(GAMMA-GAMMA) DECAY BRANCHING RATIO OF THE ETA-MESON FROM THE P(GAMMA, ETA)P REACTION. Zeitschrift für Physik A Hadrons and Nuclei. 351(3), 237-240. https://doi.org/10.1007/BF01290901