Journalartikel

Jahr der Veröffentlichung: 1997

Seiten: R2920-R2923

Zeitschrift: Physical Review C

Bandnummer: 56

Heftnummer: 6

ISSN: 0556-2813

eISSN: 1089-490X

DOI Link: https://doi.org/10.1103/PhysRevC.56.R2920

Verlag: American Physical Society

Abstract: 
The Dalitz-decay contributions of pi(0) and eta mesons to the di-electron invariant-mass spectrum at 1A GeV have been obtained from a systematics of inclusive meson production cross sections measured for the collision systems C-12 + C-nat and Ar-40, Ca-40 + Ca-nat in the bombarding-energy range of 0.8-2.0 A GeV. These results are compared with the recently published di-electron mass spectra of the DLS collaboration. Systematic errors and angular-distribution effects are discussed. We conclude that the low-mass part of the DLS data cannot be explained by the Dalitz decays of light neutral mesons only.

Harvard-Zitierstil: Holzmann, R., Appenheimer, M., Averbeck, R., Charbonnier, Y., Delagrange, H., Diaz, J., et al. (1997) Contribution of π⁰ and η Dalitz decays to the dilepton invariant-mass spectrum in 1A GeV heavy-ion collisions, PHYSICAL REVIEW C, 56(6), pp. R2920-R2923. https://doi.org/10.1103/PhysRevC.56.R2920

APA-Zitierstil: Holzmann, R., Appenheimer, M., Averbeck, R., Charbonnier, Y., Delagrange, H., Diaz, J., Doppenschmidt, A., Hejny, V., Hlavac, S., Kugler, A., Lefevre, F., Lohner, H., Marin, A., Martinez, G., Matulewicz, T., Metag, V., Novotny, R., Ostendorf, R., Pleskac, R., ...Wolf, M. (1997). Contribution of π⁰ and η Dalitz decays to the dilepton invariant-mass spectrum in 1A GeV heavy-ion collisions. PHYSICAL REVIEW C. 56(6), R2920-R2923. https://doi.org/10.1103/PhysRevC.56.R2920