Journal article

Publication year: 1998

Pages: 249-257

Journal: The European Physical Journal C

Volume number: 4

Issue number: 2

ISSN: 1434-6044

DOI Link: https://doi.org/10.1007/s100529800804

Publisher: SpringerOpen

Abstract: 
In a joint experiment the TAPS and CERES collaborations have studied the production of the neutral mesons pi degrees; eta and omega in 450 GeV p-Be and p-Au collisions at the CERN SPS. The mesons were identified by their pi degrees --> gamma gamma, eta --> gamma gamma, and omega --> pi degrees gamma decay modes. The cross sections were measured down to very low p(T) (greater than or equal to 20 MeV/c) near mid-rapidity (3.0 <: y < 4.0). The eta and omega, cross sections are smaller than expected from extrapolations of earlier. data to low p(T). Integrated over all p(T), the ratios eta/pi degrees and omega/pi degrees are lower by about 25% compared to previously published values. The reduction may be attributed to the large number of low pr pions from decays of heavier mesons. In addition, we have studied the dependence of neutral meson production on the mass of the nuclear target and find it in good agreement with previous measurements of charged mesons.

Harvard Citation style: Agakichiev, G., Appenheimer, M., Averbeck, R., Ballester, F., Baur, R., Brenschede, A., et al. (1998) Neutral meson production in p-Be and p-Au collisions at 450 GeV beam energy, The European Physical Journal C, 4(2), pp. 249-257. https://doi.org/10.1007/s100529800804

APA Citation style: Agakichiev, G., Appenheimer, M., Averbeck, R., Ballester, F., Baur, R., Brenschede, A., Diaz, J., Drees, A., Faschingbauer, U., Ferrero, J., Fischer, P., Fraenkel, Z., Franke, M., Fuchs, C., Gatti, E., Glassel, P., Gunzel, T., de los Hero, C., Hess, F., ...Yurevich, V. (1998). Neutral meson production in p-Be and p-Au collisions at 450 GeV beam energy. The European Physical Journal C. 4(2), 249-257. https://doi.org/10.1007/s100529800804