Modification of the omega-meson lifetime in nuclear matter
- Kotulla, M.
- Trnka, D.
- Muehlich, P.
- Anton, G.
- Bacelar, J. C. S.
- Bartholomy, O.
- Bayadilov, D.
- Beloglazov, Y. A.
- Bogendoerfer, R.
- Castelijns, R.
- Crede, V.
- Dutz, H.
- Ehmanns, A.
- Elsner, D.
- Ewald, R.
- Fabry, I.
- Fuchs, M.
- Essig, K.
- Funke, Ch.
- Gothe, R.
- Gregor, R.
- Gridnev, A. B.
- Gutz, E.
- Hoeffgen, S.
- Hoffmeister, P.
- Horn, I.
- Hoessl, J.
- Jaegle, I.
- Junkersfeld, J.
- Kalinowsky, H.
- Klein, Frank
- Klein, Fritz
- Klempt, E.
- Konrad, M.
- Kopf, B.
- Krusche, B.
- Langheinrich, J.
- Loehner, H.
- Lopatin, I. V.
- Lotz, J.
- Lugert, S.
- Menze, D.
- Messchendorp, J. G.
- Mertens, T.
- Metag, V.
- Mosel, U.
- Nanova, M.
- Novotny, R.
- Ostrick, M.
- Pant, L. M.
- van Pee, H.
- Pfeiffer, M.
- Roy, A.
- Radkov, A.
- Schadmand, S.
- Schmidt, Ch.
- Schmieden, H.
- Schoch, B.
- Shende, S.
- Suft, G.
- Sumachev, V. V.
- Szczepanek, T.
- Suele, A.
- Thoma, U.
- Varma, R.
- Walther, D.
- Weinheimer, Ch.
- Wendel, Ch.
DOIAbstract
Information on hadron properties in the nuclear medium has been derived from the photoproduction of omega mesons on the nuclei C, Ca, Nb, and Pb using the Crystal Barrel/TAPS detector at the ELSA tagged photon facility in Bonn. The dependence of the omega-meson cross section on the nuclear mass number has been compared with three different types of models: a Glauber analysis, a Boltzmann-Uehling-Uhlenbeck analysis of the Giessen theory group, and a calculation by the Valencia theory group. In all three cases, the inelastic omega width is found to be 130-150 MeV/c(2) at normal nuclear matter density for an average 3-momentum of 1.1 GeV/c. In the rest frame of the omega meson, this inelastic omega width corresponds to a reduction of the omega...
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