%0 Journal Article
%A Trnka, D.
%A Anton, G.
%A Bacelar, J. C. S.
%A Bartholomy, O.
%A Bayadilov, D.
%A Beloglazov, Y. A.
%A Bogendoerfer, R.
%A Castelijns, R.
%A Crede, V.
%A Dutz, H.
%A Ehmanns, A.
%A Elsner, M. P.
%A Ewald, R.
%A Fabry, I.
%A Fuchs, M.
%A Essig, K.
%A Funke, R. J.
%A Gothe, R.
%A Gregor, R.
%A Gridnev, A. B.
%A Gutz, E.
%A Hoeffgen, S.
%A Hoffmeister, P.
%A Horn, I.
%A Hoessl, J.
%A Jaegle, I.
%A Junkersfeld, J.
%A Kalinowsky, H.
%A Klein, F.
%A Klein, F.
%A Klempt, E.
%A Konrad, M.
%A Kopf, B.
%A Kotulla, M.
%A Krusche, B.
%A Langheinrich, J.
%A Loehner, H.
%A Lopatin, I. V.
%A Lotz, J.
%A Lugert, S.
%A Menze, D.
%A Messchendorp, J. G.
%A Mertens, T.
%A Metag, V.
%A Morales, C.
%A Nanova, M.
%A Novotny, R.
%A Ostrick, M.
%A Pant, L. M.
%A van Pee, H.
%A Pfeiffer, M.
%A Roy, A.
%A Radkov, J. O.
%A Schadmand, S.
%A Schmidt, Ch.
%A Schmieden, H.
%A Schoch, B.
%A Shende, S.
%A Suft, G.
%A Sumachev, V. V.
%A Szczepanek, T.
%A Suele, A.
%A Thoma, U.
%A Varma, R.
%A Walther, D.
%A Weinheimer, Ch.
%A Wendel, Ch.
%T Observation of In-Medium Modifications of the Omega Meson
%J Physical review letters
%V 94
%@ 0031-9007
%C College Park, Md.
%I APS
%M PreJuSER-50042
%P 192303
%D 2005
%Z Record converted from VDB: 12.11.2012
%X The photoproduction of omega mesons on nuclei has been investigated using the Crystal Barrel/TAPS experiment at the ELSA tagged photon facility in Bonn. The aim is to study possible in-medium modifications of the omega meson via the reaction gamma+A ->omega+X ->pi(0)gamma+X-'. Results obtained for Nb are compared to a reference measurement on a LH2 target. While for recoiling, long-lived mesons (pi(0), eta, and eta(')), which decay outside of the nucleus, a difference in the line shape for the two data samples is not observed, we find a significant enhancement towards lower masses for omega mesons produced on the Nb target. For momenta less than 500 MeV/c an in-medium omega meson mass of M-medium=[722(-4)(+4)(stat)(-5)(+35)(syst)] MeV/c(2) has been deduced at an estimated average nuclear density of 0.6 rho(0).
%K photon nucleus: inclusive reaction (INSPIRE)
%K deuteron (INSPIRE)
%K niobium (INSPIRE)
%K omega(783): photoproduction (INSPIRE)
%K omega(783): radiative decay (INSPIRE)
%K mass spectrum: (pi0 photon) (INSPIRE)
%K omega(783): mass (INSPIRE)
%K omega(783): momentum (INSPIRE)
%K nuclear matter: density (INSPIRE)
%K experimental results (INSPIRE)
%K Bonn ELSA Stor (INSPIRE)
%K photon nucleus --> omega(783) anything (INSPIRE)
%K omega(783) --> pi0 photon (INSPIRE)
%K 0.64-2.53 GeV (INSPIRE)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000229277000013
%R 10.1103/PhysRevLett.94.192303
%U https://juser.fz-juelich.de/record/50042