Thiel, M. et al. (2013) In-medium modifications of the ω meson near the production threshold. European Physical Journal A, 49(132), (doi: 10.1140/epja/i2013-13132-6)
Full text not currently available from Enlighten.
Abstract
The in-medium properties of the omega meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify omega mesons through their omega -> pi(0)gamma decay channel. Two solid targets (C, Nb) and a LH2 target as a reference have been used. In the energy range 900 to 1300 MeV the omega lineshapes for the different nuclei are compared and a broadening of the omega signal for the niobium target is observed in comparison to the liquid-hydrogen target. In a second analysis the omega momentum distributions for the solid targets are determined for 50 MeV/c wide bins. For both analyses a comparison to transport calculations shows that the data are consistent with an in-medium modification by collisional broadening, as observed by transparency ratio measurements.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Middleton, Dr Duncan and Glazier, Dr Derek and McGeorge, Dr John and Robinson, Mr Jamie and Downie, Dr Evangeline and MacGregor, Professor Douglas and Livingston, Dr Kenneth and McNicoll, Miss Eilidh and Mancell, Mr Joe and Annand, Dr John and Rosner, Professor Guenther |
| Authors: | Thiel, M., Metag, V., Bartolome, P. A., Akasoy, L. K., Annand, J.R.M., Arends, H. J., Bantawa, K., Beck, R., Bekrenev, V., Berghaeuser, H., Braghieri, A., Briscoe, W. J., Brudvik, J., Cherepnya, S., Dieterle, M., Downie, E.J., Drexler, P., Fil'kov, L. V., Friedrich, S., Glazier, D.I., Gregor, R., Heid, E., Hornidge, D., Jahn, O., Jude, T. C., Kashevarov, V. L., Keshelashvili, I., Kondratiev, R., Korolija, M., Kotulla, M., Krusche, B., Kulbardis, A., Lemmer, B., Lisin, V., Livingston, K., Lugert, S., MacGregor, I.J.D., Maghrbi, Y., Mancell, J., Manley, D. M., Martinez, M., McGeorge, J.C., McNicoll, E.F., Middleton, D.G., Mushkarenkov, A., Nanova, M., Nefkens, B. M. K., Nikolaev, A., Novotny, R. W., Ostrick, M., Pedroni, P., Pheron, F., Polonski, A., Prakhov, S. N., Robinson, J., Rosner, G., Rostomyan, T., Schumann, S., Sikora, M. H., Starostin, A., Supek, I., Thomas, A., Unverzagt, M., Watts, D. P., Weil, J., Werthmueller, D., and Zamboni, I. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Research Group: | Nuclear Physics |
| Journal Name: | European Physical Journal A |
| Publisher: | Springer |
| ISSN: | 1434-6001 |
| ISSN (Online): | 1434-601X |
| Copyright Holders: | Societ`a Italiana di Fisica / Springer-Verlag |
University Staff: Request a correction | Enlighten Editors: Update this record
Funder and Project Information
Funder and Project Information