Photoproduction of the ω meson on the proton near threshold

I. I. Strakovsky, S. Prakhov, Ya I. Azimov, P. Aguar-Bartolomé, J. R.M. Annand, H. J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, W. J. Briscoe, J. Brudvik, S. Cherepnya, R. F.B. Codling, C. Collicott, S. Costanza, B. T. Demissie, E. J. Downie, P. DrexlerL. V. Fil'Kov, D. I. Glazier, R. Gregor, D. J. Hamilton, E. Heid, D. Hornidge, I. Jaegle, O. Jahn, T. C. Jude, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J.D. Macgregor, Y. Maghrbi, D. M. Manley, Z. Marinides, J. C. McGeorge, E. F. McNicoll, D. Mekterovic, V. Metag, D. G. Middleton, A. Mushkarenkov, B. M.K. Nefkens, A. Nikolaev, R. Novotny, H. Ortega, M. Ostrick, P. B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, A. Starostin, I. Supek, M. F. Taragin, C. M. Tarbert, M. Thiel, M. Unverzagt, D. Werthmüller, F. Zehr, Daniel Peter Watts

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Abstract

An experimental study of ω photoproduction on the proton was conducted by using the Crystal Ball and TAPS multiphoton spectrometers together with the photon tagging facility at the Mainz Microtron MAMI. The γp→ωp differential cross sections are measured from threshold to the incident-photon energy Eγ=1.40 GeV (W=1.87 GeV for the center-of-mass energy) with 15-MeV binning in Eγ and full production-angle coverage. The quality of the present data near threshold gives access to a variety of interesting physics aspects. As an example, an estimation of the ωN scattering length αωp is provided.

Original languageEnglish
Article number045207
JournalPhysical Review C - Nuclear Physics
Volume91
Issue number4
DOIs
Publication statusPublished - 30 Apr 2015

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