Experimental study of the γp→ηp reaction with the crystal ball detector at the mainz microtron (mami-c) / E. F. Mcnicoll [et al.]

Уровень набора: Physical Review C - Nuclear Physics = 1970-Альтернативный автор-лицо: Mcnicoll, E. F.;Annand, J. R. M.;Codling, J. R. M.;Codling, R. F. B.;Downie, E. J.;Hamilton, D.;Kellie, J. D.;Livingston, K.;Macgregor, I. J. D.;Mcgeorge, J. C.;Mckinnon, B.;Robinson, J.;Rosner, G.;Prakhov, S.;Brudvik, J.;Nefkens, B. M. K.;Starostin, A.;Suarez, A.;Suarez, I. M.;Strakovsky, I. I.;Arndt, R. A.;Briscoe, W. J.;Demissie, B. T.;Freehart, B.;Heid, E.;Marinides, Z.;Oussena, B.;Paris, M. W.;Workman, R. L.;Aguar-Bartolomé, B.;Akasoy, l. K.;Arends, H. J.;Jahn, O.;Martinez, M.;Ostrick, M.;Otte, P. B.;Schumann, S.;Thomas, A.;Iator, I.;Unverzagt, M.;Azimov, Y. I.;Bekrenev, V. S.;Koulbardis, A. A.;Kruglov, S. P.;Bantawa, K.;Manley, D. M.;Beck, R.;Nikolaev, A.;Berghäuser, H.;Drexler, P.;Kotulla, M.;Metag, V.;Novotny, R.;Thiel, M.;Braghieri, A.;Mshkarenkov, A.;Pedroni, P.;Rostomyan, T.;Branford, D.;Glazier, D. I.;Jude, T. C.;Sikora, M. H.;Watts, M. H.;Watts, D. P.;Cherepnya, S.;Cherepnya, S.;Fil'kov, l. V.;Kashevarov, V. L.;Fiks (Fix), A. I., mathematician, Professor of Tomsk Polytechnic University, doctor of physico-mathematical Sciences, 1968-, Alexander Ivanovich;Hornidge, D.;Middleton, D.;Jaegle, I.;Keshelashvili, I.;Krusche, B.;Maghrbi, Y.;Pheron, F.;Werthmüller, D.;Zehr, F.;Kondratiev, R.;Lisin, V.;Polonski, A.;Korolija, M.;Mekterovic, D.;Micanovic, S.;Supek, I.;Zamboni, I.;Sober, D. I.Язык: английский.Страна: .Резюме или реферат: The γp→ηp reaction has been measured with the Crystal Ball and TAPS multiphoton spectrometers in the energy range from the production threshold of 707 MeV to 1.4 GeV (1.49⩽W⩽1.87 GeV). Bremsstrahlung photons produced by the 1.5-GeV electron beam of the Mainz Microtron MAMI-C and momentum analyzed by the Glasgow tagging spectrometer were used for the η-meson production. Our accumulation of 3.8×106 γp→ηp→3π0p→6γp events allows a detailed study of the reaction dynamics. The γp→ηp differential cross sections were determined for 120 energy bins and the full range of the production angles. Our data show a dip nearW=1680 MeV in the total cross section caused by a substantial dip in η production at forward angles. The data are compared to predictions of previous SAID and MAID partial-wave analyses and to the latest SAID and MAID fits that included our data..Тематика: труды учёных ТПУ | электронный ресурс | результаты эксперимента | экспериментальные исследования Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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The γp→ηp reaction has been measured with the Crystal Ball and TAPS multiphoton spectrometers in the energy range from the production threshold of 707 MeV to 1.4 GeV (1.49⩽W⩽1.87 GeV). Bremsstrahlung photons produced by the 1.5-GeV electron beam of the Mainz Microtron MAMI-C and momentum analyzed by the Glasgow tagging spectrometer were used for the η-meson production. Our accumulation of 3.8×106 γp→ηp→3π0p→6γp events allows a detailed study of the reaction dynamics. The γp→ηp differential cross sections were determined for 120 energy bins and the full range of the production angles. Our data show a dip nearW=1680 MeV in the total cross section caused by a substantial dip in η production at forward angles. The data are compared to predictions of previous SAID and MAID partial-wave analyses and to the latest SAID and MAID fits that included our data.

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