Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
E. F. McNicoll, S. Prakhov, I. I. Strakovsky, P. Aguar-Bartolomepmainz, L. K. Akasoy, J. R. M. Annand, H. J. Arends, R. A. Arndt, Ya. I. Azimov, K. Bantawa, R. … 展开作者
E. F. McNicoll, S. Prakhov, I. I. Strakovsky, P. Aguar-Bartolomepmainz, L. K. Akasoy, J. R. M. Annand, H. J. Arends, R. A. Arndt, Ya. I. Azimov, K. Bantawa, R. Beck, V. S. Bekrenev, H. Berghaeuser, A. Braghieri, D. Branford, W. J. Briscoe, J. Brudvik, S. Cherepnya, R. F. B. Codling, B. T. Demissie, E. J. Downie, P. Drexler, L. V. Fil'kov, A. Fix, B. Freehart, D. I. Glazier, R. Gregor, D. Hamilton, E. Heid, D. Hornidge, I. Jaegle, O. Jahn, T. C. Jude, V. L. Kashevarov, J. D. Kellie, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. A. Koulbardis, S. P. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J. D. MacGregor, Y. Maghrbi, D. M. Manley, Z. Marinides, M. Martinez, J. C. McGeorge, B. McKinnon, D. Mekterovic, V. Metag, S. Micanovic, D. Middleton, A. Mushkarenkov, B. M. K. Nefkens, A. Nikolaev, R. Novotny, M. Ostrick, P. B. Otte, B. Oussena, M. W. Paris, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, D. I. Sober, A. Starostin, I. M. Suarez, I. Supek, M. Thiel, A. Thomas, L. Tiator, M. Unverzagt, D. P. Watts, D. Werthmueller, R. L. Workman, I. Zamboni, F. Zehr
The gp-->etap 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 eta-meson production. Our accumulation of 3.8 x 10^6 gp-->etap-->3pi0p-->6gp events allows a detailed study of the reaction dynamics. The gp-->etap differential cross sections were determined for 120 energy bins and the full range of the production angles. Our data show a dip near W = 1680 MeV in the total cross section caused by a substantial dip in eta production at forward angles. The data are compared to predictions of previous SAID and MAID partial-wave analyses and to thelatest SAID and MAID fits that have included our data.
A new determination of the eta transition form factor in the Dalitz decay eta -> e^+ e^- gamma with the Crystal Ball/TAPS detectors at the Mainz Microtron
Precise measurement of the $Λ$-binding energy difference between $^3_Λ$H and $^4_Λ$H via decay-pion spectroscopy at MAMI
RIKEN Nishina Center for Accelerator-Based Science（理化学研究所仁科加速器科学中心）；Department of Physics, Graduate School of Science, The University of Tokyo（东京大学理学研究科物理学系）；Quark Nuclear Science Institute, Graduate School of Science, The University of Tokyo（东京大学理学研究科夸克核科学研究所）；Institute for Nuclear Physics, Johannes Gutenberg University Mainz（美因茨约翰内斯·古腾堡大学核物理研究所）；Helmholtz Institute Mainz, GSI Helmholtzzentrum für Schwerionenforschung（亥姆霍兹美因茨研究所，GSI重离子研究中心）；Department of Physics, Graduate School of Science, Tohoku University（东北大学理学研究科物理学系）；Graduate Program on Physics for the Universe (GP-PU), Tohoku University（东北大学宇宙物理学研究生项目）
Measurement of the Gerasimov-Drell-Hearn integrand for proton and deuteron from 200 to 1400 MeV
INFN Sezione di Pavia（意大利国家核物理研究所帕维亚分部）；Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn（波恩大学亥姆霍兹辐射与核物理研究所）；Department für Physik, Universität Basel（巴塞尔大学物理系）；Institut für Kernphysik, University of Mainz（美因茨大学核物理研究所）；SUPA School of Physics and Astronomy, University of Glasgow（格拉斯哥大学SUPA物理与天文学学院）；Kitzbühel Centre for Physics（基茨比厄尔物理中心）；Marian Smoluchowski Institute of Physics, Jagiellonian University（亚盖隆大学马里安·斯莫卢霍夫斯基物理研究所）；Joint Institute for Nuclear Research（俄罗斯联合核研究所）；The George Washington University（乔治华盛顿大学）
