Experimental study of theγp→ηpreaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C)

6533b853fe1ef96bd12abfaf

RESEARCH PRODUCT

Experimental study of theγp→ηpreaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C)

T. C. Jude H. J. Arends A. Nikolaev A. Fix D. I. Glazier J. C. Mcgeorge S. Cherepnya J. D. Kellie B. M. K. Nefkens A. Polonski David Hamilton S. N. Prakhov Andy Thomas L. V. Fil'kov E. F. Mcnicoll B. Mckinnon Michaela Thiel H. Berghäuser J. Robinson D. Mekterovic B. Krusche P. Aguar-bartolomé Mark W. Paris Yasser Maghrbi D. M. Manley M. Korolija Jrm Annand M. Ostrick R. Kondratiev M. Kotulla Jason Brudvik A. Starostin F. Pheron D. Branford E. J. Downie E. J. Downie I. I. Strakovsky T. Rostomyan M. Martinez D. I. Sober B. Demissie V. Metag I. Supek V. Lisin Ron L. Workman D. Werthmüller I. Keshelashvili O. Jahn M. H. Sikora R. Gregor V. L. Kashevarov A. Koulbardis P. Pedroni L. K. Akasoy E. Heid E. Heid Sasa Micanovic Z. Marinides A. N. Mushkarenkov R. F. B. Codling F. Zehr M. Unverzagt D. G. Middleton S. P. Kruglov I. J. D. Macgregor B. Freehart I. Zamboni A. Braghieri R. Beck D. Hornidge P. Drexler Ya. I. Azimov R. A. Arndt S. Schumann R. W. Novotny I. Jaegle P. B. Otte L. Tiator W. J. Briscoe B. Oussena D. P. Watts I. M. Suarez G. Rosner K. Bantawa V. S. Bekrenev K. Livingston

subject

Physics Nuclear and High Energy Physics Meson 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Partial wave analysis Hadron Bremsstrahlung 01 natural sciences Nuclear physics Particle decay 0103 physical sciences Nuclear Experiment 010306 general physics Nucleon Microtron Crystal Ball

description

The gamma p - = 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) gamma p -< eta p -< 3 pi(0) p -< 6 gamma p events allows a detailed study of the reaction dynamics. The gamma p -< eta p 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 the latest SAID and MAID fits that included our data.

year	journal	country	edition	language
2010-09-22	Physical Review C

https://doi.org/10.1103/physrevc.82.035208