T and F asymmetries in π0 photoproduction on the proton

J. R M Annand, H. J. Arends, R. Beck, N. Borisov, A. Braghieri, W. J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, E. J. Downie, M. Dieterle, A. Fix, L. V. Fil'Kov, S. Garni, D. I. Glazier, W. Gradl, G. Gurevich, P. Hall Barrientos, D. Hamilton, D. HornidgeD. Howdle, G. M. Huber, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, V. Lisin, K. Livingston, I. J D Macgregor, J. Mancel, D. M. Manley, P. P. Martel, E. F. McNicoll, W. Meyer, D. G. Middleton, R. Miskimen, A. Mushkarenkov, A. Neganov, A. Nikolaev, M. Oberle, H. Ortega, M. Ostrick, P. Ott, P. B. Otte, B. Oussena, P. Pedroni, A. Polonski, V. V. Polyanski, S. Prakhov, G. Reicherz, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I. I. Strakovsky, Th Strub, I. Supek, L. Tiator, A. Thomas, M. Unverzagt, Yu A. Usov, D. P. Watts, D. Werthmüller, L. Witthauer, M. Wolfes

Результат исследований: Материалы для журналаСтатьярецензирование

18 Цитирования (Scopus)

Аннотация

The γp→π0p reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry F was measured for the first time and new high precision data for the target asymmetry T were obtained. The experiment was performed at the photon tagging facility of the Mainz Microtron (MAMI) using the Crystal Ball and TAPS photon spectrometers. The polarized cross sections were expanded in terms of associated Legendre functions and compared to recent predictions from several partial-wave analyses. The impact of the new data on our understanding of the underlying partial-wave amplitudes and baryon resonance contributions is discussed.

Язык оригиналаАнглийский
Номер статьи055209
ЖурналPhysical Review C - Nuclear Physics
Том93
Номер выпуска5
DOI
СостояниеОпубликовано - 31 мая 2016

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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