Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI

C. S. Akondi, J. R.M. Annand, H. J. Arends, R. Beck, A. Bernstein, 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 BarrientosD. Hamilton, D. Hornidge, D. 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. Martel, E. F. McNicoll, W. Meyer, D. Middleton, R. Miskimen, A. Mushkarenkov, B. M.K. Nefkens, A. Neganov, A. Nikolaev, M. Oberle, M. Ostrick, H. Ortega, 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 журналаСтатья

35 Цитирования (Scopus)

Аннотация

We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ→p→→ηp reaction up to a center-of-mass energy of W=1.9GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.

Язык оригиналаАнглийский
Номер статьи102001
ЖурналPhysical Review Letters
Том113
Номер выпуска10
DOI
СостояниеОпубликовано - 4 сен 2014

    Fingerprint

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Цитировать

Akondi, C. S., Annand, J. R. M., Arends, H. J., Beck, R., Bernstein, A., Borisov, N., Braghieri, A., Briscoe, W. J., Cherepnya, S., Collicott, C., Costanza, S., Downie, E. J., Dieterle, M., Fix, A., Fil'Kov, L. V., Garni, S., Glazier, D. I., Gradl, W., Gurevich, G., ... Wolfes, M. (2014). Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI. Physical Review Letters, 113(10), [102001]. https://doi.org/10.1103/PhysRevLett.113.102001