Home
For authors
Submission status

Archive
Archive (English)
Current
      Volume 110
      Volume 109
      Volume 108
      Volume 107
      Volume 106
      Volume 105
      Volume 104
      Volume 103
      Volume 102
      Volume 101
      Volume 100
      Volume 99
      Volume 98
      Volume 97
      Volume 96
      Volume 95
      Volume 94
      Volume 93
Search
VOLUME 94 | ISSUE 7 | PAGE 543
On narrow nucleon excitation N*(1685)
V. Kuznetsov+, M. V. Polyakov° *, M. Thürmann*
+Institute for Nuclear Research, 117312 Moscow, Russia
°Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany
*St. Petersburg Institute for Nuclear Physics, 188300 St. Petersburg, Russia

Abstract
We perform estimates on putative narrow nucleon N*(1685) - the candidate for the non-strange member of the exotic anti-decuplet of baryons. In particular, we consider the recent high precision data on η photoproduction off free proton obtained by the Crystal Ball Collaboration at MAMI. We show that it is difficult to describe peculiarities of these new data in the invariant energy interval of W\sim 1650{-}1750 MeV in terms of known wide resonances. Using very simple estimates, we show that the data may indicate an existence of a narrow N*(1685) with small photocoupling to the proton.


Download PS file (GZipped, 224.8K)  |  Download PDF file (244.6K)


Список работ, цитирующих данную статью, см. здесь.

List of articles citing this article can be found here.