Tuesday, September 6, 2005, 11:00 am — Small Seminar Room, Bldg. 510
A signature indicating the existence of the S=+1 pentaquark
state Theta^+ has been reported in more than ten experiments
in a variety of reactions. On the other hand, there are a number of reports of non-observations from high statistics experiments. The main criticism for the existence of the Theta^+ is the low statistical significance. None of the positive results show a high significance with sufficient statistics. A new experiment to search for the Theta^+
in the photon-induced production on a deuteron has been pursued using the CLAS detector and the tagged-photon facility at Jefferson Laboratory. The integrated luminosity of the new data is about 10 times greater than the previously published CLAS data on a deuterium target.
In this talk, an experimental overview and preliminary
results will be presented.
Hosted by: Werner Vogelsang
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