128 research outputs found
A possibility to determine the P-parity of the pentaquark in the reaction
Spin structure of the reaction is analysed at the threshold in a model independent way under
assumption that the is an isosinglet. We found that the sign of the
spin-spin correlation parameter being measured in a double-spin
experiment, determines the P-parity of the unambiguously.
Furthermore we show that the polarization coefficients and
which describe the polarization transfer from polarized beam or target
to the final and are nonzero for a positive parity of
the and equal zero for a negative parity. It allows one to determine
the P-parity of the in a single-spin measurement, since the
polarization of the can be measured via its decay .Comment: 8 pages, Latex . The spin 3/2 of the and a discrimination
for the isospin T=0,1 and 2 are briefly discussed; minor corrections are
performe
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