ISSN:
1434-601X
Schlagwort(e):
12.35Ht
;
13.75Cs
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract The relativistic3 P 0 model is applied to the $$p\bar p$$ annihilation into twoS-wave mesons. We calculate the branching ratios of the $$p\bar p$$ annihilation at rest into two mesons in the quark rearrangement model and in the quark annihilation model. In the annihilation model, we project the intermediate $$cq\bar q$$ state to eigenstates ofSU (4) with the relative angular momentum of $$cq\bar q$$ equals orp. In the rearrangement model, no annihilation occurs from theS-wave $$p\bar p$$ and certain branching ratios conflict with the experimental data. Detailed comparison with the experiment needs inclusion ofP-wave mesons in the final state, nevertheless we find that the annihilation model gives qualitatively better results than the rearrangement model. The effect of initial state interaction through $$N\bar \Delta \pm \Delta \bar {\rm N}$$ or $$\Delta \bar \Delta $$ channels is discussed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01290039
Permalink
