Isospin quantum number of Ds0+(2317)
Arata Hayashigaki, Kunihiko Terasaki
Abstract
The Ds+ pi0 and Ds*+ gamma decays of the Ds0+(2317) are studied by assigning it to various charmed strange scalar mesons. As a result, it is found that its assignment to an iso-triplet four-quark meson is favored by the severest experimental constraint on the ratio of the rates for these decays, while assigning it to an I=0 state (a four-quark or a conventional cs) is inconsistent with this constraint.
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