Timelike Form Factor of the Kaon for |Q2|=M2(J/psi)
Kamal K. Seth
Abstract
The timelike form factor of the charged kaon is evaluated at |Q2|=M2(J/psi)=9.59 GeV2 by relating it to B(J/psi->K+K-), B(J/psi->KSKL) and B(J/psi->e+e-). The resulting value, |Q2|FK(9.59 GeV2)=0.81+-0.18 GeV2 is found to be in good agreement with |Q2|FK(13.5 GeV2)=0.85+-0.05 GeV2 obtained recently by the direct measurement of the reaction e+e--> K+K-.
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