Timelike Form Factor of the Kaon for |Q^2|=M^2(J/psi)

Abstract

The timelike form factor of the charged kaon is evaluated at |Q^2|=M^2(J/psi)=9.59 GeV^2 by relating it to B(J/psi->K+K-), B(J/psi->K_SK_L) and B(J/psi->e+e-). The resulting value, |Q^2|F_K(9.59 GeV^2)=0.81+-0.18 GeV^2 is found to be in good agreement with |Q^2|F_K(13.5 GeV^2)=0.85+-0.05 GeV^2 obtained recently by the direct measurement of the reaction e+e--> K+K-.

arXiv comment2 pages, 1 figure, published in PRD

References in corpus (7)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Precision Measurements of the Timelike Electromagnetic Form Factors of Pion, Kaon, and Proton
• On Large Final-State Phases in Heavy Meson Decays
• A large final-state interaction in the 0-0- decays of J/psi
• Improved measurement of the branching ratio of J/psi-->K_S K_L
• Does $J/\psi \to {\pi }^{+}{\pi }^{-}$ fix the Electromagnetic Form Factor $F_{\pi }(t)$ at $t=M_{J/\psi }^2$?

Cited by in corpus (5)

• High Precision Measurements of the Form Factors of Pion, Kaon, and Proton at Large Timelike Momentum Transfers
• Narrow resonances studies with the radiative return method
• Strong and Electromagnetic J/psi and psi(2S) Decays into Pion and Kaon Pairs
• Space-and Time-like Electromagnetic Kaon Form Factors
• Status of Phokhara