Timelike form factor of the Kaon for|Q2|=M2(J/ψ)

2007/01/04 by Kamal K. Seth · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1103/physrevd.75.017301

published as Phys.Rev.D75:017301,2007 · 2 pages, 1 figure, published in PRD

arxiv created 2007/01/04 · openalex publication_date 2007/01/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The timelike form factor of the charged kaon is evaluated at |Q²|=M²(J/\ensuremathψ)=9.59 GeV² by relating it to B(J/\ensuremathψ\ensuremath→K⁺K^\ensuremath-), B(J/\ensuremathψ\ensuremath→K_SK_L) and B(J/\ensuremathψ\ensuremath→e⁺e^\ensuremath-). The resulting value, |Q²|F_K(9.59 GeV²)=0.81\ifmmode±\else\textpm\fi0.18 GeV² is found to be in good agreement with |Q²|F_K(13.5 GeV²)=0.85\ifmmode±\else\textpm\fi0.05 GeV² obtained recently by the direct measurement of the reaction e⁺e^\ensuremath-\ensuremath→K⁺K^\ensuremath-.

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• Strong and electromagneticJ/ψandψ(2S)decays into pion and kaon pairs