Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-06-04
Phys.Part.Nucl. 36 (2005) 217-220
Physics
High Energy Physics
High Energy Physics - Phenomenology
To appear "Physics of Elementary Particles and Atomic Nuclei, Vol. 36 (2005)". Use latex, 6 pages, 1 figure eps
Scientific paper
Numerical calculations are performed and compared to the experimental data for the electromagnetic form factor of the kaon, which is extracted from both components of the electromagnetic current, $J^{+}$ and $J^{-}$, with a pseudo-scalar coupling of the quarks to the kaon. In the case of $J^{+}$ there is no pair term contribution in the Drell-Yan frame ($q^{+}=0$). However, for $J^{-}$, the pair term contribution is different from zero and necessary in order to preserve the rotational symmetry of the current. The free parameters are the quark masses and the regulator mass.
de Melo P. B. C. J.
Frederico Tobias
Pereira Fabiano P.
Tomio Lauro
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