Abstract
We investigate the spin structure of the kaon, based on the nonlocal chiral quark model from the instanton vacuum. We first revisit the electromagnetic form factors of the pion and kaon, improving the results for the kaon. We evaluate the generalized tensor form factors of the kaon in order to determine the probability density of transversely polarized quarks inside the kaon. We consider the effects of flavor SU(3) symmetry breaking, so that the probability density of the up and strange quarks are examined in detail. It is found that the strange quark behaves differently inside the kaon in comparison with the up quark.
Highlights
PACS numbers: 14.40.-n, 12.39.Fe, 13.40.Gp Keywords: Kaon generalized form factors, spin structure of the kaon, nonlocal chiral quark model from the instanton vacuum, explicit flavor SU(3) symmetry breaking
We investigate the spin structure of the kaon, based on the nonlocal chiral quark model from the instanton vacuum
We consider the effects of flavor SU(3) symmetry breaking, so that the probability density of the up and strange quarks are examined in detail
Summary
PACS numbers: 14.40.-n, 12.39.Fe, 13.40.Gp Keywords: Kaon generalized form factors, spin structure of the kaon, nonlocal chiral quark model from the instanton vacuum, explicit flavor SU(3) symmetry breaking. Broniowski et al [4] have investigated the tensor form factors of the pion within the local and nonlocal chiral quark models [4] and have employed a larger value of the pion mass, i.e. mπ = 600 MeV in such a way that the results can be compared with the lattice data directly. They considered the case of the chiral limit. We will study the behavior of the up and strange quarks inside the kaon, so that we understand the effects of flavor SU(3) symmetry breaking on the distribution of the strange quarks inside the kaon
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