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Weak Kto π generalized form factors and transverse transition quark-spin density from the instanton vacuum
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Weak Kto π generalized form factors and transverse transition quark-spin density from the instanton vacuum
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We investigate the generalized $K\to \pi$ transition vector and tensor form factors, from which we derive the transverse quark spin density in the course of the $K\to\pi$ transition, based on the nonlocal chiral quark model from the instanton vacuum. The results of the transition tensor form factor are in good agreement with recent data of lattice QCD. The behavior of the transverse quark spin density of the $K\to\pi$ transition turn out to be very similar to those of the pion and the kaon.
Forward citations
Cited by 2 Pith papers
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Heavy mesons from the QCD instanton vacuum beyond the static limit
Computes f_B, residual mass Λ, kinetic matrix element λ1, and Isgur-Wise slope in instanton vacuum with finite-mass heavy-light vertex calibrated to B data.
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Electromagnetic form factors of the nucleon from the instanton vacuum
Nucleon EM form factors computed in instanton vacuum model with parameters fixed by saddle-point equation yield proton charge radius 0.841 fm matching muonic hydrogen and good agreement on Q2 dependence of ratios.
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