Weak K→π generalized form factors and transverse transition quark-spin density from the instanton vacuum
Hyeon-Dong SonDepartment of Physics, Inha University, Incheon 402-751, Republic of KoreaSeung-il NamDepartment of Physics, Pukyong National University, Busan 608-737, Republic of KoreaHyun-Chul KimDepartment of Physics, Inha University, Incheon 402-751, Republic of Korea
2015en
ABI
Abstract
We investigate the generalized K→π transition vector and tensor form factors, from which we derive the transverse quark spin density in the course of the K→π 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→π transition turns out to be very similar to those of the pion and the kaon.
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