Электронный каталог

Статья

Mikhailov, S.V.
Endpoint Behavior of Distribution Amplitudes of Pion and Longitudinally Polarized rho Meson Under the Influence of Renormalon-Chain Contributions / S.V.Mikhailov, N.Volchanskiy // Physical Review D [Electronic resource]. – 2023. – Vol.108, No.9. – P.096015. – URL: https://doi.org/10.1103/PhysRevD.108.096015. – Bibliogr.:26.

We calculate the two-point massless QCD correlator of nonlocal (composite) vector quark currents with chains of fermion one-loop radiative corrections inserted into gluon lines. The correlator depends on the Bjorken fraction x related to the composite current and, under large-β&sub(0) approximation, gives the main contributions in each order of perturbation theory. In the mentioned approximation, these contributions dominate the endpoint behavior of the leading-twist distribution amplitudes of light mesons in the framework of QCD sum rules. Based on this, we analyze the endpoint behavior of these distribution amplitudes for π and longitudinally polarized ρ∥ mesons and find inequalities for their moments.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$
Бюллетени = 7/024