POWER CORRECTIONS TO THE PION–PHOTON TRANSITION FORM FACTOR Fπγ(Q2)-Reference-Cited by-同舟云学术

POWER CORRECTIONS TO THE PION–PHOTON TRANSITION FORM FACTOR Fπγ(Q2)

Published:2001-07-20 Issue:18 Volume:16 Page:3179-3190
ISSN:0217-751X
Container-title:International Journal of Modern Physics A
language:en
Short-container-title:Int. J. Mod. Phys. A

Author:

AGAEV SHAHIN S.¹,MUKHTAROV ABDULLA I.²

Affiliation:

1. High Energy Physics Lab., Baku State University, Z.Khalilov st.23, 370148 Baku, Azerbaijan

2. Department of Theoretical Physics, Faculty of Physics, Baku State University, Z.Khalilov st.23, 370148 Baku, Azerbaijan

Abstract

Power-suppressed corrections ~(1/Q2)p, p = 1,2… to the electromagnetic transition form factor Q2Fπγ(Q2) are estimated using the running coupling constant method. Within this method the renormalization scale in the QCD expression for Fπγ(Q2) is taken to be equal to [Formula: see text] (or to [Formula: see text]) and computation of the form factor with running coupling [Formula: see text] is carried out. In calculations the pion asymptotic and model distribution amplitudes (DAs), as well as DAs found in the context of the "naive non-Abelianization" approximation are employed. Comparisons are made with frozen coupling constant approximation results and with the experimental data.

Publisher

World Scientific Pub Co Pte Lt

Subject

Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217751X01004256

Reference20 articles.

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