Adler-Bardeen Theorem for the Axial Anomaly and the First Moment of the Polarized Virtual Photon Structure Function

2007 ◽  
Author(s):  
Takahiro Ueda ◽  
Tsuneo Uematsu ◽  
Ken Sasaki
Keyword(s):  
Structure Function ◽  
Virtual Photon ◽  
Photon Structure ◽  
Axial Anomaly ◽  
First Moment

scholarly journals THE POLARIZED PHOTON STRUCTURE FUNCTION $g_1^\gamma $ AS A PROBE OF CHIRAL SYMMETRY REALIZATIONS

1993 ◽  
Vol 08 (04) ◽  
pp. 373-387 ◽  
Author(s):  
G.M. SHORE ◽  
G. VENEZIANO
Keyword(s):  
Correlation Function ◽  
Structure Function ◽  
Chiral Symmetry ◽  
Chiral Limit ◽  
Axial Vector ◽  
Photon Structure ◽  
First Moment ◽  
The Way

The first moment of the polarized photon structure function [Formula: see text] is determined by the anomalous three-current axial-vector-vector (AVV) correlation function. Its dependence on the off-shell momentum κ2 of the target photon is a direct probe of the way chiral symmetry is realized in the AVV function. A careful account is given of the effect of different realizations of chiral symmetry on the AVV correlation function with special emphasis on the delicate chiral limit, where the occurrence of singularities in the invariant amplitudes makes the relation with the first moment of [Formula: see text] more subtle. The behavior of [Formula: see text] as κ2 is increased through the thresholds associated with the different quarks and leptons is described.

scholarly journals Moments of the virtual photon structure function

1996 ◽  
Vol 72 (1) ◽  
pp. 123-131
Author(s):  
Sun Myong Kim ◽  
Thomas F. Walsh
Keyword(s):  
Structure Function ◽  
Virtual Photon ◽  
Photon Structure

POLARIZED DEEP INELASTIC SCATTERING FROM PHOTON TARGETS AND AXIAL ANOMALIES

1992 ◽  
Vol 07 (24) ◽  
pp. 6039-6051 ◽  
Author(s):  
STEVEN D. BASS
Keyword(s):  
Inelastic Scattering ◽  
Structure Function ◽  
Deep Inelastic Scattering ◽  
Gauge Invariance ◽  
Photon Structure ◽  
Sum Rule ◽  
Definition Of ◽  
First Moment ◽  
Polarized Deep Inelastic Scattering

We discuss the polarized photon structure function [Formula: see text] and focus on the first moment of [Formula: see text], where we explore the role of the axial QED and strong U(1) anomalies. Electromagnetic gauge invariance determines an exact sum rule for the first moment of [Formula: see text]. If we accept a recently proposed definition of “spin content” then we must also accept a polarized gluon component of Δgγ=2π/αs in the spin-one photon.

Heavy Flavour Effects in the Virtual Photon Structure Functions to NLO in QCD

2009 ◽  
Author(s):  
Tsuneo Uematsu ◽  
Yoshio Kitadono ◽  
Ken Sasaki ◽  
Takahiro Ueda
Keyword(s):  
Virtual Photon ◽  
Structure Functions ◽  
Photon Structure
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