The Polarized photon structure function g(1)gamma as a probe of chiral symmetry realizations

Shore, G.M.; Veneziano, G.

doi:10.1142/S0217732393000386

The Polarized photon structure function g(1)gamma as a probe of chiral symmetry realizations

G.M. Shore
(
- CERN
)
,
G. Veneziano
(
- CERN
)

Sep, 1992

15 pages

Published in:

Mod.Phys.Lett.A 8 (1993) 373-387

DOI:

10.1142/S0217732393000386

Report number:

CERN-TH-6571-92

View in:

CERN Document Server

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Abstract: (WSP)

The first moment of the polarized photon structure function

g_1^\gamma \left( {y,\,Q^2 ;\,k^2 } \right)

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