TWIST-3 EFFECTS IN POLARIZED PHOTON STRUCTURE
نویسندگان
چکیده
منابع مشابه
Twist-3 Effects in Polarized Photon Structure *
In recent years there has been growing interest in the polarized photon structure functions. Especially the first moment of a photon structure function g 1 has attracted much attention in connection with the axial anomaly which is also relevant in the nucleon spin structure function g p(n) 1 . The polarized structure function g γ 1 could be experimentally studied in the polarized version of ep ...
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We discuss the relations between the twist 2 and twist 3 contributions to polarized deep-inelastic scattering structure functions both for neutral and charged current interactions which are predicted by the operator product expansion in lowest order in QCD. INTRODUCTION In the case of polarized deep inelastic scattering the cross sections depend on (up to) three unpolarized Fi(x,Q 2)3i=1 and fi...
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We study target mass effects in the polarized virtual photon structure functions g 1 (x, Q , P ), g 2 (x, Q , P ) in the kinematic region Λ P 2 Q, where −Q2(−P ) is the mass squared of the probe (target) photon. We obtain the expressions for g 1 (x, Q , P ) and g 2 (x, Q , P ) in closed form by inverting the Nachtmann moments for the twist-2 and twist-3 operators. Numerical analysis shows that ...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2003
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x03014824