On the twist-2 and twist-3 contributions to the spin-dependent electroweak structure functions
نویسندگان
چکیده
منابع مشابه
On the Twist 2 and Twist 3 Contributions to the Spin-dependent Electroweak Structure Functions
The twist 2 and twist 3 contributions of the polarized deep-inelastic structure functions are calculated both for neutral and charged current interactions using the operator product expansion in lowest order in QCD. The relations between the different structure functions are determined. New integral relations are derived between the twist 2 contributions of the structure functions g3(x,Q ) and ...
متن کاملIntegral Relations for Twist 2 and Twist 3 Contributions to Polarized Structure Functions
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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The nucleon mass corrections are calculated to all polarized structure functions for neutral and charged current deep inelastic scattering in lowest order in the coupling constant. The impact of the target mass corrections on the general relations between the twist–2 and twist–3 parts of the structure functions is studied and three new relations between the twist–3 contributions are derived. Th...
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We review the nucleon’s twist-3 polarized structure functions from the viewpoint of gauge invariant, nonlocal light-cone operators in QCD. We discuss a systematic treatment of the polarized structure functions and the corresponding parton distribution functions. We emphasize unique features of higher twist distributions, and the role of the QCD equations of motion to derive their anomalous dime...
متن کاملHigher - twist Effects in Spin Structure Functions
We discuss the QCD effects of the higher-twist operators in the nucleon spin-dependent structure functions measured by the polarized deep inelastic leptoproduction. We particularly study the renormalization of the twist-3 and twist-4 operators within the framework of operator product expansions and renormalization group methods in perturbative QCD. Emphasis will be placed on the role of the ope...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1997
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(97)00234-4