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DEEP INELASTIC SPIN STRUCTURE FUNCTIONS AT SMALL x

Year: 2006

Type: conference-paper

Abstract: Explicit expressions for the non-singlet and singlet structure functions g_1 in the small-x region are obtained. They include the total resummation of the double- and single- logarithms of x and account for the running QCD coupling effects. Both the non-singlet and singlet structure functions are Regge behavied asymptotically, with the intercepts predicted in agreement with experiments. A detailed comparison with the DGLAP evolution equations for different values of x and Q^2 is performed. Finally, the role played by singular terms in DGLAP fits is discussed and explicitly shown to mimic the resummation of leading logarithms at small x.

DOI: 10.1142/9789812772657_0038

Authors: B. I. Ermolaev, M. Greco, S. I. Troyan

Institutions: Ioffe Institute, Roma Tre University, Petersburg Nuclear Physics Institute

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1847978422

FWCI:

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