Explicit expressions for the non-singlet and singlet structure functions g_1 at the small $x$-region are obtained. They include the total resummation of double-logarithmic contributions and accounting for the running QCD coupling effects. We predict that both the non-singlet and singlet g_1 asymptotically ~ x^{- \Delta}, with the singlet intercept = 0.86 and being more than twice larger than the non-singlet intercept = 0.4. The impact of the initial quark and gluon densities on the sign of g_1 at x << 1 is discussed.

B. I., E., Greco, M., S. I., T. (2004). Small x behavior of the nonsinglet and singlet structure functions G(1). PHYSICS OF PARTICLES AND NUCLEI, 35, 105-109.

Small x behavior of the nonsinglet and singlet structure functions G(1).

GRECO, Mario;
2004-01-01

Abstract

Explicit expressions for the non-singlet and singlet structure functions g_1 at the small $x$-region are obtained. They include the total resummation of double-logarithmic contributions and accounting for the running QCD coupling effects. We predict that both the non-singlet and singlet g_1 asymptotically ~ x^{- \Delta}, with the singlet intercept = 0.86 and being more than twice larger than the non-singlet intercept = 0.4. The impact of the initial quark and gluon densities on the sign of g_1 at x << 1 is discussed.
B. I., E., Greco, M., S. I., T. (2004). Small x behavior of the nonsinglet and singlet structure functions G(1). PHYSICS OF PARTICLES AND NUCLEI, 35, 105-109.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/136173
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