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. ERMOLAEV, GRECO M, & S.I. TROYAN (2004). Small x behavior of the nonsinglet and singlet structure functions G(1). PHYSICS OF PARTICLES AND NUCLEI, 35, 105-109.
Titolo: | Small x behavior of the nonsinglet and singlet structure functions G(1). | |
Autori: | ||
Data di pubblicazione: | 2004 | |
Rivista: | ||
Citazione: | B.I. ERMOLAEV, GRECO M, & S.I. TROYAN (2004). Small x behavior of the nonsinglet and singlet structure functions G(1). PHYSICS OF PARTICLES AND NUCLEI, 35, 105-109. | |
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. | |
Handle: | http://hdl.handle.net/11590/136173 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |