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Rise of the DIS structure function FL at small x caused by double-logarithmic corrections

B. I. Ermolaev, S. I. Troyan
2021 Journal of High Energy Physics  

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We present calculation of FL in the double-logarithmic approximation (DLA) and demonstrate that the synergic effect of the factor 1/x from the $$ {\alpha}_s^2 $$ α s 2 -order and the steep x-dependence of the totally resummed double logarithmic contributions of higher orders ensures the power-like rise of FL at small x and arbitrary Q2.
doi:10.1007/jhep03(2021)274 fatcat:aei6dtqatfhwldf2fgdktidr74
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B. I. Ermolaev, S. I. Troyan. "Rise of the DIS structure function FL at small x caused by double-logarithmic corrections." Journal of High Energy Physics (2021)