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| Paper IPM / Particles / 11585 |
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| Abstract: | |||||||
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The study about the O( 2
s ) corrections to the massless quarks and heavy flavor contributions
to the longitudinal structure function FL(x;Q2) of proton is presented. We use
the heavy flavor coefficient functions and massive operator matrix elements in unpolarized
deeply inelastic scattering in the region Q2>>m2. This representation is carried
in Mellin space QCD evolution programs. Numerical illustrations for the longitudinal
structure function are compared with available experimental data.
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