Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-05-26
Eur.Phys.J.C71:1590,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 5 figures
Scientific paper
10.1140/epjc/s10052-011-1590-9
We derive the Leading-Order master equation to extract the polarized gluon distribution G(x;Q^2) = x \deltag(x;Q^2) from polarized proton structure function, g1p(x;Q^2). By using a Laplace-transform technique, we solve the master equation and derive the polarized gluon distribution inside the proton. The test of accuracy which are based on our calculations with two different methods confirms that we achieve to the correct solution for the polarized gluon distribution. We show that accurate experimental knowledge of g1p(x;Q^2) in a region of Bjorken x and Q^2, is all that is needed to determine the polarized gluon distribution in that region. Therefore, to determine the gluon polarization \deltag /g,we only need to have accurate experimental data on un-polarized and polarized structure functions (F2p (x;Q^2) and g1p(x;Q^2)).
Mirjalili Abolfazl
Taghavi-Shahri Fatemeh
Yazdanpanah Mohammad. M.
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