Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-09-02
Phys.Lett.B343:369-376,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
16pp. , 2 figures (uuencoded eps-files), LateX. Some misprints corrected, results unchanged
Scientific paper
10.1016/0370-2693(94)01443-G
Using the framework of QCD sum rules we predict the twist-3 contribution to the second moment of the polarized nucleon structure function $g_2(x)$. As the relevant local operator depends explicitely on the gluon field, we employ a recently studied interpolating nucleon current which contains three quark field and one gluon field operator. Despite the fact that our calculation is based on the analysis of a completely different correlation function, our estimates are consitent with those of Balitsky, Braun and Kolesnichenko who used a three-quark current.
Gornicki Pawel
Greiner Walter
Mankiewicz Lech
Schaefer Andreas
Stein Eckardt
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