We have computed in perturbative QCD the structure function g2(x, Q2) of polarised leptoproduction at order αs on a quark target of mass m. Upon taking the first moment we find that it vanishes exactly at all orders in m2/Q2 as demanded by the validity of the Burkhardt-Cottingham sum rule, contrary to a recent claim. © 1994.
Altarelli, G., Lampe, B., Nason, P., Ridolfi, G. (1994). The Burkhardt-Cottingham sum rule in perturbative QCD. PHYSICS LETTERS. SECTION B, 334(1-2), 187-191 [10.1016/0370-2693(94)90609-2].
The Burkhardt-Cottingham sum rule in perturbative QCD
Nason, Paolo;
1994
Abstract
We have computed in perturbative QCD the structure function g2(x, Q2) of polarised leptoproduction at order αs on a quark target of mass m. Upon taking the first moment we find that it vanishes exactly at all orders in m2/Q2 as demanded by the validity of the Burkhardt-Cottingham sum rule, contrary to a recent claim. © 1994.
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