Contribution of Quark-Mass-Dependent Operators to Higher Twist Effects in DIS

Details Contribution of Quark-Mass-Dependent Operators to Higher Twist Effects in DIS Contribution of Quark-Mass-Dependent Operators to Higher Twist Effects in DIS

1993-12-16

arxiv.org/abs/hep-ph/9312300v1

Phys.Rev. D49 (1994) 2242-2246

Physics

High Energy Physics

High Energy Physics - Phenomenology

14pages, RevTex, (To be published in Phys. Rev. D) University of Washington preprint DOE/ER/40427-22-N93

Scientific paper

10.1103/PhysRevD.49.2242

We look at the contribution of Quark-Mass-dependent twist-4 operators to the
second moments of spin averaged structure functions and the Bjorken sum rule.
Its contribution is non-negligible in the former case due to large Wilson
coefficients. We also discuss the values of the twist- 4 spin-2 nucleon matrix
element within present experimental constraints.

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