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arXiv · 0802.0408

Higher Twist Contributions to the Structure Functions F_2^p(x,Q^2) and F_2^d(x,Q^2) at Large x and Higher Orders

Johannes Blümlein·Helmut Böttcher
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Abstract

The higher twist contributions to the deeply inelastic structure functions $F_2^{p}(x,Q^2)$ and $F_2^{d}(x,Q^2)$ for larger values of the Bjorken variable $x$ are extracted extrapolating the {twist--2} contributions measured in the large $W^2$ region to the region $4 \GeV^2 \leq W^2 \leq 12.5 \GeV^2$ applying target mass corrections. We compare the results for the NLO, NNLO and N$^3$LO analyzes and include also the large $x$ at N$^4$LO to the Wilson coefficients. A gradual lowering of the higher twist contributions going from NLO to N$^4$LO is observed, which stresses the importance of higher order corrections.

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Johannes Blümlein, Helmut Böttcher. 2008-03-12. Higher Twist Contributions to the Structure Functions F_2^p(x,Q^2) and F_2^d(x,Q^2) at Large x and Higher Orders. https://doi.org/10.1016/j.physletb.2008.03.026

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