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arXiv · 0707.3379

The ratio of sigma_L/sigma_T in DIS at low x

Dieter Schildknecht
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Abstract

Assuming helicity independence for q-qbar scattering in the color-dipole picture, or, equivalently proportionality of sea quark and gluon distributions, we find R(W^2,Q^2) = 0.5 (approximately) at large Q^2, where R(W^2,Q^2) denotes the ratio of the longitudinal and transverse photoabsorption cross sections. The forthcoming direct measurements of R(W^2,Q^2) allow one to test the underlying hypotheses.

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Dieter Schildknecht. 2007-07-23. The ratio of sigma_L/sigma_T in DIS at low x. https://arxiv.org/abs/0707.3379

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