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Importance of a Measurement of F_L(x,Q^2) at HERA

R. S. Thorne
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Abstract

I investigate what a direct measurement of the longitudinal structure function F_L(x,Q^2) could teach us about the structure of the proton and the best way in which to use perturbative QCD for structure functions. I assume HERA running at a lowered beam energy for approximately 4-5 months and examine how well the measurement could distinguish between different theoretical approaches. I conclude that such a measurement would provide useful information on how to calculate structure functions and parton distributions at small x.

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R. S. Thorne. 2005-11-30. Importance of a Measurement of F_L(x,Q^2) at HERA. https://doi.org/10.1142/9789812773524_0031

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