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arXiv · 1009.6170

Parton Distribution Uncertainties using Smoothness Prior

Alexander Glazov·Sven Moch·Voica Radescu
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Abstract

A study of the parameterization uncertainty at low Bjorken $x \le 0.1$ for the parton distribution functions of the proton is presented. The study is based on the HERA I combined data using a flexible parameterization form based on Chebyshev polynomials with and without an additional regularization constraint. The accuracy of the data allows to determine the gluon density in the kinematic range of $0.0005 \le x \le 0.05 $ with a small parameterization uncertainty. An additional regularization prior leads to a significantly reduced uncertainty for $x \le 0.0005$.

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Alexander Glazov, Sven Moch, Voica Radescu. 2010-09-30. Parton Distribution Uncertainties using Smoothness Prior. https://doi.org/10.1016/j.physletb.2010.11.025

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