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Large-x Parton Distributions

S. Kuhlmann·J. Huston·J. Morfin·F. Olness·J. Pumplin·J. F. Owens·W. K. Tung·J. J. Whitmore
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Abstract

Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x>0.1. We examine the status of the gluon and quark distributions in light of new questions that have been raised in the past two years about "large-x" parton distributions, as well as recent measurements which have improved the parton uncertainties. Finally, we provide a status report of the data used in the global analysis, and note some of the open issues where future experiments, including those planned for Jefferson Labs, might contribute.

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S. Kuhlmann, J. Huston, J. Morfin, F. Olness, J. Pumplin, J. F. Owens, W. K. Tung, J. J. Whitmore. 2000-07-13. Large-x Parton Distributions. https://arxiv.org/abs/hep-ph/0007140

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