Parton Distributions, d/u, and Higher Twist Effects at High X

Details Parton Distributions, d/u, and Higher Twist Effects at High X Parton Distributions, d/u, and Higher Twist Effects at High X

1998-09-22

arxiv.org/abs/hep-ph/9809480v4

Phys.Rev.Lett.82:2467-2470,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

4pages, 7 figures, Talk given at 29th International Conference on High-energy Physics, Vancouver, Canada, July 1998. Submitted

Scientific paper

10.1103/PhysRevLett.82.2467

A re-analysis of the NMC and SLAC data leads to a great improvement in our knowledge of the valence d and u parton distribution functions at high x. Standard parton distributions with our modifications are in good agreement with QCD predictions for d/u at x=1, and with the CDHSW nu p and nubar p data, the HERA charged current cross section data, the collider high-P_t jet data, and the CDF W asymmetry data. With the inclusion of target mass and higher twist corrections, the modified PDF's also describe all DIS data up to x = 0.98 and down to Q^2 = 1 GeV^2.

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