Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/11125
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Type: | Journal article |
Title: | Parton distribution functions in the pion from lattice QCD |
Author: | Detmold, W. Melnitchouk, W. Thomas, A. |
Citation: | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2003; 68(3):034025-1-034025-9 |
Publisher: | American Physical Soc |
Issue Date: | 2003 |
ISSN: | 1550-7998 0556-2821 |
Statement of Responsibility: | W. Detmold, W. Melnitchouk, A. W. Thomas |
Abstract: | We analyze the moments of parton distribution functions in the pion calculated in lattice QCD, paying particular attention to their chiral extrapolation. Using the lowest three nontrivial moments calculated on the lattice, we assess the accuracy with which the x dependence of both the valence and sea quark distributions in the pion can be extracted. The resulting valence quark distributions at the physical pion mass are in fair agreement with existing Drell-Yan data, but the statistical errors are such that one cannot yet confirm (or rule out) the large-x behavior expected from hadron helicity conservation in perturbative QCD. However, one can expect that the next generation of calculations in lattice QCD will allow one to extract parton distributions with a level of accuracy comparable with current experiments. |
Rights: | ©2003 American Physical Society |
DOI: | 10.1103/PhysRevD.68.034025 |
Published version: | http://dx.doi.org/10.1103/physrevd.68.034025 |
Appears in Collections: | Aurora harvest 7 Special Research Centre for the Subatomic Structure of Matter publications |
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File | Description | Size | Format | |
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hdl_11125.pdf | Published version | 264.71 kB | Adobe PDF | View/Open |
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