Neutron structure functions

Arrington, J.; Coester, F.; Holt, R. J.; Lee, T. S. H.

doi:10.1088/0954-3899/36/2/025005

Cited by 95 publications

(186 citation statements)

References 38 publications

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“…The analysis established that it is important to account properly for the Q 2 -dependence of the data and incorrect to use a simple convolution formula to analyze data, if that data does not satisfy the DIS kinematic constraints. When the CD-Bonn potential is used to determine the deuteron wave function, the method of (Arrington et al, 2009) produces a ratio similar to that labeled "Whitlow et al (Paris)" in Fig. II.10, which was obtained using a light-front approach with the null vector aligned along the direction of the incident electron beam (Frankfurt and Strikman, 1981).…”

Section: G the Neutron Structure Functionmentioning

confidence: 96%

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Nucleon and pion distribution functions in the valence region

2010

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We provide an experimental and theoretical perspective on the behavior of unpolarized distribution functions for the nucleon and pion on the valence-quark domain; namely, Bjorken-x > ∼ 0.4. This domain is key to much of hadron physics; e.g., a hadron is defined by its flavor content and that is a valence-quark property. Furthermore, its accurate parametrization is crucial to the provision of reliable input for large collider experiments. We focus on experimental extractions of distribution functions via electron and muon inelastic scattering, and from Drell-Yan interactions; and on theoretical treatments that emphasize an explanation of the distribution functions, providing an overview of major contemporary approaches and issues. Valence-quark physics is a compelling subject, which probes at the heart of our understanding of the Standard Model. There are numerous outstanding and unresolved challenges, which experiment and theory must confront. In connection with experiment, we explain that an upgraded Jefferson Lab facility is well-suited to provide new data on the nucleon, while a future electron ion collider could provide essential new data for the mesons. There is also great potential in using Drell-Yan interactions, at FNAL, J-PARC and GSI, to push into the large-x domain for both mesons and nucleons. We argue furthermore that explanation, in contrast to modeling and parametrization, requires a widespread acceptance of the need to adapt theory: to the lessons learnt already from the methods of nonperturbative quantum field theory; and a fuller exploitation of those methods. * Electronic address: holt@anl.gov † Electronic address: cdroberts@anl.gov

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Section: G the Neutron Structure Functionmentioning

confidence: 96%

“…A recent approach (Arrington et al, 2009) made use of the light-front, with null-plane dynamics and modern deuteron wavefunctions. This framework, which can be applied even when the the constraints of DIS kinematics are not met, greatly simplifies the convolution equation in terms of the nucleon structure functions.…”

Section: G the Neutron Structure Functionmentioning

confidence: 99%

Nucleon and pion distribution functions in the valence region

2010

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“…However, the lack of knowledge about the free neutron's structure has clouded these efforts. Theoretical estimates of the deuteron EMC ratio have also been made [27][28][29][30][31][32][33][34][35][36][37][38][39], often with the goal of isolating…”

Section: ) At Intermediate X Rmentioning

confidence: 99%