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26 April 2024

» arxiv » hep-ph/0404066

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Higher Twists and Color Polarizabilities in the Neutron
Z.-E. Meziani ; W. Melnitchouk ; J.-P. Chen ; Seonho Choi ; T. Averett ; G. Cates ; C.W. de Jager ; A. Deur ; H. Gao ; F. Garibaldi ; R. Gilman ; E.W. Hughes ; X. Jiang ; W. Korsch ; K. Kramer ; N. Liyanage ; K. Slifer ; J.-C. Yang ;
Date:	7 Apr 2004
Journal:	Phys.Lett. B613 (2005) 148-153
Subject:	hep-ph
Abstract:	Color polarizabilities of the neutron are extracted from data on the lowest moment of the spin-dependent $g_1$ structure function. New data in the resonance region from Jefferson Lab at $Q^2 alt 1$ GeV$^2$, in combination with world data at higher $Q^2$, allow a systematic determination of the $1/Q^2$ corrections, and provide the first constraints on $1/Q^4$ corrections. The results suggest that higher-twist effects in the neutron are small, and that quark-hadron duality may be approximately valid, even down to $Q^2 sim 1$ GeV$^2$.
Source:	arXiv, hep-ph/0404066
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