@article{45040fee81874d16a4f6ad0cf2207b5e,
title = "Precision measurements of A1n in the deep inelastic regime",
abstract = "We have performed precision measurements of the double-spin virtual-photon asymmetry A1 on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer and a longitudinally and transversely polarized 3He target. Our data cover a wide kinematic range 0.277≤x≤0.548 at an average Q2 value of 3.078 (GeV/c)2, doubling the available high-precision neutron data in this x range. We have combined our results with world data on proton targets to make a leading-order extraction of the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with a previous observation of an A1n zero crossing near x=0.5. We find no evidence of a transition to a positive slope in (δd+δd-)/(d+d-) up to x=0.548.",
keywords = "Nucleon structure, Parton distribution functions, Polarized electron scattering, Spin structure functions",
author = "{The Jefferson Lab Hall A Collaboration} and Parno, {D. S.} and D. Flay and M. Posik and K. Allada and W. Armstrong and T. Averett and F. Benmokhtar and W. Bertozzi and A. Camsonne and M. Canan and Cates, {G. D.} and C. Chen and Chen, {J. P.} and S. Choi and E. Chudakov and F. Cusanno and Dalton, {M. M.} and W. Deconinck and {de Jager}, {C. W.} and X. Deng and A. Deur and C. Dutta and {El Fassi}, L. and Franklin, {G. B.} and M. Friend and H. Gao and F. Garibaldi and S. Gilad and R. Gilman and O. Glamazdin and S. Golge and J. Gomez and L. Guo and O. Hansen and Higinbotham, {D. W.} and T. Holmstrom and J. Huang and C. Hyde and Ibrahim, {H. F.} and X. Jiang and G. Jin and J. Katich and A. Kelleher and A. Kolarkar and W. Korsch and G. Kumbartzki and LeRose, {J. J.} and R. Lindgren and N. Liyanage and Y. Zhang",
note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",
year = "2015",
month = may,
day = "1",
doi = "10.1016/j.physletb.2015.03.067",
language = "English",
volume = "744",
pages = "309--314",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
}