Measurements of d2n and A1n: Probing the neutron spin structure

doi:10.1103/PhysRevD.94.052003

Measurements of d2n and A1n: Probing the neutron spin structure

Physics And Astronomy

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Abstract

We report on the results of the E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement of the twist-3 matrix element d2 of the neutron (d2n) was conducted. The quantity d2n represents the average color Lorentz force a struck quark experiences in a deep inelastic electron scattering event off a neutron due to its interaction with the hadronizing remnants. This color force was determined from a linear combination of the third moments of the He3 spin structure functions, g1 and g2, after nuclear corrections had been applied to these moments. The structure functions were obtained from a measurement of the unpolarized cross section and of double-spin asymmetries in the scattering of a longitudinally polarized electron beam from a transversely and a longitudinally polarized He3 target. The measurement kinematics included two average Q2 bins of 3.2 GeV2 and 4.3 GeV2, and Bjorken-x 0.25≤x≤0.90 covering the deep inelastic and resonance regions.

Original language	English
Article number	052003
Journal	Physical Review D
Volume	94
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.94.052003
State	Published - Sep 6 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

Funding

This material is based upon work supported by the U.S. Department of Energy (DOE) Office of Science under Awards No. DE-FG02-94ER40844 and No. DE-FG02-87ER40315. Jefferson Lab is operated by the Jefferson Science Associates, LLC, under DOE Grant No. DE-AC05-060R23177.

Funders	Funder number
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	1405857, 1306126
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China
U.S. Department of Energy Oak Ridge National Laboratory U.S. Department of Energy National Science Foundation National Energy Research Scientific Computing Center
National Science Foundation Office of International Science and Engineering	DE-FG02-87ER40315, DE-AC05-060R23177, DE-FG02-94ER40844
National Science Foundation Office of International Science and Engineering

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.94.052003

Cite this

@article{ea7b7e10eb314d4981b07a02e08f1558,

title = "Measurements of d2n and A1n: Probing the neutron spin structure",

abstract = "We report on the results of the E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement of the twist-3 matrix element d2 of the neutron (d2n) was conducted. The quantity d2n represents the average color Lorentz force a struck quark experiences in a deep inelastic electron scattering event off a neutron due to its interaction with the hadronizing remnants. This color force was determined from a linear combination of the third moments of the He3 spin structure functions, g1 and g2, after nuclear corrections had been applied to these moments. The structure functions were obtained from a measurement of the unpolarized cross section and of double-spin asymmetries in the scattering of a longitudinally polarized electron beam from a transversely and a longitudinally polarized He3 target. The measurement kinematics included two average Q2 bins of 3.2 GeV2 and 4.3 GeV2, and Bjorken-x 0.25≤x≤0.90 covering the deep inelastic and resonance regions.",

author = "D. Flay and M. Posik and Parno, \{D. S.\} and K. Allada and Armstrong, \{W. R.\} 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 Fassi, \{L. El\} 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 E. Long",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = sep,

day = "6",

doi = "10.1103/PhysRevD.94.052003",

language = "English",

volume = "94",

number = "5",

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T1 - Measurements of d2n and A1n

T2 - Probing the neutron spin structure

AU - Flay, D.

AU - Posik, M.

AU - Parno, D. S.

AU - Allada, K.

AU - Armstrong, W. R.

AU - Averett, T.

AU - Benmokhtar, F.

AU - Bertozzi, W.

AU - Camsonne, A.

AU - Canan, M.

AU - Cates, G. D.

AU - Chen, C.

AU - Chen, J. P.

AU - Choi, S.

AU - Chudakov, E.

AU - Cusanno, F.

AU - Dalton, M. M.

AU - Deconinck, W.

AU - De Jager, C. W.

AU - Deng, X.

AU - Deur, A.

AU - Dutta, C.

AU - Fassi, L. El

AU - Franklin, G. B.

AU - Friend, M.

AU - Gao, H.

AU - Garibaldi, F.

AU - Gilad, S.

AU - Gilman, R.

AU - Glamazdin, O.

AU - Golge, S.

AU - Gomez, J.

AU - Guo, L.

AU - Hansen, O.

AU - Higinbotham, D. W.

AU - Holmstrom, T.

AU - Huang, J.

AU - Hyde, C.

AU - Ibrahim, H. F.

AU - Jiang, X.

AU - Jin, G.

AU - Katich, J.

AU - Kelleher, A.

AU - Kolarkar, A.

AU - Korsch, W.

AU - Kumbartzki, G.

AU - LeRose, J. J.

AU - Lindgren, R.

AU - Liyanage, N.

AU - Long, E.

PY - 2016/9/6

Y1 - 2016/9/6

N2 - We report on the results of the E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement of the twist-3 matrix element d2 of the neutron (d2n) was conducted. The quantity d2n represents the average color Lorentz force a struck quark experiences in a deep inelastic electron scattering event off a neutron due to its interaction with the hadronizing remnants. This color force was determined from a linear combination of the third moments of the He3 spin structure functions, g1 and g2, after nuclear corrections had been applied to these moments. The structure functions were obtained from a measurement of the unpolarized cross section and of double-spin asymmetries in the scattering of a longitudinally polarized electron beam from a transversely and a longitudinally polarized He3 target. The measurement kinematics included two average Q2 bins of 3.2 GeV2 and 4.3 GeV2, and Bjorken-x 0.25≤x≤0.90 covering the deep inelastic and resonance regions.

AB - We report on the results of the E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement of the twist-3 matrix element d2 of the neutron (d2n) was conducted. The quantity d2n represents the average color Lorentz force a struck quark experiences in a deep inelastic electron scattering event off a neutron due to its interaction with the hadronizing remnants. This color force was determined from a linear combination of the third moments of the He3 spin structure functions, g1 and g2, after nuclear corrections had been applied to these moments. The structure functions were obtained from a measurement of the unpolarized cross section and of double-spin asymmetries in the scattering of a longitudinally polarized electron beam from a transversely and a longitudinally polarized He3 target. The measurement kinematics included two average Q2 bins of 3.2 GeV2 and 4.3 GeV2, and Bjorken-x 0.25≤x≤0.90 covering the deep inelastic and resonance regions.

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U2 - 10.1103/PhysRevD.94.052003

DO - 10.1103/PhysRevD.94.052003

M3 - Article

AN - SCOPUS:84994692109

SN - 2470-0010

VL - 94

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052003

ER -

Measurements of d2n and A1n: Probing the neutron spin structure

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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