Precision determination of the neutron spin structure function gn1

E154 Collaboration

doi:10.1103/PhysRevLett.79.26

Precision determination of the neutron spin structure function gⁿ₁

E154 Collaboration

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Abstract

We report on a precision measurement of the neutron spin structure function gⁿ₁ using deep inelastic scattering of polarized electrons by polarized ³He. For the kinematic range 0.014 < x < 0.7 and 1 < Q² < 17(GeV/c)², we obtain ∫0.014^0.7 gⁿ₁(x)dx = −0.036 ± 0.004(stat) ± 0.005(syst) at an average Q² = 5(GeV/c)². We find relatively large negative values for gⁿ₁ at low x. The results call into question the usual Regge theory method for extrapolating to x = 0 to find the full neutron integral ∫ 1gⁿ₁(x) dx, needed for testing the quark-parton model and QCD sum rules.

Original language	English (US)
Pages (from-to)	26-30
Number of pages	5
Journal	Physical review letters
Volume	79
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.79.26
State	Published - 1997

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.79.26

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@article{75eff70d31be436a9b4ba5e5de917a13,

title = "Precision determination of the neutron spin structure function gn1",

abstract = "We report on a precision measurement of the neutron spin structure function gn1 using deep inelastic scattering of polarized electrons by polarized 3He. For the kinematic range 0.014 < x < 0.7 and 1 < Q2 < 17(GeV/c)2, we obtain ∫0.0140.7 gn1(x)dx = −0.036 ± 0.004(stat) ± 0.005(syst) at an average Q2 = 5(GeV/c)2. We find relatively large negative values for gn1 at low x. The results call into question the usual Regge theory method for extrapolating to x = 0 to find the full neutron integral ∫ 1gn1(x) dx, needed for testing the quark-parton model and QCD sum rules.",

author = "\{E154 Collaboration\} and K. Abe and T. Akagi and Anderson, \{B. D.\} and Anthony, \{P. L.\} and Arnold, \{R. G.\} and T. Averett and Band, \{H. R.\} and Berisso, \{C. M.\} and P. Bogorad and H. Borel and Bosted, \{P. E.\} and V. Breton and Buenerd, \{M. J.\} and Cates, \{G. D.\} and Chupp, \{T. E.\} and S. Churchwell and Coulter, \{K. P.\} and M. Daoudi and P. Decowski and R. Erickson and Fellbaum, \{J. N.\} and H. Fonvieille and R. Gearhart and V. Ghazikhanian and Griffioen, \{K. A.\} and Hicks, \{R. S.\} and R. Holmes and Hughes, \{E. W.\} and G. Igo and S. Incerti and Johnson, \{J. R.\} and W. Kahl and M. Khayat and Kolomensky, \{Yu G.\} and Kuhn, \{S. E.\} and K. Kumar and M. Kuriki and R. Lombard-Nelsen and Manley, \{D. M.\} and J. Marroncle and T. Maruyama and T. Marvin and W. Meyer and Meziani, \{Z. E.\} and D. Miller and G. Mitchell and M. Olson and Peterson, \{G. A.\} and Petratos, \{G. G.\} and Romalis, \{M. V.\}",

year = "1997",

doi = "10.1103/PhysRevLett.79.26",

language = "English (US)",

volume = "79",

pages = "26--30",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Precision determination of the neutron spin structure function gn1

AU - E154 Collaboration

AU - Abe, K.

AU - Akagi, T.

AU - Anderson, B. D.

AU - Anthony, P. L.

AU - Arnold, R. G.

AU - Averett, T.

AU - Band, H. R.

AU - Berisso, C. M.

AU - Bogorad, P.

AU - Borel, H.

AU - Bosted, P. E.

AU - Breton, V.

AU - Buenerd, M. J.

AU - Cates, G. D.

AU - Chupp, T. E.

AU - Churchwell, S.

AU - Coulter, K. P.

AU - Daoudi, M.

AU - Decowski, P.

AU - Erickson, R.

AU - Fellbaum, J. N.

AU - Fonvieille, H.

AU - Gearhart, R.

AU - Ghazikhanian, V.

AU - Griffioen, K. A.

AU - Hicks, R. S.

AU - Holmes, R.

AU - Hughes, E. W.

AU - Igo, G.

AU - Incerti, S.

AU - Johnson, J. R.

AU - Kahl, W.

AU - Khayat, M.

AU - Kolomensky, Yu G.

AU - Kuhn, S. E.

AU - Kumar, K.

AU - Kuriki, M.

AU - Lombard-Nelsen, R.

AU - Manley, D. M.

AU - Marroncle, J.

AU - Maruyama, T.

AU - Marvin, T.

AU - Meyer, W.

AU - Meziani, Z. E.

AU - Miller, D.

AU - Mitchell, G.

AU - Olson, M.

AU - Peterson, G. A.

AU - Petratos, G. G.

AU - Romalis, M. V.

PY - 1997

Y1 - 1997

N2 - We report on a precision measurement of the neutron spin structure function gn1 using deep inelastic scattering of polarized electrons by polarized 3He. For the kinematic range 0.014 < x < 0.7 and 1 < Q2 < 17(GeV/c)2, we obtain ∫0.0140.7 gn1(x)dx = −0.036 ± 0.004(stat) ± 0.005(syst) at an average Q2 = 5(GeV/c)2. We find relatively large negative values for gn1 at low x. The results call into question the usual Regge theory method for extrapolating to x = 0 to find the full neutron integral ∫ 1gn1(x) dx, needed for testing the quark-parton model and QCD sum rules.

AB - We report on a precision measurement of the neutron spin structure function gn1 using deep inelastic scattering of polarized electrons by polarized 3He. For the kinematic range 0.014 < x < 0.7 and 1 < Q2 < 17(GeV/c)2, we obtain ∫0.0140.7 gn1(x)dx = −0.036 ± 0.004(stat) ± 0.005(syst) at an average Q2 = 5(GeV/c)2. We find relatively large negative values for gn1 at low x. The results call into question the usual Regge theory method for extrapolating to x = 0 to find the full neutron integral ∫ 1gn1(x) dx, needed for testing the quark-parton model and QCD sum rules.

UR - https://www.scopus.com/pages/publications/7244240884

UR - https://www.scopus.com/pages/publications/7244240884#tab=citedBy

U2 - 10.1103/PhysRevLett.79.26

DO - 10.1103/PhysRevLett.79.26

M3 - Article

AN - SCOPUS:7244240884

SN - 0031-9007

VL - 79

SP - 26

EP - 30

JO - Physical review letters

JF - Physical review letters

IS - 1

ER -

Precision determination of the neutron spin structure function gⁿ₁

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