Measurement of the neutron spin structure function gn1 with a polarized 3He internal target

K. Ackerstaff; A. Airapetian; I. Akushevich; N. Akopov; M. Amarian; E. C. Aschenauer; R. Avakian; H. Avakian; A. Avetissian; B. Bains; S. Barrow; M. Beckmann; S. Belostotski; J. E. Belz; T. Benisch; S. Bernreuther; N. Bianchi; S. Blanchard; J. Blouw; H. Böttcher; A. Borissov; J. Brack; B. Braun; B. Bray; W. Brückner; A. Briill; E. E.W. Bruins; H. J. Bulten; G. P. Capitani; P. Carter; E. Cisbani; G. R. Court; P. P.J. Delheij; E. Devitsin; C. W. de Jager; E. de Sanctis; D. de Schepper; P. K.A. de Witt Huberts; M. Düren; A. Dvoredsky; G. Elbakian; A. Fechtchenko; M. Ferstl; D. Fick; K. Fiedler; B. W. Filippone; H. Fischer; H. T. Fortune; J. Franz; S. Frullani; M. A. Funk; N. D. Gagunashvili; P. Galumian; H. Gao; Y. Gärber; F. Garibaldi; P. Geiger; V. Gharibyan; A. Golendoukhin; G. Graw; O. Grebeniouk; P. W. Green; L. G. Greeniaus; C. Grosshauser; A. Gute; V. Gyurjyan; J. P. Haas; W. Haeberli; J. O. Hansen; D. Hasch; O. Häusser; R. S. Henderson; T. Henkes; R. Hertenberger; Y. Holler; R. J. Holt; H. Ihssen; M. Iodice; A. Izotov; H. E. Jackson; A. Jgoun; C. Jones; R. Kaiser; E. Kinney; M. Kirsch; A. Kisselev; P. Kitching; N. Koch; K. Königsmann; M. Kolstein; H. Kolster; W. Korsch; V. Kozlov; L. H. Kramer; B. Krause; V. G. Krivokhijine; M. Kückes; G. Kyle; W. Lachnit; W. Lorenzon; A. Lung; N. C.R. Makins; S. I. Manaenkov; F. K. Martens; J. W. Martin; A. Mateos; K. Mcllhany; R. D. McKeown; F. Meissner; D. Mercer; A. Metz; N. Meyners; O. Mikloukho; C. A. Miller; M. A. Miller; R. G. Milner; V. Mitsyn; A. Most; R. Mozzetti; V. Muccifora; A. Nagaitsev; Y. Naryshkin; A. M. Nathan; F. Neunreither; M. Niczyporuk; W. D. Nowak; M. Nupieri; P. Oelwein; H. Ogami; T. G. O'Neill; R. Openshaw; V. Papavassiliou; S. F. Pate; M. Pitt; S. Potashov; D. H. Potterveld; B. Povh; G. Rakness; R. Redwine; A. R. Reolon; R. Ristinen; K. Rith; G. Röper; H. Roloff; P. Rossi; S. Rudnitsky; M. Ruh; D. Ryckbosch; Y. Sakemi; I. Savin; K. P. Schüler; A. Schwind; T. A. Shibata; T. Shin; A. Simon; K. Sinram; W. R. Smythe; J. Sowinski; M. Spengos; E. Steffens; J. Stenger; J. Stewart; F. Stock; U. Stoesslein; M. Sutter; H. Tallini; S. Taroian; A. Terkulov; D. M. Thiessen; B. Tipton; A. Trudel; M. Tytgat; G. M. Urciuoli; R. van de Vyver; J. FJ van den Brand; G. van der Steenhoven; M. C. Vetterli; E. Volk; W. Wander; T. P. Welch; S. E. Williamson; T. Wise; T. Wölfel; K. Zapfe-Düren; H. Zohrabian; R. Zurmühle

doi:10.1016/S0370-2693(97)00611-4

Measurement of the neutron spin structure function gⁿ₁ with a polarized ³He internal target

K. Ackerstaff, A. Airapetian, I. Akushevich, N. Akopov, M. Amarian, E. C. Aschenauer, R. Avakian, H. Avakian, A. Avetissian, B. Bains, S. Barrow, M. Beckmann, S. Belostotski, J. E. Belz, T. Benisch, S. Bernreuther, N. Bianchi, S. Blanchard, J. Blouw, H. BöttcherA. Borissov, J. Brack, B. Braun, B. Bray, W. Brückner, A. Briill, E. E.W. Bruins, H. J. Bulten, G. P. Capitani, P. Carter, E. Cisbani, G. R. Court, P. P.J. Delheij, E. Devitsin, C. W. de Jager, E. de Sanctis, D. de Schepper, P. K.A. de Witt Huberts, M. Düren, A. Dvoredsky, G. Elbakian, A. Fechtchenko, M. Ferstl, D. Fick, K. Fiedler, B. W. Filippone, H. Fischer, H. T. Fortune, J. Franz, S. Frullani, M. A. Funk, N. D. Gagunashvili, P. Galumian, H. Gao, Y. Gärber, F. Garibaldi, P. Geiger, V. Gharibyan, A. Golendoukhin, G. Graw, O. Grebeniouk, P. W. Green, L. G. Greeniaus, C. Grosshauser, A. Gute, V. Gyurjyan, J. P. Haas, W. Haeberli, J. O. Hansen, D. Hasch, O. Häusser, R. S. Henderson, T. Henkes, R. Hertenberger, Y. Holler, R. J. Holt, H. Ihssen, M. Iodice, A. Izotov, H. E. Jackson, A. Jgoun, C. Jones, R. Kaiser, E. Kinney, M. Kirsch, A. Kisselev, P. Kitching, N. Koch, K. Königsmann, M. Kolstein, H. Kolster, W. Korsch, V. Kozlov, L. H. Kramer, B. Krause, V. G. Krivokhijine, M. Kückes, G. Kyle, W. Lachnit, W. Lorenzon, A. Lung, N. C.R. Makins, S. I. Manaenkov, F. K. Martens, J. W. Martin, A. Mateos, K. Mcllhany, R. D. McKeown, F. Meissner, D. Mercer, A. Metz, N. Meyners, O. Mikloukho, C. A. Miller, M. A. Miller, R. G. Milner, V. Mitsyn, A. Most, R. Mozzetti, V. Muccifora, A. Nagaitsev, Y. Naryshkin, A. M. Nathan, F. Neunreither, M. Niczyporuk, W. D. Nowak, M. Nupieri, P. Oelwein, H. Ogami, T. G. O'Neill, R. Openshaw, V. Papavassiliou, S. F. Pate, M. Pitt, S. Potashov, D. H. Potterveld, B. Povh, G. Rakness, R. Redwine, A. R. Reolon, R. Ristinen, K. Rith, G. Röper, H. Roloff, P. Rossi, S. Rudnitsky, M. Ruh, D. Ryckbosch, Y. Sakemi, I. Savin, K. P. Schüler, A. Schwind, T. A. Shibata, T. Shin, A. Simon, K. Sinram, W. R. Smythe, J. Sowinski, M. Spengos, E. Steffens, J. Stenger, J. Stewart, F. Stock, U. Stoesslein, M. Sutter, H. Tallini, S. Taroian, A. Terkulov, D. M. Thiessen, B. Tipton, A. Trudel, M. Tytgat, G. M. Urciuoli, R. van de Vyver, J. FJ van den Brand, G. van der Steenhoven, M. C. Vetterli, E. Volk, W. Wander, T. P. Welch, S. E. Williamson, T. Wise, T. Wölfel, K. Zapfe-Düren, H. Zohrabian, R. Zurmühle

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Results are reported from the HERMES experiment at HERA on a measurement of the neutron spin structure function gⁿ₁(x, Q²) in deep inelastic scattering using 27.5 GeV longitudinally polarized positrons incident on a polarized ³He internal gas target. The data cover the kinematic range 0.023 < x < 0.6 and 1 (GeV/c)² < Q² < 15 (GeV/c)². The integral ∫^0.6_0.023 gⁿ₁(x) dx evaluated at a fixed Q² of 2.5 (GeV/c)² is -0.034 ± 0.013(stat.) ±0.005(syst.). Assuming Regge behavior at low x, the first moment Γⁿ₁ = ∫¹₀ gⁿ₁(x) dx is -0.037 ± 0.013(stat.) ±0.005(syst.) ±0.006(extrapol.).

Original language	English (US)
Pages (from-to)	383-389
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	404
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(97)00611-4
State	Published - Jul 10 1997

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(97)00611-4

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Ackerstaff, K., Airapetian, A., Akushevich, I., Akopov, N., Amarian, M., Aschenauer, E. C., Avakian, R., Avakian, H., Avetissian, A., Bains, B., Barrow, S., Beckmann, M., Belostotski, S., Belz, J. E., Benisch, T., Bernreuther, S., Bianchi, N., Blanchard, S., Blouw, J., ... Zurmühle, R. (1997). Measurement of the neutron spin structure function gⁿ₁ with a polarized ³He internal target. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 404(3-4), 383-389. https://doi.org/10.1016/S0370-2693(97)00611-4

Ackerstaff, K, Airapetian, A, Akushevich, I, Akopov, N, Amarian, M, Aschenauer, EC, Avakian, R, Avakian, H, Avetissian, A, Bains, B, Barrow, S, Beckmann, M, Belostotski, S, Belz, JE, Benisch, T, Bernreuther, S, Bianchi, N, Blanchard, S, Blouw, J, Böttcher, H, Borissov, A, Brack, J, Braun, B, Bray, B, Brückner, W, Briill, A, Bruins, EEW, Bulten, HJ, Capitani, GP, Carter, P, Cisbani, E, Court, GR, Delheij, PPJ, Devitsin, E, de Jager, CW, de Sanctis, E, de Schepper, D, de Witt Huberts, PKA, Düren, M, Dvoredsky, A, Elbakian, G, Fechtchenko, A, Ferstl, M, Fick, D, Fiedler, K, Filippone, BW, Fischer, H, Fortune, HT, Franz, J, Frullani, S, Funk, MA, Gagunashvili, ND, Galumian, P, Gao, H, Gärber, Y, Garibaldi, F, Geiger, P, Gharibyan, V, Golendoukhin, A, Graw, G, Grebeniouk, O, Green, PW, Greeniaus, LG, Grosshauser, C, Gute, A, Gyurjyan, V, Haas, JP, Haeberli, W, Hansen, JO, Hasch, D, Häusser, O, Henderson, RS, Henkes, T, Hertenberger, R, Holler, Y, Holt, RJ, Ihssen, H, Iodice, M, Izotov, A, Jackson, HE, Jgoun, A, Jones, C, Kaiser, R, Kinney, E, Kirsch, M, Kisselev, A, Kitching, P, Koch, N, Königsmann, K, Kolstein, M, Kolster, H, Korsch, W, Kozlov, V, Kramer, LH, Krause, B, Krivokhijine, VG, Kückes, M, Kyle, G, Lachnit, W, Lorenzon, W, Lung, A, Makins, NCR, Manaenkov, SI, Martens, FK, Martin, JW, Mateos, A, Mcllhany, K, McKeown, RD, Meissner, F, Mercer, D, Metz, A, Meyners, N, Mikloukho, O, Miller, CA, Miller, MA, Milner, RG, Mitsyn, V, Most, A, Mozzetti, R, Muccifora, V, Nagaitsev, A, Naryshkin, Y, Nathan, AM, Neunreither, F, Niczyporuk, M, Nowak, WD, Nupieri, M, Oelwein, P, Ogami, H, O'Neill, TG, Openshaw, R, Papavassiliou, V, Pate, SF, Pitt, M, Potashov, S, Potterveld, DH, Povh, B, Rakness, G, Redwine, R, Reolon, AR, Ristinen, R, Rith, K, Röper, G, Roloff, H, Rossi, P, Rudnitsky, S, Ruh, M, Ryckbosch, D, Sakemi, Y, Savin, I, Schüler, KP, Schwind, A, Shibata, TA, Shin, T, Simon, A, Sinram, K, Smythe, WR, Sowinski, J, Spengos, M, Steffens, E, Stenger, J, Stewart, J, Stock, F, Stoesslein, U, Sutter, M, Tallini, H, Taroian, S, Terkulov, A, Thiessen, DM, Tipton, B, Trudel, A, Tytgat, M, Urciuoli, GM, van de Vyver, R, van den Brand, JFJ, van der Steenhoven, G, Vetterli, MC, Volk, E, Wander, W, Welch, TP, Williamson, SE, Wise, T, Wölfel, T, Zapfe-Düren, K, Zohrabian, H & Zurmühle, R 1997, 'Measurement of the neutron spin structure function gⁿ₁ with a polarized ³He internal target', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 404, no. 3-4, pp. 383-389. https://doi.org/10.1016/S0370-2693(97)00611-4

@article{ba9e67e2f3324701b018402ab582f050,

title = "Measurement of the neutron spin structure function gn1 with a polarized 3He internal target",

abstract = "Results are reported from the HERMES experiment at HERA on a measurement of the neutron spin structure function gn1(x, Q2) in deep inelastic scattering using 27.5 GeV longitudinally polarized positrons incident on a polarized 3He internal gas target. The data cover the kinematic range 0.023 < x < 0.6 and 1 (GeV/c)2 < Q2 < 15 (GeV/c)2. The integral ∫0.60.023 gn1(x) dx evaluated at a fixed Q2 of 2.5 (GeV/c)2 is -0.034 ± 0.013(stat.) ±0.005(syst.). Assuming Regge behavior at low x, the first moment Γn1 = ∫10 gn1(x) dx is -0.037 ± 0.013(stat.) ±0.005(syst.) ±0.006(extrapol.).",

author = "K. Ackerstaff and A. Airapetian and I. Akushevich and N. Akopov and M. Amarian and Aschenauer, {E. C.} and R. Avakian and H. Avakian and A. Avetissian and B. Bains and S. Barrow and M. Beckmann and S. Belostotski and Belz, {J. E.} and T. Benisch and S. Bernreuther and N. Bianchi and S. Blanchard and J. Blouw and H. B{\"o}ttcher and A. Borissov and J. Brack and B. Braun and B. Bray and W. Br{\"u}ckner and A. Briill and Bruins, {E. E.W.} and Bulten, {H. J.} and Capitani, {G. P.} and P. Carter and E. Cisbani and Court, {G. R.} and Delheij, {P. P.J.} and E. Devitsin and {de Jager}, {C. W.} and {de Sanctis}, E. and {de Schepper}, D. and {de Witt Huberts}, {P. K.A.} and M. D{\"u}ren and A. Dvoredsky and G. Elbakian and A. Fechtchenko and M. Ferstl and D. Fick and K. Fiedler and Filippone, {B. W.} and H. Fischer and Fortune, {H. T.} and J. Franz and S. Frullani and Funk, {M. A.} and Gagunashvili, {N. D.} and P. Galumian and H. Gao and Y. G{\"a}rber and F. Garibaldi and P. Geiger and V. Gharibyan and A. Golendoukhin and G. Graw and O. Grebeniouk and Green, {P. W.} and Greeniaus, {L. G.} and C. Grosshauser and A. Gute and V. Gyurjyan and Haas, {J. P.} and W. Haeberli and Hansen, {J. O.} and D. Hasch and O. H{\"a}usser and Henderson, {R. S.} and T. Henkes and R. Hertenberger and Y. Holler and Holt, {R. J.} and H. Ihssen and M. Iodice and A. Izotov and Jackson, {H. E.} and A. Jgoun and C. Jones and R. Kaiser and E. Kinney and M. Kirsch and A. Kisselev and P. Kitching and N. Koch and K. K{\"o}nigsmann and M. Kolstein and H. Kolster and W. Korsch and V. Kozlov and Kramer, {L. H.} and B. Krause and Krivokhijine, {V. G.} and M. K{\"u}ckes and G. Kyle and W. Lachnit and W. Lorenzon and A. Lung and Makins, {N. C.R.} and Manaenkov, {S. I.} and Martens, {F. K.} and Martin, {J. W.} and A. Mateos and K. Mcllhany and McKeown, {R. D.} and F. Meissner and D. Mercer and A. Metz and N. Meyners and O. Mikloukho and Miller, {C. A.} and Miller, {M. A.} and Milner, {R. G.} and V. Mitsyn and A. Most and R. Mozzetti and V. Muccifora and A. Nagaitsev and Y. Naryshkin and Nathan, {A. M.} and F. Neunreither and M. Niczyporuk and Nowak, {W. D.} and M. Nupieri and P. Oelwein and H. Ogami and O'Neill, {T. G.} and R. Openshaw and V. Papavassiliou and Pate, {S. F.} and M. Pitt and S. Potashov and Potterveld, {D. H.} and B. Povh and G. Rakness and R. Redwine and Reolon, {A. R.} and R. Ristinen and K. Rith and G. R{\"o}per and H. Roloff and P. Rossi and S. Rudnitsky and M. Ruh and D. Ryckbosch and Y. Sakemi and I. Savin and Sch{\"u}ler, {K. P.} and A. Schwind and Shibata, {T. A.} and T. Shin and A. Simon and K. Sinram and Smythe, {W. R.} and J. Sowinski and M. Spengos and E. Steffens and J. Stenger and J. Stewart and F. Stock and U. Stoesslein and M. Sutter and H. Tallini and S. Taroian and A. Terkulov and Thiessen, {D. M.} and B. Tipton and A. Trudel and M. Tytgat and Urciuoli, {G. M.} and {van de Vyver}, R. and {van den Brand}, {J. FJ} and {van der Steenhoven}, G. and Vetterli, {M. C.} and E. Volk and W. Wander and Welch, {T. P.} and Williamson, {S. E.} and T. Wise and T. W{\"o}lfel and K. Zapfe-D{\"u}ren and H. Zohrabian and R. Zurm{\"u}hle",

note = "Funding Information: We gratefully acknowledge the DESY management for its support and the DESY staff and the staffs of the collaborating institutions for their significant effort. This work was supported by the US Department of Energy and National Science Foundation; the Natural Sciences and Engineering Research Council of Canada; the German Bundesministerium ftir Bil-dung, Wissenschaft Forschung und Technologie, the German Academic Exchange Sevice (DAAD); the Italian Istituto Nazionale di Fisica Nucleare; Mon-busho International Scientific Research Program, JSPJ, and Toray Science Foundation of Japan; the Dutch Foundation for Fundamental Research of Matter; the NFWO/IIKW, Belgium; the UK Particle Physics and Astronomy Research Council and the INTAS contribution from the European Community.",

year = "1997",

month = jul,

day = "10",

doi = "10.1016/S0370-2693(97)00611-4",

language = "English (US)",

volume = "404",

pages = "383--389",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

TY - JOUR

T1 - Measurement of the neutron spin structure function gn1 with a polarized 3He internal target

AU - Ackerstaff, K.

AU - Airapetian, A.

AU - Akushevich, I.

AU - Akopov, N.

AU - Amarian, M.

AU - Aschenauer, E. C.

AU - Avakian, R.

AU - Avakian, H.

AU - Avetissian, A.

AU - Bains, B.

AU - Barrow, S.

AU - Beckmann, M.

AU - Belostotski, S.

AU - Belz, J. E.

AU - Benisch, T.

AU - Bernreuther, S.

AU - Bianchi, N.

AU - Blanchard, S.

AU - Blouw, J.

AU - Böttcher, H.

AU - Borissov, A.

AU - Brack, J.

AU - Braun, B.

AU - Bray, B.

AU - Brückner, W.

AU - Briill, A.

AU - Bruins, E. E.W.

AU - Bulten, H. J.

AU - Capitani, G. P.

AU - Carter, P.

AU - Cisbani, E.

AU - Court, G. R.

AU - Delheij, P. P.J.

AU - Devitsin, E.

AU - de Jager, C. W.

AU - de Sanctis, E.

AU - de Schepper, D.

AU - de Witt Huberts, P. K.A.

AU - Düren, M.

AU - Dvoredsky, A.

AU - Elbakian, G.

AU - Fechtchenko, A.

AU - Ferstl, M.

AU - Fick, D.

AU - Fiedler, K.

AU - Filippone, B. W.

AU - Fischer, H.

AU - Fortune, H. T.

AU - Franz, J.

AU - Frullani, S.

AU - Funk, M. A.

AU - Gagunashvili, N. D.

AU - Galumian, P.

AU - Gao, H.

AU - Gärber, Y.

AU - Garibaldi, F.

AU - Geiger, P.

AU - Gharibyan, V.

AU - Golendoukhin, A.

AU - Graw, G.

AU - Grebeniouk, O.

AU - Green, P. W.

AU - Greeniaus, L. G.

AU - Grosshauser, C.

AU - Gute, A.

AU - Gyurjyan, V.

AU - Haas, J. P.

AU - Haeberli, W.

AU - Hansen, J. O.

AU - Hasch, D.

AU - Häusser, O.

AU - Henderson, R. S.

AU - Henkes, T.

AU - Hertenberger, R.

AU - Holler, Y.

AU - Holt, R. J.

AU - Ihssen, H.

AU - Iodice, M.

AU - Izotov, A.

AU - Jackson, H. E.

AU - Jgoun, A.

AU - Jones, C.

AU - Kaiser, R.

AU - Kinney, E.

AU - Kirsch, M.

AU - Kisselev, A.

AU - Kitching, P.

AU - Koch, N.

AU - Königsmann, K.

AU - Kolstein, M.

AU - Kolster, H.

AU - Korsch, W.

AU - Kozlov, V.

AU - Kramer, L. H.

AU - Krause, B.

AU - Krivokhijine, V. G.

AU - Kückes, M.

AU - Kyle, G.

AU - Lachnit, W.

AU - Lorenzon, W.

AU - Lung, A.

AU - Makins, N. C.R.

AU - Manaenkov, S. I.

AU - Martens, F. K.

AU - Martin, J. W.

AU - Mateos, A.

AU - Mcllhany, K.

AU - McKeown, R. D.

AU - Meissner, F.

AU - Mercer, D.

AU - Metz, A.

AU - Meyners, N.

AU - Mikloukho, O.

AU - Miller, C. A.

AU - Miller, M. A.

AU - Milner, R. G.

AU - Mitsyn, V.

AU - Most, A.

AU - Mozzetti, R.

AU - Muccifora, V.

AU - Nagaitsev, A.

AU - Naryshkin, Y.

AU - Nathan, A. M.

AU - Neunreither, F.

AU - Niczyporuk, M.

AU - Nowak, W. D.

AU - Nupieri, M.

AU - Oelwein, P.

AU - Ogami, H.

AU - O'Neill, T. G.

AU - Openshaw, R.

AU - Papavassiliou, V.

AU - Pate, S. F.

AU - Pitt, M.

AU - Potashov, S.

AU - Potterveld, D. H.

AU - Povh, B.

AU - Rakness, G.

AU - Redwine, R.

AU - Reolon, A. R.

AU - Ristinen, R.

AU - Rith, K.

AU - Röper, G.

AU - Roloff, H.

AU - Rossi, P.

AU - Rudnitsky, S.

AU - Ruh, M.

AU - Ryckbosch, D.

AU - Sakemi, Y.

AU - Savin, I.

AU - Schüler, K. P.

AU - Schwind, A.

AU - Shibata, T. A.

AU - Shin, T.

AU - Simon, A.

AU - Sinram, K.

AU - Smythe, W. R.

AU - Sowinski, J.

AU - Spengos, M.

AU - Steffens, E.

AU - Stenger, J.

AU - Stewart, J.

AU - Stock, F.

AU - Stoesslein, U.

AU - Sutter, M.

AU - Tallini, H.

AU - Taroian, S.

AU - Terkulov, A.

AU - Thiessen, D. M.

AU - Tipton, B.

AU - Trudel, A.

AU - Tytgat, M.

AU - Urciuoli, G. M.

AU - van de Vyver, R.

AU - van den Brand, J. FJ

AU - van der Steenhoven, G.

AU - Vetterli, M. C.

AU - Volk, E.

AU - Wander, W.

AU - Welch, T. P.

AU - Williamson, S. E.

AU - Wise, T.

AU - Wölfel, T.

AU - Zapfe-Düren, K.

AU - Zohrabian, H.

AU - Zurmühle, R.

N1 - Funding Information: We gratefully acknowledge the DESY management for its support and the DESY staff and the staffs of the collaborating institutions for their significant effort. This work was supported by the US Department of Energy and National Science Foundation; the Natural Sciences and Engineering Research Council of Canada; the German Bundesministerium ftir Bil-dung, Wissenschaft Forschung und Technologie, the German Academic Exchange Sevice (DAAD); the Italian Istituto Nazionale di Fisica Nucleare; Mon-busho International Scientific Research Program, JSPJ, and Toray Science Foundation of Japan; the Dutch Foundation for Fundamental Research of Matter; the NFWO/IIKW, Belgium; the UK Particle Physics and Astronomy Research Council and the INTAS contribution from the European Community.

PY - 1997/7/10

Y1 - 1997/7/10

N2 - Results are reported from the HERMES experiment at HERA on a measurement of the neutron spin structure function gn1(x, Q2) in deep inelastic scattering using 27.5 GeV longitudinally polarized positrons incident on a polarized 3He internal gas target. The data cover the kinematic range 0.023 < x < 0.6 and 1 (GeV/c)2 < Q2 < 15 (GeV/c)2. The integral ∫0.60.023 gn1(x) dx evaluated at a fixed Q2 of 2.5 (GeV/c)2 is -0.034 ± 0.013(stat.) ±0.005(syst.). Assuming Regge behavior at low x, the first moment Γn1 = ∫10 gn1(x) dx is -0.037 ± 0.013(stat.) ±0.005(syst.) ±0.006(extrapol.).

AB - Results are reported from the HERMES experiment at HERA on a measurement of the neutron spin structure function gn1(x, Q2) in deep inelastic scattering using 27.5 GeV longitudinally polarized positrons incident on a polarized 3He internal gas target. The data cover the kinematic range 0.023 < x < 0.6 and 1 (GeV/c)2 < Q2 < 15 (GeV/c)2. The integral ∫0.60.023 gn1(x) dx evaluated at a fixed Q2 of 2.5 (GeV/c)2 is -0.034 ± 0.013(stat.) ±0.005(syst.). Assuming Regge behavior at low x, the first moment Γn1 = ∫10 gn1(x) dx is -0.037 ± 0.013(stat.) ±0.005(syst.) ±0.006(extrapol.).

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U2 - 10.1016/S0370-2693(97)00611-4

DO - 10.1016/S0370-2693(97)00611-4

M3 - Article

AN - SCOPUS:0039968183

SN - 0370-2693

VL - 404

SP - 383

EP - 389

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -