Measurement of the proton spin structure function g1p with a pure hydrogen target

A. Airapetian, N. Akopov, I. Akushevich, M. Amarian, E. C. Aschenauer, H. Avakian, R. Avakian, A. Avetissian, B. Bains, C. Baumgarten, M. Beckmann, S. Belostotski, E. Belz, T. Benisch, S. Bernreuther, N. Bianchi, J. Blouw, H. Böttcher, A. Borissov, J. BrackS. Brauksiepe, B. Braun, S. Brons, W. Brückner, A. Brüll, H. J. Bulten, G. P. Capitani, P. Carter, P. Chumney, E. Cisbani, G. R. Court, P. F. Dalpiaz, R. De Leo, E. De Sanctis, D. De Schepper, E. Devitsin, P. K.A. de Witt Huberts, P. Di Nezza, M. Düren, A. Dvoredsky, G. Elbakian, J. Ely, A. Fantoni, A. Fechtchenko, M. Ferstl, D. Fick, K. Fiedler, B. W. Filippone, H. Fischer, B. Fox, S. Frabetti, J. Franz, S. Frullani, M. A. Funk, N. D. Gagunashvili, H. Gao, Y. Gärber, F. Garibaldi, G. Gavrilov, P. Geiger, V. Gharibyan, V. Giordjian, A. Golendukhin, G. Graw, O. Grebeniouk, P. W. Green, L. G. Greeniaus, C. Grosshauser, M. Guidal, A. Gute, W. Haeberli, J. O. Hansen, D. Hasch, F. H. Heinsius, M. Henoch, R. Hertenberger, Y. Holler, R. J. Holt, W. Hoprich, H. Ihssen, M. Iodice, A. Izotov, H. E. Jackson, A. Jgoun, R. Kaiser, E. Kinney, A. Kisselev, P. Kitching, H. Kobayashi, N. Koch, K. Königsmann, M. Kolstein, H. Kolster, V. Korotkov, W. Korsch, V. Kozlov, L. H. Kramer, V. G. Krivokhijine, F. Kümmell, M. Kurisuno, G. Kyle, W. Lachnit, W. Lorenzon, N. C.R. Makins, S. I. Manaenkov, K. Martens, J. W. Martin, H. Marukyan, F. Masoli, A. Mateos, M. McAndrew, K. McIlhany, R. D. McKeown, F. Meißner, F. Menden, A. Metz, N. Meyners, O. Mikloukho, C. A. Miller, M. A. Miller, R. Milner, V. Mitsyn, A. Most, V. Muccifora, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. M. Nathan, F. Neunreither, W. D. Nowak, T. G. O'Neill, B. R. Owen, J. Ouyang, V. Papavassiliou, S. F. Pate, S. Potashov, D. H. Potterveld, G. Rakness, A. Reali, R. Redwine, A. R. Reolon, R. Ristinen, K. Rith, H. Roloff, P. Rossi, S. Rudnitsky, M. Ruh, D. Ryckbosch, Y. Sakemi, I. Savin, C. Scarlett, F. Schmidt, H. Schmitt, G. Schnell, K. P. Schüler, A. Schwind, J. Seibert, T. A. Shibata, K. Shibatani, T. Shin, V. Shutov, C. Simani, A. Simon, K. Sinram, P. Slavich, M. Spengos, E. Steffens, J. Stenger, J. Stewart, U. Stößlein, M. Sutter, H. Tallini, S. Taroian, A. Terkulov, B. Tipton, M. Tytgat, G. M. Urciuoli, R. Van de Vyver, J. F.J. van den Brand, G. van der Steenhoven, J. J. van Hunen, M. C. Vetterli, M. Vincter, J. Visser, E. Volk, W. Wander, S. E. Williamson, T. Wise, K. Woller, S. Yoneyama, H. Zohrabian

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239 Citations (Scopus)

Abstract

A measurement of the proton spin structure function g1p(x,Q2) in deep-inelastic scattering is presented. The data were taken with the 27.6 GeV longitudinally polarised positron beam at HERA incident on a longitudinally polarised pure hydrogen gas target internal to the storage ring. The kinematic range is 0.021 < x < 0.85 and 0.8 GeV2 < Q2 < 20 GeV2. The integral 0.0210.85(x) dx evaluated at Q02 of 2.5 GeV2 is 0.122 ± 0.003(stat.) ± 0.010(syst).

Original languageEnglish
Pages (from-to)484-492
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume442
Issue number1-4
DOIs
Publication statusPublished - 1998 Dec 3

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, E., Benisch, T., Bernreuther, S., Bianchi, N., Blouw, J., Böttcher, H., Borissov, A., ... Zohrabian, H. (1998). Measurement of the proton spin structure function g1p with a pure hydrogen target. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 442(1-4), 484-492. https://doi.org/10.1016/S0370-2693(98)01341-0