A new measurement of the spin-dependent structure function g1(x) of the deuteron

D. Adams*, B. Adeva, E. Arik, A. Arvidson, B. Badelek, M. K. Ballintijn, G. Bardin, G. Baum, P. Berglund, L. Betev, R. Birsa, P. Björkholm, B. E. Bonner, N. de Botton, F. Bradamante, A. Bressan, S. Bültmann, E. Burtin, C. Cavata, M. ClocchiattiD. Crabb, J. Cranshaw, T. Çuhadar, S. Dalla Torre, R. van Dantzig, A. Deshpande, S. Dhawan, C. Dulya, A. Dyring, S. Eichblatt, D. Fasching, F. Feinstein, C. Fernandez, B. Frois, J. A. Garzon, M. Giorgi, E. von Goeler, G. Gracia, R. Granier de Cassagnac, N. de Groot, M. Grosse Perdekamp, E. Gülmez, D. von Harrach, T. Hasegawa, P. Hautle, N. Hayashi, C. A. Heusch, N. Horikawa, V. W. Hughes, G. Igo, S. Ishimoto, T. Iwata, E. M. Kabuß, T. Kageya, A. Karev, H. J. Kessler, T. J. Ketel, A. Kishi, Yu Kisselev, L. Klostermann, D. Krämer, V. Krivokhijine, W. Kröger, K. Kurek, J. Kyynäräinen, M. Lamanna, U. Landgraf, J. M. Le Goff, F. Lehar, A. de Lesquen, J. Lichtenstadt, M. Litmaath, S. Lopez-Ponte, M. Lowe, A. Magnon, G. K. Mallot, F. Marie, A. Martin, J. Martino, T. Matsuda, B. Mayes, J. S. McCarthy, K. Medved, G. van Middelkoop, D. Miller, K. Mori, J. Moromisato, A. Nagaitsev, J. Nassalski, L. Naumann, T. O. Niinikoski, J. E.J. Oberski, A. Ogawa, C. Ozben, A. Penzo, C. Perez, F. Perrot-Kunne, D. Peshekhonov, R. Piegaia, L. Pinsky, S. Platchkov, M. Plo, D. Pose, H. Postma, J. Pretz, T. Pussieux, J. Pyrlik, I. Reyhancan, A. Rijllart, J. B. Roberts, S. Rock, M. Rodriguez, E. Rondio, I. Sabo, J. Saborido, A. Sandacz, I. Savin, P. Schiavon, R. Segel, R. Seitz, Y. Semertzidis, P. Shanahan, E. P. Sichtermann, G. I. Smirnov, A. Staude, A. Steinmetz, U. Stiegler, H. Stuhrmann, M. Szleper, F. Tessarotto, M. Velasco, J. Vogt, R. Voss, R. Weinstein, C. Whitten, R. Windmolders, R. Willumeit, W. Wislicki, A. Witzmann, A. M. Zanetti, J. Zhao

*Corresponding author for this work

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205 Scopus citations

Abstract

We present a new measurement of the spin-dependent structure function g1 d of the deuteron in deep inelastic scattering of 190 GeV polarised muons on polarised deuterons, in the kinematic range 0.003 < x < 0.7 and 1 GeV2 < Q2 < 60 GeV2. This structure function is found to be negative at small x. The first moment Γ1 d=∫0 1g 1 ddx evaluated at Q0 2 = 10 GeV2 is 0.034 ± 0.009 (stat.) ± 0.006 (syst.). This value is below the Ellis-Jaffe sum rule prediction by three standard deviations. Using our earlier determination of Γ1 p, we obtain Γ1 p - Γ1 n = 0.199 ± 0.038 which agrees with the Bjorken sum rule.

Original languageEnglish (US)
Pages (from-to)248-254
Number of pages7
JournalPhysics Letters B
Volume357
Issue number1-2
DOIs
StatePublished - Aug 31 1995

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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