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The spin-dependent structure function g1(x) of the deuteron from polarized deep-inelastic muon scattering: Spin Muon Collaboration (SMC)

  • D. Adams
  • , B. Adeva
  • , T. Akdogan
  • , E. Arik
  • , A. Arvidson
  • , B. Badelek
  • , M. K. Ballintijn
  • , D. Bardin
  • , G. Bardin
  • , G. Baum
  • , P. Berglund
  • , L. Betev
  • , I. G. Bird
  • , R. Birsa
  • , P. Björkholm
  • , B. E. Bonner
  • , N. de Botton
  • , M. Boutemeur
  • , F. Bradamante
  • , A. Bravar
  • A. Bressan, S. Bültmann, E. Burtin, C. Cavata, D. Crabb, J. Cranshaw, T. Çuhadar, S. Dalla Torre, R. van Dantzig, B. Derro, A. Deshpande, S. Dhawan, C. Dulya, A. Dyring, S. Eichblatt, J. C. Faivre, D. Fasching, F. Feinstein, C. Fernandez, B. Frois, A. Gallas, J. A. Garzon, T. Gaussiran, M. Giorgi, E. von Goeler, F. Gomez, G. Gratia, N. de Groot, M. Grosse-Perdekamp, 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, L. Kalinovskaya, A. Karev, H. J. Kessler, T. J. Ketel, J. Kiryluk, A. Kishi, Y. Kisselev, L. Klostermann, D. Krämer, V. Krivokhijine, W. Kröger, V. Kukhtin, K. Kurek, J. Kyynäräinen, M. Lamanna, U. Landgraf, J. M. Le Goff, F. Lehar, A. de Lesquen, J. Lichtenstadt, T. Lindqvist, M. Litmaath, 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
  • Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
  • Istituto Nazionale di Fisica Nucleare (INFN)
  • Aalto University
  • University of California System
  • Joint Institute for Nuclear Research
  • University of Wisconsin-Madison
  • Johannes Gutenberg University Mainz
  • Ludwig Maximilian University of Munich (LMU)
  • Northeastern University
  • University of Santiago de Compostela
  • Instytut Chemii i Techniki Jądrowej (INCT)
  • Thomas Jefferson National Accelerator Facility
  • University of Freiburg
  • Stanford University
  • Istanbul Technical University
  • University of Virginia
  • RIKEN
  • Paul Scherrer Institute (PSI)
  • European Organization for Nuclear Research (CERN)
  • Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA)
  • University of Trieste (UNITS)
  • Telefonaktiebolaget LM Ericsson
  • Bielefeld University
  • Fermi National Accelerator Laboratory
  • Université de Montréal
  • Northwestern University
  • Delft University of Technology
  • University of Houston
  • Tel Aviv University
  • Yale University
  • Rice University
  • University of Geneva
  • Uppsala University
  • High Energy Accelerator Research Organization, Tsukuba
  • University of Miyazaki
  • Nagoya University
  • HEPHY Institute of High Energy Physics
  • Gammadata Instrument AB
  • Oy LM Ericsson AB
  • Helsinki University of Technology

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We present a new measurement of the spin-dependent structure function gd1 of the deuteron from deep inelastic scattering of 190 GeV polarized muons on polarized deuterons. The results are combined with our previous measurements of gd1. A perturbative QCD evolution in next-to-leading order is used to compute gd1(x) at a constant Q2. At Q2 = 10GeV2, we obtain a first moment Γd1 = ∫10 gd1dx = 0.041 ± 0.008, a flavour-singlet axial charge of the nucleon a0 = 0.30 ± 0.08, and an axial charge of the strange quark as = -0.09 ± 0.03. Using our earlier determination Γp1, we obtain Γp1 - Γn1 = 0.183 ± 0.035 at Q2 - 10GeV2. This result is in agreement with the Bjorken sum rule which predicts Γp1 - Γn1 = 0.186 ± 0.002 at the same Q2. © 1997 Published by Elsevier Science B.V.
Original languageEnglish
Pages (from-to)338-348
Number of pages11
JournalPhysics Letters B
Volume396
Issue number1-4
DOIs
Publication statusPublished - 20 Mar 1997
MoE publication typeA1 Journal article-refereed

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