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Spin structure of the proton from polarized inclusive deep-inelastic muon-proton scattering

  • D. Adams
  • , B. Adeva
  • , E. Arik
  • , A. Arvidson
  • , B. Badelek
  • , M. K. Ballintijn
  • , 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, G. Gracia, 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, 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, T. Layda, 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, T. O. Niinikoski, J. E.J. Oberski, A. Ogawa, C. Ozben, D. P. Parks
  • Aalto University
  • National Centre for Nuclear Research (NCBJ)
  • Johannes Gutenberg University Mainz
  • Ludwig Maximilian University of Munich (LMU)
  • Northeastern University
  • University of Santiago de Compostela
  • University of California System
  • University of Freiburg
  • Istanbul Technical University
  • University of Virginia
  • European Organization for Nuclear Research (CERN)
  • Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA)
  • University of Trieste (UNITS)
  • Bielefeld University
  • Northwestern University
  • Delft University of Technology
  • University of Houston
  • Tel Aviv University
  • Yale University
  • Rice University
  • Joint Institute for Nuclear Research
  • Uppsala University
  • Nagoya University
  • Helsinki University of Technology

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We have measured the spin-dependent structure function [Formula presented] in inclusive deep-inelastic scattering of polarized muons off polarized protons, in the kinematic range [Formula presented] and [Formula presented] A next-to-leading order QCD analysis is used to evolve the measured [Formula presented] to a fixed [Formula presented] The first moment of [Formula presented] at [Formula presented] is [Formula presented] (stat) [Formula presented] (syst) [Formula presented] (evol). This result is below the prediction of the Ellis-Jaffe sum rule by more than two standard deviations. The singlet axial charge [Formula presented] is found to be [Formula presented] In the Adler-Bardeen factorization scheme, [Formula presented] is required to bring ΔΣ in agreement with the quark-parton model. A combined analysis of all available proton, deuteron, and [Formula presented] data confirms the Bjorken sum rule. © 1997 The American Physical Society.
Original languageEnglish
Pages (from-to)5330-5358
Number of pages29
JournalPhysical Review D: Particles, Fields, Gravitation and Cosmology
Volume56
Issue number9
DOIs
Publication statusPublished - 1 Jan 1997
MoE publication typeA1 Journal article-refereed

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