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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, A. Penzo, 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, A. Rosado, I. Sabo, J. Saborido, A. Sandacz, I. Savin, P. Schiavon, K. P. Schüler, R. Segel, R. Seitz, Y. Semertzidis, F. Sever, P. Shanahan, E. P. Sichtermann, F. Simeoni, G. I. Smirnov, A. Staude, A. Steinmetz, U. Stiegler, H. Stuhrmann, M. Szleper, K. M. Teichert, F. Tessarotto, W. Tlaczala, S. Trentalange, G. Unel, M. Velasco, J. Vogt, R. Voss, R. Weinstein, C. Whitten, R. Windmolders, R. Willumeit, W. Wislicki, A. Witzmann, A. M. Zanetti, K. Zaremba, J. Zhao
  • Rice University
  • University of Santiago de Compostela
  • Istanbul Technical University
  • Uppsala University
  • University of Warsaw
  • Delft University of Technology
  • CEA Saclay
  • Bielefeld University
  • Aalto University
  • Ludwig Maximilian University of Munich
  • University of Trieste
  • Yale University
  • Johannes Gutenberg University Mainz
  • University of Virginia
  • University of California at Los Angeles
  • Northwestern University
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  • Northeastern University
  • Nagoya University
  • CERN
  • Joint Institute for Nuclear Research
  • University of Freiburg
  • Tel Aviv University
  • Helmholtz-Zentrum Hereon
  • Universite de Mons

Research output: Contribution to journalArticlepeer-review

316 Scopus citations

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.

Original languageEnglish
Pages (from-to)5330-5358
Number of pages29
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume56
Issue number9
DOIs
StatePublished - 1997

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