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  • Milestone

Final report of the E821 muon anomalous magnetic moment measurement at BNL

G. W. Bennett2, B. Bousquet10, H. N. Brown2, G. Bunce2, R. M. Carey1, P. Cushman10, G. T. Danby2, P. T. Debevec8, M. Deile13 et al. (Muon g-2 Collaboration)

M. Deile13, H. Deng13, W. Deninger8, S. K. Dhawan13, V. P. Druzhinin3, L. Duong10, E. Efstathiadis1, F. J. M. Farley13, G. V. Fedotovich3, S. Giron10, F. E. Gray8, D. Grigoriev3, M. Grosse-Perdekamp13, A. Grossmann7, M. F. Hare1, D. W. Hertzog8, X. Huang1, V. W. Hughes13,*, M. Iwasaki12, K. Jungmann6,7, D. Kawall13, M. Kawamura12, B. I. Khazin3, J. Kindem10, F. Krienen1, I. Kronkvist10, A. Lam1, R. Larsen2, Y. Y. Lee2, I. Logashenko1,3, R. McNabb10,8, W. Meng2, J. Mi2, J. P. Miller1, Y. Mizumachi11, W. M. Morse2, D. Nikas2, C. J. G. Onderwater8,6, Y. Orlov4, C. S. Özben2,8, J. M. Paley1, Q. Peng1, C. C. Polly8, J. Pretz13, R. Prigl2, G. zu Putlitz7, T. Qian10, S. I. Redin3,13, O. Rind1, B. L. Roberts1, N. Ryskulov3, S. Sedykh8, Y. K. Semertzidis2, P. Shagin10, Yu. M. Shatunov3, E. P. Sichtermann13, E. Solodov3, M. Sossong8, A. Steinmetz13, L. R. Sulak1, C. Timmermans10, A. Trofimov1, D. Urner8, P. von Walter7, D. Warburton2, D. Winn5, A. Yamamoto9, and D. Zimmerman10 (Muon g-2 Collaboration)

  • 1Department of Physics, Boston University, Boston, Massachusetts 02215, USA
  • 2Brookhaven National Laboratory, Upton, New York 11973, USA
  • 3Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
  • 4Newman Laboratory, Cornell University, Ithaca, New York 14853, USA
  • 5Fairfield University, Fairfield, Connecticut 06430, USA
  • 6Kernfysisch Versneller Instituut, Rijksuniversiteit Groningen, NL-9747 AA, Groningen, The Netherlands
  • 7Physikalisches Institut der Universität Heidelberg, 69120 Heidelberg, Germany
  • 8Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
  • 9KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
  • 10Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 11Science University of Tokyo, Tokyo, 153-8902, Japan
  • 12Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
  • 13Department of Physics, Yale University, New Haven, Connecticut 06520, USA

  • *Deceased.
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Phys. Rev. D 73, 072003 – Published 7 April, 2006

DOI: https://doi.org/10.1103/PhysRevD.73.072003

Abstract

We present the final report from a series of precision measurements of the muon anomalous magnetic moment, aμ=(g−2)/2. The details of the experimental method, apparatus, data taking, and analysis are summarized. Data obtained at Brookhaven National Laboratory, using nearly equal samples of positive and negative muons, were used to deduce aμ(Expt)=11659208.0(5.4)(3.3)×10−10, where the statistical and systematic uncertainties are given, respectively. The combined uncertainty of 0.54 ppm represents a 14-fold improvement compared to previous measurements at CERN. The standard model value for aμ includes contributions from virtual QED, weak, and hadronic processes. While the QED processes account for most of the anomaly, the largest theoretical uncertainty, ≈0.55  ppm, is associated with first-order hadronic vacuum polarization. Present standard model evaluations, based on e+e− hadronic cross sections, lie 2.2–2.7 standard deviations below the experimental result.

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Physical Review D 50th Anniversary Milestones

This collection of seminal papers from PRD highlights research that remains central to developments today in particle physics, quantum field and string theory, gravitation, cosmology, and particle astrophysics.

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Phys. Rev. D 73, 072003– Published 7 April, 2006
  • Received 26 January 2006

© 2006 American Physical Society

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