Determination of the gluon distribution function of the nucleon using energy-energy angular pattern in deep-inelastic muon-deuteron scattering

M. R. Adams, S. Aïd, P. L. Anthony, M. D. Baker, J. Bartlett, A. A. Bhatti, H. M. Braun, W. Busza, T. J. Carroll, J. M. Conrad, G. Coutrakon, R. Davisson, I. Derado, S. K. Dhawan, W. Dougherty, T. Dreyer, K. Dziunikowska, V. Eckardt, U. Ecker, M. ErdmannA. Eskreys, J. Figiel, H. J. Gebauer, D. F. Geesaman, R. Gilman, M. C. Green, J. Haas, C. Halliwell, J. Hanlon, D. Hantke, V. W. Hughes, H. E. Jackson, G. Jancso, D. M. Jansen, S. Kaufman, R. D. Kennedy, T. Kirk, H. G E Kobrak, S. Krzywdzinski, S. Kunori, J. J. Lord, H. J. Lubatti, D. McLeod, S. Magill, P. Malecki, A. Manz, H. Melanson, D. G. Michael, W. Mohr, H. E. Montgomery, J. G. Morfin, R. B. Nickerson, S. O'Day, K. Oikiewicz, L. Osborne, V. Papavassiliou, B. Pawlik, P. M. Pipkin, E. J. Ramberg, A. Röser, J. J. Ryan, C. W. Salgado, A. Salvarani, H. Schellman, M. Schmitt, N. Schmitz, K. P. Schüler, H. J. Seyerlein, A. Skuja, G. A. Snow, S. Söldner-Rembold, P. H. Steinberg, H. E. Stier, P. Stopa, R. A. Swanson, R. Talaga, S. Tentindo-Repond, H. J. Trost, H. Venkataramania, M. Wilhelm, J. Wilkes, Richard Wilson, W. Wittek, S. A. Wolbers, T. Zhao

Research output: Contribution to journalArticlepeer-review

Abstract

We have used the energy-energy angular pattern of hadrons in inelastic muon-deuteron scattering to study perturbative QCD effects and to extract the gluon distribution function ηG(η) of the nucleon, where η is the fractional momentum carried by the gluon. The data were taken with the E665 spectrometer using the Fermilab Tevatron muon beam with a mean beam energy of 490 GeV. We present ηG(η) for 0.005 < η < 0.05 and at an average age Q2 of 8 GeV2 using this new technique. We find that ηG(η) in this region can be described by ηG(η) ∝ηλ with λ = -0.87±0.09(stat.)±0.3.2±(sys.). We compare our results to expectations from various parametrizations of the parton distribution function and also to results from HERA.

Original languageEnglish (US)
Pages (from-to)391-403
Number of pages13
JournalEuropean Physical Journal C
Volume71
Issue number1
StatePublished - 2011

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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