Evidence for Color-Excitation in Deep-Inelastic Charged-Current Neutrino-Nucleon Scattering

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概要

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• Aiming at a search for possible color-excitation, deep-inelastic neutrino-nucleon scattering, ν_μ(ν^^-_μ)+N→μ^<mnplus>+X, is analysed with a weak interaction model incorporating a color-changing current in addition to the standard GIM current. Various quantities of experimental interest are evaluated as functions of incident neutrino energy E and compared with the latest CDHS, BEBC and CIFR data as well as the lower-energy GGM data. Negative scaling violation is taken into account by a propagator-like parametrization. It is shown that (i) these neutrino data do not exclude a weak-boson of mass as low as 〜15 GeV ; (ii) there is, particularly in the BEBC and CIFR data, some evidence in favor of positive scaling violation which indicates onset of new production channel (s) ; and (iii) the color-excitation with threshold at m_X 〜10 GeV is one probable explanation of the latter behavior.

• 1978-10-25

著者

• Tsai S.y.

  Atomic Energy Reseach Institute College Of Science And Technology Nihon University

• Tsai S.

  Atomic Energy Research Institute And Department Of Physics College Of Science And Technology Nihon U

• Somekawa Yoshimasa

  Atomic Energy Research Institute College Of Science And Technology Nihon University

• TSAI S.

  Atomic Energy Research Institute and Department of Physics College of Science and Technology, Nihon University

• TSAI S.

  Atomic Energy Research Institute, College of Science and Technology, Nihon University

関連論文

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