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Coherent pion production in neutrino and antineutrino interactions on nuclei of heavy freon molecules

  • SKAT-Collaboration
  • H. -J. Grabosch
  • H. H. Kaufmann
  • U. Krecker
  • R. Nahnhauer
  • S. Nowak
  • S. Schlenstedt
  • H. Vogt
  • E. P. Kuznetsov
  • V. V. Ammosov
  • D. S. Baranov
  • V. I. Ermolaev
  • A. A. Ivanilov
  • P. V. Ivanov
  • V. I. Konyushko
  • V. M. Korablev
  • V. A. Korotkov
  • V. A. Krupnov
  • V. V. Makeev
  • A. G. Myagkov
  • A. Yu. Polyarush
  • A. A. Sokolov
Article

Abstract

Studying the coherent diffractive production of pions in neutrino and antineutrino scattering off the nuclei of freon molecules we have observed for the first time in one experiment all three states of the isospin triplet of the axial part of the weak charged and neutral currents. For the corresponding cross sections we derive
$$\begin{array}{*{20}c} {\sigma _{coh}^v (\pi ^ + ) = (106 \pm 16) \cdot 10^{ - 40} {{cm^2 } \mathord{\left/ {\vphantom {{cm^2 } {\left\langle {nucl.} \right\rangle }}} \right. \kern-\nulldelimiterspace} {\left\langle {nucl.} \right\rangle }}} \\ {\sigma _{coh}^{\bar v} (\pi ^ - ) = (113 \pm 35) \cdot 10^{ - 40} {{cm^2 } \mathord{\left/ {\vphantom {{cm^2 } {\left\langle {nucl.} \right\rangle }}} \right. \kern-\nulldelimiterspace} {\left\langle {nucl.} \right\rangle }}and} \\ {\sigma _{coh}^v (\pi ^0 ) = (52 \pm 19) \cdot 10^{ - 40} {{cm^2 } \mathord{\left/ {\vphantom {{cm^2 } {\left\langle {nucl.} \right\rangle }}} \right. \kern-\nulldelimiterspace} {\left\langle {nucl.} \right\rangle }}} \\ \end{array} $$
.

Comparing our data with theoretical predictions based on the standard model of weak interactions we find reasonable agreement. Independently from any model of coherent pion production we determine the isovector axial vector coupling constant to be |β|=0.99±0.20.

Keywords

Field Theory Elementary Particle Quantum Field Theory Theoretical Prediction Weak Interaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • SKAT-Collaboration
  • H. -J. Grabosch
    • 1
  • H. H. Kaufmann
    • 1
  • U. Krecker
    • 1
  • R. Nahnhauer
    • 1
  • S. Nowak
    • 1
  • S. Schlenstedt
    • 1
  • H. Vogt
    • 1
  • E. P. Kuznetsov
    • 2
  • V. V. Ammosov
    • 3
  • D. S. Baranov
    • 3
  • V. I. Ermolaev
    • 3
  • A. A. Ivanilov
    • 3
  • P. V. Ivanov
    • 3
  • V. I. Konyushko
    • 3
  • V. M. Korablev
    • 3
  • V. A. Korotkov
    • 3
  • V. A. Krupnov
    • 3
  • V. V. Makeev
    • 3
  • A. G. Myagkov
    • 3
  • A. Yu. Polyarush
    • 3
  • A. A. Sokolov
    • 3
  1. 1.Institute for High Energy Physics of the Academy of ScienceBerlin-ZeuthenGerman Democratic Republic
  2. 2.Lebedev Institute for Physics of the Academy of ScienceMoscowUSSR
  3. 3.Institute for High Energy PhysicsSerpukhovUSSR

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