Physics of Atomic Nuclei

, Volume 64, Issue 9, pp 1643–1656

Anomalous three-boson coupling constants in the single production of W bosons at a future e+e linear collider

  • V. V. Braguta
  • A. A. Likhoded
  • A. E. Chalov
Elementary Particles and Fields Theory
  • 22 Downloads

Abstract

The question of whether constraints on the anomalous parameters of WWγ and WWZ three-boson interactions can be deduced from an analysis of data on the reaction e+eWe+ν that are expected to come from a future \(\sqrt s = 500 - GeVe^ + e^ - \) linear collider of integrated luminosity of L=50, 100, or 500 fb is discussed. An analysis of relevant differential distributionns reveals that, in contrast to pair W-boson production, the reaction mentioned immediately above is highly sensitive to the parameter λZ and that the resulting constraints can be viewed as those that supplement the constraints that follow from data on e+eW+W. For the experiment being discussed, two possible implementations of a detector are considered that correspond to the kinematical regions |cos \(\left| {\cos \theta _{e^ + } } \right| \leqslant \cos 7^\circ \) and \(\left| {\cos \theta _{e^ + } } \right| \leqslant \cos 1.5^\circ \). It is indicated that the region of small positron-scattering angles is of importance for improving the sensitivity of the process. In setting constraints on the anomalous parameters, the SEWS scenario for anomalous boson coupling constants, where interactions responsible for electroweak-symmetry breaking are strongly coupled, is examined along with the case of the most general parametrization of the WWγ(Z) three-boson vertices.

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Copyright information

© MAIK "Nauka/Interperiodica" 2001

Authors and Affiliations

  • V. V. Braguta
    • 1
  • A. A. Likhoded
    • 2
  • A. E. Chalov
    • 1
  1. 1.Moscow Institute for Physics and TechnologyDolgoprudnyi, Moscow oblastRussia
  2. 2.Institute for High Energy PhysicsMoscow oblastRussia

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