Contribution to ${\epsilon }^{\prime }/\epsilon$ from anomalous gauge couplings

Abstract

Recently KTev collaboration has measured $Re({\epsilon }^{\prime }/\epsilon )=(28\pm 4.1)\times 10^{-4}$ which is in agreement with early measurement from NA31. The Standard Model prediction for ${\epsilon }^{\prime }/\epsilon$ is on the lower end of the experimentally allowed range depending on models for hadronic matrix elements. In this paper we study the contributions from anomalous gauge couplings. We find that the contributions from anomalous couplings can be significant and can ehance ${\epsilon }^{\prime }/\epsilon$ to have a value closer to data.

A typo in eq. 6, and numerical errors in eqs. 8 and 12 corrected. Anomalous gauge couplings can enhance e'/e by a factor as large as 2.5

References in corpus (3)

• ${\epsilon }^{\prime }/\epsilon$ at $O(p^4)$ in the Chiral Expansion
• ${\epsilon }^{\prime }/\epsilon$: three years later
• Study of the ZZγand ZγγCouplings in Z(νν)γProduction

Cited by in corpus (12)

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• Standard Model Confronting New Results for epsilon'/epsilon
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• CP Violation in Hyperon Decays from Supersymmetry
• Large Delta(I)=3/2 Contribution to epsilon'/epsilon in Supersymmetry
• Gluino-squark contributions to CP violations in the kaon system
• Constraints on the Mass and Mixing of the 4th Generation Quark From Direct CP Violation${\epsilon }^{\prime }/\epsilon$ and Rare K Decays
• Reanalysis of CP Violation in K_L -> pi^+ pi^- gamma
• Enhancement of epsilon'/epsilon in the SU(2)_L times SU(2)_R times U(1) model
• Chargino contributions to ${\epsilon }^{\prime }/\epsilon$ in the left-right supersymmetric model
• The impact of LEP 2 data on possible anomalous enhancements of Re e'/e