CP violating anomalous couplings at a 500 GeV e+e- linear collider

A. Likhoded, G. Valencia, O. P. Yushchenko

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

We study the sensitivity of a 500 GeV e+e- linear collider to CP violating anomalous couplings. We find that with 50 fb-1, and taking only one non-zero coupling at a time, the process e+e- → W+W- can be used to place the 95% confidence level bounds |κ̃γ|≤0.1, |κ̃Z|≤0.1 and |gZ 4|≤0.1 from CP even observables. By studying certain distributions in the process e+e-→μ+μ-νν̄ one of the bounds can be improved to |gZ 4| ≤0.06. This process also allows the construction of a CP odd observable which can be used to place bounds on CP violating new physics. At the 95% confidence level we find |κ̃γ|≤0.3, |κ̃Z|≤0.2 and a much weaker bound for |gZ 4|.

Original languageEnglish
Pages (from-to)2974-2982
Number of pages9
JournalPhysical Review D
Volume57
Issue number5
Publication statusPublished - 1 Mar 1998
Externally publishedYes

Cite this