Limits on an additional Z boson from e+e- annihilation data

K. Hagiwara, R. Najima, Makoto Sakuda, N. Terunuma

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We study the possibilities of an extra Z boson expected from E6 grand unified theories by using the most recent e+e- annihilation data up to s =57 GeV. Limits on the mass and mixing angle for the extra Z boson are discussed. We find that the data fit well for an extra Z boson whose mass is in the range 100400 GeV and which has an appreciable vector coupling to charged leptons and down-type quarks. The upper mass bound is marginal such that it disappears at the 2 level even for the most favorable model (Z).

Original languageEnglish
Pages (from-to)815-823
Number of pages9
JournalPhysical Review D
Volume41
Issue number3
DOIs
Publication statusPublished - 1990
Externally publishedYes

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bosons
grand unified theory
leptons
quarks

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Hagiwara, K., Najima, R., Sakuda, M., & Terunuma, N. (1990). Limits on an additional Z boson from e+e- annihilation data. Physical Review D, 41(3), 815-823. https://doi.org/10.1103/PhysRevD.41.815

Limits on an additional Z boson from e+e- annihilation data. / Hagiwara, K.; Najima, R.; Sakuda, Makoto; Terunuma, N.

In: Physical Review D, Vol. 41, No. 3, 1990, p. 815-823.

Research output: Contribution to journalArticle

Hagiwara, K, Najima, R, Sakuda, M & Terunuma, N 1990, 'Limits on an additional Z boson from e+e- annihilation data', Physical Review D, vol. 41, no. 3, pp. 815-823. https://doi.org/10.1103/PhysRevD.41.815
Hagiwara, K. ; Najima, R. ; Sakuda, Makoto ; Terunuma, N. / Limits on an additional Z boson from e+e- annihilation data. In: Physical Review D. 1990 ; Vol. 41, No. 3. pp. 815-823.
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