Search for long-lived neutral bosons in orthopositronium decay

S. Asai, S. Orito, Koji Yoshimura, T. Haga

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We have searched for orthoposition decay into plus a feebly interacting boson X0, by looking for a narrow peak in the energy spectrum of single taken under the condition of no additional detected in a hermetic photon detector. No evidence of such decay is observed, resulting in a new upper limit on the branching ratio of 1.1×10-6, which is a factor of 60 more stringent than previous limits in the mx region below 30 keV. This experiment rules out the existence of light (mX

Original languageEnglish
Pages (from-to)2440-2443
Number of pages4
JournalPhysical Review Letters
Volume66
Issue number19
DOIs
Publication statusPublished - 1991
Externally publishedYes

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bosons
decay
energy spectra
detectors
photons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Search for long-lived neutral bosons in orthopositronium decay. / Asai, S.; Orito, S.; Yoshimura, Koji; Haga, T.

In: Physical Review Letters, Vol. 66, No. 19, 1991, p. 2440-2443.

Research output: Contribution to journalArticle

Asai, S. ; Orito, S. ; Yoshimura, Koji ; Haga, T. / Search for long-lived neutral bosons in orthopositronium decay. In: Physical Review Letters. 1991 ; Vol. 66, No. 19. pp. 2440-2443.
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