Title

Υ(1S)→γ+noninteracting particles

Document Type

Article

Publication Date

1-1-1995

Abstract

We consider the decay of Υ(1S) particles produced at CESR into a photon which is observed by the CLEO detector plus particles which are not seen. These could be real particles which fall outside of our acceptance, or particles which are noninteracting. We report the results of our search fo the process Υ(1S)→γ+''unseen'' for photon energies >1 GeV, obtaining limits for the case where ''unseen'' is either a single particle or a particle-antiparticle pair. Our upper limits represent the highest sensitivity measurements for such decays to date. © 1995 The American Physical Society.

Publication Name

Physical Review D

Volume Number

51

First Page

2053

Last Page

2060

Issue Number

5

DOI

10.1103/PhysRevD.51.2053

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