We present the results of a search for monoenergetic photons from the process (1S)+X. Upper limits at 90% confidence level for the branching ratio B((1S)+X) range from 0.1% to 1.4% for photon energies between 150 and 2000 MeV.
|頁（從 - 到）||300-302|
|期刊||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|出版狀態||已出版 - 1986|