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.
|Number of pages||3|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - 1986|