[Upsilon](1[ital S])[r arrow][gamma]+noninteracting particles

Journal Article · Wed Mar 01 00:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.2053· OSTI ID:6579531

Balest, R; Cho, K; Ford, T; Johnson, D R; Lingel, K; Lohner, M; Rankin, P; Smith, J G; Alexander, J P; Bebek, C; Berkelman, K; Bloom, K; Browder, T E; Cassel, D G; Cho, H A; Coffman, D M; Crowcroft, D S; Drell, P S; Dumas, D; Ehrlich, R ; Gaidarev, P; Galik, R S; Garcia-Sciveres, M; Geiser, B; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Henderson, S; Jones, C D; Jones, S L; Kandaswamy, J; Katayama, N; Kim, P C; Kreinick, D L; Ludwig, G S; Masui, J; Mevissen, J; Mistry, N B; Ng, C R; Nordberg, E; Patterson, J R; Peterson, D; Riley, D; Salman, S; Sapper, M; Wuerthwein, F; Urish, M M; Avery, P; Freyberger, A; Rodriguez, J; Yang, S; Yelton, J; Cinabro, D; Liu, T; Saulnier, M; Wilson, R; Yamamoto, H; Bergfeld, T; Eisenstein, B I; Gollin, G; Ong, B; Palmer, M; Selen, M; Thaler, J J; Edwards, K W; Ogg, M; Bellerive, A; Britton, D I; Hyatt, E R.F.; MacFarlane, D B; Patel, P M; Spaan, B; Sadoff, A J; Ammar, R; Ba,

We consider the decay of [Upsilon](1[ital S]) 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 [Upsilon](1[ital S])[r arrow][gamma]+ unseen'' for photon energies [gt]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.

• OSTI ID: 6579531
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 51:5; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
UPSILON-9460 MESONS
GAMMA DECAY
ANTIPARTICLES
PARTICLES
PHOTONS
SENSITIVITY
ANTIMATTER
BOSONS
BOTTOMONIUM
DECAY
ELEMENTARY PARTICLES
HADRONS
MASSLESS PARTICLES
MATTER
MESONS
NUCLEAR DECAY
QUARKONIUM
VECTOR MESONS
662390* - Electromagnetic Processes & Properties- (1992-)
662420 - Properties of Mesons & Meson Resonances- (1992-)
662440 - Properties of Other Particles Including Hypothetical Particles- (1992-)