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

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 sea...

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Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 1995-03, Vol.51:5
Hauptverfasser:	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
Format:	Artikel
Sprache:	eng
Schlagworte:	662420 > Properties of Mesons & Meson Resonances-- (1992-) 662440 > Properties of Other Particles Including Hypothetical Particles-- (1992-) ANTIMATTER ANTIPARTICLES BOSONS BOTTOMONIUM DECAY ELEMENTARY PARTICLES GAMMA DECAY HADRONS MASSLESS PARTICLES MATTER MESONS NUCLEAR DECAY PARTICLES PHOTONS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS QUARKONIUM SENSITIVITY UPSILON-9460 MESONS VECTOR MESONS 662390 > Electromagnetic Processes & Properties-- (1992-)
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Zusammenfassung:	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.
ISSN:	0556-2821 1089-4918
DOI:	10.1103/PhysRevD.51.2053