Published January 1992
| Version v1
Report
Restricted
Search for charm production in direct decays of the Υ(1S) resonance
Creators
- Albrecht, H.1
- Ehrlichmann, H.1
- Hamacher, T.1
- Krueger, A.1
- Nau, A.1
- Nippe, A.1
- Nowak, S.1
- Reidenbach, M.1
- Schaefer, M.1
- Schroeder, H.1
- Schulz, H.D.1
- Walter, M.1
- Wurth, R.1
- Appuhn, R.D.2
- Hast, C.2
- Herrera, G.2
- Kolanoski, H.2
- Lange, A.2
- Lindner, A.2
- Mankel, R.2
- Schieber, M.2
- Siegmund, T.2
- Spaan, B.2
- Thurn, H.2
- Toepfer, D.2
- Walther, A.2
- Wegener, D.2
- Paulini, M.3
- Reim, K.3
- Wegener, H.3
- Mundt, R.4
- Oest, T.4
- Schmidt-Parzefall, W.4
- Funk, W.5
- Stiewe, J.5
- Werner, S.5
- Ehret, K.6
- Hoelscher, A.6
- Hofmann, W.6
- Huepper, A.6
- Khan, S.6
- Knoepfle, K.T.6
- Spengler, J.6
- Britton, D.I.7
- Charlesworth, C.E.K.7
- Edwards, K.W.7
- Hyatt, E.R.F.7
- Kapitza, H.7
- Krieger, P.7
- MacFarlane, D.B.7
- Patel, P.M.7
- Prentice, J.D.7
- Saull, P.R.B.7
- Seidel, S.C.7
- Tzamariudaki, K.7
- Van de Water, R.G.7
- Yoon, T.S.7
- Ressling, D.8
- Schmidtler, M.8
- Schneider, M.8
- Schubert, K.R.8
- Strahl, K.8
- Waldi, R.8
- Weseler, S.8
- Kernel, G.9, 10
- Krizan, P.9, 10
- Kricnic, E.9, 10
- Podobnik, T.9, 10
- Zivko, T.9, 10
- Cronstroem, H.I.11
- Joensson, L.11
- Balagura, V.12
- Belyaev, I.12
- Danilov, M.12
- Droutskoy, A.12
- Golutvin, A.12
- Gorelov, I.12
- Kostina, G.12
- Lubimov, V.12
- Murat, P.12
- Pakhlov, P.12
- Ratnikov, F.12
- Semenov, S.12
- Shibaev, V.12
- Soloshenko, V.12
- Tichomirov, I.12
- Zaitsev, Yu.12
- ARGUS Collaboration
- 1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- 2. Dortmund Univ. (Germany). Inst. fuer Physik
- 3. Erlangen-Nuernberg Univ., Erlangen (Germany). Physikalisches Inst.
- 4. Hamburg Univ. (Germany). 2. Inst. fuer Experimentalphysik
- 5. Heidelberg Univ. (Germany). Inst. fuer Hochenergiephysik
- 6. Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)
- 7. Institute of Particle Physics (Canada)
- 8. Karlsruhe Univ. (T.H.) (Germany). Inst. fuer Experimentelle Kernphysik
- 9. Lubljana Univ. (Slovenia). Oddelek za Fiziko
- 10. Lubljana Univ. (Slovenia). Inst. J. Stefan
- 11. Lund Univ. (Sweden). Dept. of Physics
- 12. Institute of Theoretical and Experimental Physics, Moscow (Russia)
Description
The production of D*(2010)+ and J/ψ mesons and of prompt leptons has been investigated in e+e- interactions at the Υ(1S) resonance energy. The data were collected at the storage ring DORIS II at DESY with the ARGUS detector. We obtain upper limits of BRdir(Υ(1S)→D*(2010)±+X)<0.019 (for χp>0.2) and BRdir(Υ(1S)→J/ψ+X)<0.68x10-3, both at the 90% confidence level. From the prompt lepton analysis, a model dependent limit of BRdir(Υ(1S)→Yc+X)<0.034 (Yc denoting a charm-containing particle) is derived. (orig.)
Availability note (English)
MF available from INIS under the Report Number.
Files
Restricted
The record is publicly accessible, but files are restricted to users with access.
Additional details
Publishing Information
- Imprint Pagination
- 17 p.
- Report number
- DESY--92-008
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 23050747
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANNIHILATION; BRANCHING RATIO; D NEUTRAL MESONS; D*-2010 MESONS; EFFECTIVE MASS; ELECTRON SPECTRA; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; EXPERIMENTAL DATA; GEV RANGE 01-10; HADRONIC PARTICLE DECAY; INCLUSIVE INTERACTIONS; J PSI-3097 MESONS; KAONS MINUS; KAONS NEUTRAL SHORT-LIVED; LEPTONIC DECAY; LIMITING VALUES; MASS SPECTRA; MUON PAIRS; MUONS MINUS; MUONS PLUS; PAIR PRODUCTION; PIONS MINUS; PIONS PLUS; POSITRONS; UPSILON-9460 MESONS; WEAK HADRONIC DECAY
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; BOTTOMONIUM; CHARM PARTICLES; CHARMED MESONS; CHARMONIUM; D MESONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; KAONS; KAONS NEUTRAL; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASS; MATTER; MESONS; MUONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PIONS; PSEUDOSCALAR MESONS; QUARKONIUM; SPECTRA; STRANGE MESONS; STRANGE PARTICLES; VECTOR MESONS; WEAK INTERACTIONS; WEAK PARTICLE DECAY
Optional Information
- Contract/Grant/Project number
- Contract BMFT 054DO51P; BMFT 054ER12P; BMFT 055HD21P; BMFT 054KA17P
- Collaborations
- ARGUS Collaboration.