21 results on '"V. Kadansky"'
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2. RHO-RHO production by two photon scattering
- Author
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P. Schmüser, H. M. Fischer, J. Rimkus, V. Kadansky, D. Notz, H. U. Martyn, R. Rüsch, J. Pyrlik, H. L. Lynch, Gl Salmon, B. Löhr, P. Joos, B. Foster, A. Schultz von Dratzig, Walter Dr. Hillen, H. Hartmann, T. Meyer, John Freeman, M. Ogg, Georg Zobernig, G. Peise, H. Boerner, M. Wollstadt, K. W. Bell, R. Riethmüller, A. Ladage, Rj Cashmore, U. Karshon, H. Hultschig, W. G. Jones, J. Proudfoot, P. Koehler, S. Yarker, John Illingworth, P. Mättig, D. G. Cassel, W. Koch, B. H. Wiik, John Hart, P. L. Woodworth, N. A. Downie, R. Wedemeyer, Norbert Wermes, G. Poelz, Sau Lan Wu, T. R. Wyatt, H. G. Sander, B. Roe, H. Kowalski, D. R. Quarrie, U. Kötz, K. Lübelsmeyer, D. A. Garbutt, P. Söding, R.C.E. Devenish, P. Grossmann, D. M. Binnie, E. Hilger, D. Pandoulas, M. Holder, K. Gather, H. Burkhardt, P. Lecomte, R. Brandelik, D. Revel, Gy. Wolf, Y. Eisenberg, E.E. Ronat, W. Braunschweig, D. Lüke, G. Knop, G. Mikenberg, D. Heyland, D.W. Schmitz, P. J. Dornan, R. Fohrmann, P. Leu, Ehud Duchovni, D. H. Saxon, O. Römer, Stephen Lloyd, A. Shapira, D. Trines, W. Wallraff, Hermann Kolanoski, J. K. Sedgbeer, C. Youngman, L. Koepke, Roger Barlow, M. Schliwa, and I. C. Brock
- Subjects
Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Two-photon excitation microscopy ,Scattering ,Electron–positron annihilation - Published
- 1980
- Full Text
- View/download PDF
3. Forward photoproduction of neutral pions on polarized protons in the third resonance region
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H. Schilling, T. Yamaki, W. Meyer, H. Herr, V. Kadansky, B. Löhr, W. Jansen, and D. Husmann
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Cryostat ,Physics ,Nuclear and High Energy Physics ,Photon ,Meson ,Resonance ,Electron ,Synchrotron ,law.invention ,Nuclear physics ,Pion ,law ,High Energy Physics::Experiment ,Atomic physics ,Nuclear Experiment ,Absorption (electromagnetic radiation) - Abstract
Angular distributions of the target symmetry for the reaction γ + p → π0 + p have been measured at the Bonn 2.5 GeV Electron Synchrotron at pion c.m. angles between 13° and 63° and photon energies of 1.0 and 1.1 GeV. The π0 mesons were detected by their two decay photons with total absorption lead-glass Cerenkov counters. Butanol was used as target material in a continuous flow 3He cryostat operating at 0.5 K and 25 kG. The π0 counting rate from free protons in the butanol target was derived from the measurements of the differential cross section on hydrogen. The data are compared with data of other laboratories and the results of two recent partial-wave analyses.
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- 1977
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4. The Liquid-Argon-Endcap-Shower-Detector for TASSO
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J. Rimkus, G. Peise, F J Kirschfink, W Wallraff, K Lübelsmeyer, and V Kadansky
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Physics ,Photon ,Physics::Instrumentation and Detectors ,business.industry ,Astrophysics::High Energy Astrophysical Phenomena ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Electron ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Optics ,Physics::Plasma Physics ,Liquid argon ,High Energy Physics::Experiment ,business ,Mathematical Physics - Abstract
Forward going electrons and photons can be detected with the segmented liquid-argon-shower-detector built for the TASSO e+e--annihilation-detector at PETRA. In this communication a short description of the endcap-shower-detector will be given. Results obtained with an electron testbeam will be presented.
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- 1981
- Full Text
- View/download PDF
5. Angular distribution of the target asymmetry on polarized protons for the reaction γp↑ → π+n at a photon energy of 700 MeV
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V. Kadansky, K. Königsmann, O. Kaul, G. Lenzen, R. Conrad, T. Miczaika, M. Gies, W. Meyer, K.H. Althoff, D. Menze, and H. Herr
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Physics ,Nuclear and High Energy Physics ,media_common.quotation_subject ,Nuclear Theory ,Electron ,Photon energy ,Asymmetry ,Synchrotron ,law.invention ,Nuclear physics ,Cross section (physics) ,Angular distribution ,Pion ,law ,Magnet ,High Energy Physics::Experiment ,Atomic physics ,Nuclear Experiment ,media_common - Abstract
At the Bonn 2.5 GeV electron synchrotron the angular distribution of the target asymmetry T = (σ↑ − σ↓) (σ↑ + σ↓) for the reaction γp↑ → π+n was measured at a mean photon energy of 700 MeV and pion CM-angles from 50° to 155°. The combination of a 3He-cryostat, polarizing the free protons in the target up to 65%, with a large acceptance magnet for pion detection led to statistical errors of the target asymmetry comparable with those of cross section measurements.
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- 1976
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6. Photoproduction of K+Λ0 on polarized protons
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O. Kaul, W. J. Schwille, D. Wolf, M. Gies, E. Hilger, V. Kadansky, D. Menze, T. Miczaika, K. Königsmann, H. Herr, W. Meyer, and K.H. Althoff
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Physics ,Nuclear and High Energy Physics ,Photon ,Spectrometer ,media_common.quotation_subject ,Nuclear Theory ,Large aperture ,Asymmetry ,Synchrotron ,law.invention ,Nuclear physics ,law ,High Energy Physics::Experiment ,Atomic physics ,Nuclear Experiment ,media_common - Abstract
The target asymmetry for the reaction γp → K+Λ0 was measured at the Bonn 2.5 GeV synchroton. Data were taken at a fixed kaon c.m. angle of 90° and at photon energies between 1.1 and 1.3 GeV. The kaons were detected in a large aperture magnetic spectrometer.
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- 1978
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7. Photoproduction of negative pions on polarized neutrons in the region of the second resonance
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H. Herr, H. Schüller, M. Gies, V. Kadansky, D. Menze, K.H. Althoff, W. Meyer, K. Königsmann, T. Miczaika, W. J. Schwille, T. Yamaki, O. Kaul, G. Lenzen, and R. Conrad
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Physics ,Nuclear and High Energy Physics ,Spectrometer ,media_common.quotation_subject ,Nuclear Theory ,Resonance ,Large aperture ,Photon energy ,Asymmetry ,Synchrotron ,law.invention ,Nuclear physics ,Pion ,law ,High Energy Physics::Experiment ,Neutron ,Nuclear Experiment ,media_common - Abstract
A polarized neutron target was used at the Bonn 2.5 GeV Synchrotron to measure the target asymmetry for the reaction γ n↑→ π − p at a fixed photon energy of 700 MeV and pion c.m. angles between 50° and 140°. The pions were detected in a large aperture magnetic spectrometer. The data show a structure which is quite different from the distribution previously measured for the reaction γ p↑→ π + n.
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- 1976
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8. Photoproduction of negative pions on a polarized neutron target in the resonance region
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W. Meyer, D. Menze, O. Kaul, E. Hilger, K.H. Althoff, V. Kadansky, H. Herr, H. Beckschulze, J. DeWire, and R. Conrad
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Physics ,Nuclear and High Energy Physics ,Photon ,media_common.quotation_subject ,Nuclear Theory ,Electron ,Asymmetry ,Synchrotron ,law.invention ,Nuclear physics ,Pion ,Deuterium ,law ,Isospin ,High Energy Physics::Experiment ,Neutron ,Nuclear Experiment ,media_common - Abstract
At the Bonn 2.5 GeV electron synchrotron the first measurements of the target asymmetry for the reaction γ + n ↑ → π − + p have been performed. The negative pions were detected in a magnetic spectrometer at a constant pion c.m. angle of 40° and photon energies between 0.45 GeV and 2.0 GeV. Deuterated butanol was used as target material. The polarization of the deuterons was about 16%. The results show a significant difference from the previously measured π + asymmetry.
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- 1975
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9. Evidence for a spin-1 gluon in three-jet events
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T. R. Wyatt, U. Kötz, John Freeman, M. Ogg, D. G. Cassel, B. Löhr, P. Joos, B. Foster, D. A. Garbutt, Walter Dr. Hillen, E. Wicklund, P. Mättig, G. Peise, Ehud Duchovni, H. Boerner, H. Hultschig, J. Pyrlik, Rj Cashmore, C. Youngman, D. Trines, T. Barklow, H. G. Sander, P. Lecomte, B. H. Wiik, John Hart, E. Hilger, Sau Lan Wu, D. R. Quarrie, S. Yarker, W. Wallraff, Hermann Kolanoski, J. K. Sedgbeer, H. M. Fischer, O. Römer, U. Karshon, M. Wollstadt, R. Brandelik, D. M. Binnie, J. Proudfoot, H. L. Lynch, M. A. Downie, V. Kadansky, A. Schultz von Dratzig, E.E. Ronat, P. Koehler, D. Notz, A. Shapira, L. Koepke, D. Pandoulas, Georg Zobernig, G. Knop, W. Koch, Norbert Wermes, H. Kowalski, I. C. Brock, K. Lübelsmeyer, R. A. Stern, P. Söding, M. Holder, R. Rüsch, K. Gather, Y. Eisenberg, G. Poelz, G. Rudolph, R. Riethmüller, K. W. Bell, W. Braunschweig, D. Lüke, D. H. Saxon, R.C.E. Devenish, Gy. Wolf, R. Wedemeyer, F. J. Kirschfink, G. Mikenberg, P. Schmüser, J. Rimkus, P. Grossmann, Stephen Lloyd, H. Hartmann, H. Burkhardt, B. Roe, W. G. Jones, I. Al-Agil, John Illingworth, P. Leu, P. L. Woodworth, Roger Barlow, M. Schliwa, D. Heyland, D.W. Schmitz, D. Revel, Gl Salmon, T. Meyer, P. J. Dornan, A. Ladage, R. Fohrmann, and H. U. Martyn
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Physics ,Nuclear physics ,Nuclear and High Energy Physics ,Particle physics ,Electron–positron annihilation ,High Energy Physics::Phenomenology ,Hadron ,High Energy Physics::Experiment ,Kinematics ,Nuclear Experiment ,Confidence interval ,Standard deviation ,Gluon - Abstract
High-energy e+e--annihilation events obtained in the TASSO detector at PETRA have been used to determine the spin of the gluon in the reaction e+e- → qqg. We analysed angular correlations between the three jet axes. While vector gluons are consistent with the data (55% confidence limit), scalar gluons are disfavoured by 3.8 standard deviations, corresponding to a confidence level of about 10-4. Our conclusion is free of possible biases due to uncertainties in the fragmentation process or in determining the qqg kinematics from the observed hadrons. © 1980.
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- 1980
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10. Energy scan for narrow states in e+e− annihilation at C.M. energies between 29.90 and 31.46 GeV
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J. Ringel, P. Schmüser, Gl Salmon, E.E. Ronat, W. Wallraff, M. Wollstadt, D. Pandoulas, T. Meyer, G. Knop, W. G. Jones, John Illingworth, A. Ladage, V. Kadansky, H. L. Lynch, P. L. Woodworth, A. Schultz von Dratzig, John Freeman, J. Rimkus, M. Ogg, K. W. Bell, H. Kowalski, W. Koch, R. Rüsch, C. Youngman, U. Karshon, H. M. Fischer, R. Riethmüller, H. Boerner, G. Poelz, N. A. Downie, Rj Cashmore, H. Hultschig, B. H. Wiik, John Hart, W. Chinowsky, D. M. Binnie, J. Proudfoot, Sau Lan Wu, Georg Zobernig, S. Yanker, P. Leu, Gy. Wolf, D. H. Saxon, P. Mättig, H. G. Sander, A. Shapira, B. Roe, O. Römer, H. Hartmann, D. R. Quarrie, D. Revel, Roger Barlow, M. Schliwa, Norbert Wermes, D. Lüke, Stephen Lloyd, B. Löhr, G. Mikenberg, J. Pyrlik, D. Heyland, P. Joos, B. Foster, D.W. Schmitz, D. G. Cassel, P. Koehler, P. J. Dornan, R. Wedemeyer, D. Notz, R. Fohrmann, K. Lübelsmeyer, P. Söding, Y. Eisenberg, W. Braunschweig, P. Lecomte, U. Kötz, D. A. Garbutt, E. Hilger, R. Brandelik, M. Holder, K. Gather, H. U. Martyn, D. Trines, J. K. Sedgbeer, Walter Dr. Hillen, and G. Peise
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Nuclear physics ,Physics ,Hadronic decay ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Branching fraction ,Electron–positron annihilation ,ddc:530 ,High Energy Physics::Experiment ,State (functional analysis) ,Energy (signal processing) - Abstract
A fine energy scan has been performed to search for narrow states in e+e- annihilation at c.m. energies between 29.90 and 31.46 GeV. No such state has been observed. The 90% confidence upper limit on the leptonic decay width times the hadronic decay branching ratio is ΓeeBh
- Published
- 1979
- Full Text
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11. Photoproduction of pions on polarized protons and neutrons in the second resonance region
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K. Königsmann, V. Kadansky, O. Kaul, H. Schüller, K.H. Althoff, T. Miczaika, M. Gies, D. Menze, T. Yamaki, H. Herr, and W. Meyer
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Physics ,Nuclear and High Energy Physics ,media_common.quotation_subject ,Nuclear Theory ,Photon energy ,Resonance (particle physics) ,Asymmetry ,Nuclear physics ,Pion ,Angular distribution ,Neutron ,Atomic physics ,Nuclear Experiment ,media_common - Abstract
Measurements of the target asymmetry T = ( σ ↑ − σ ↓)/( σ ↑ + σ ↓) for the reactions γ p → π + n and γ n → π − p at a fixed photon energy of 850 MeV and pion c.m. angles between 70° and 150° are reported. The data are compared to the previously measured angular distribution at 700 MeV.
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- 1977
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12. A simple 3He cryostat for polarized targets
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V. Kadansky and H. Herr
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Cryostat ,Physics ,Nuclear physics ,SIMPLE (dark matter experiment) ,Continuous flow ,Helium-3 ,Cooling power ,General Medicine ,Atomic physics - Abstract
A horizontal continuous flow 4He cryostat, operating with 3He after a simple modification, achieved a cooling power of 200 mW at 0.5 K. The cryostat used for photoproduction experiments can be cooled from room temperature down to 0.5 K in about one hour.
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- 1974
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13. EVIDENCE FOR PLANAR EVENTS IN E+E- ANNIHILATION AT HIGH-ENERGIES
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U. Karshon, A. Pevsner, J. Rimkus, R. Riethmüller, W. Wallraff, E. Kogan, Gl Salmon, T. Meyer, W. Chinowsky, O. Römer, J. Pyrlik, A. Ladage, Lan. Wu Sau, H. L. Lynch, H. U. Martyn, H. M. Fischer, W. Koch, E.E. Ronat, V. Kadansky, A. Shapira, A. Schultz von Dratzig, R. Buhring, G. Poelz, R. Rüsch, Norbert Wermes, Stephen Lloyd, W. Rühmer, P. Lecomte, Roger Barlow, Gy. Wolf, M. Schliwa, K. W. Bell, H. Boerner, C. Youngman, H. Hartmann, W. G. Jones, G. Knop, D. M. Binnie, Georg Zobernig, John Illingworth, R. Wedemeyer, P. L. Woodworth, P. Schmüser, N. A. Downie, Walter Dr. Hillen, D. Revel, D. H. Saxon, G. Peise, K. Lübelsmeyer, P. Söding, J. Ringel, Y. Eisenberg, H. G. Sander, F. Roth, W. Braunschweig, H. Hultschig, B. H. Wiik, S. Yarker, John Hart, D. Notz, P. Mättig, D. R. Quarrie, Rj Cashmore, B. Löhr, J. Proudfoot, P. Joos, B. Foster, D. Lüke, G. Mikenberg, D. Heyland, D.W. Schmitz, P. J. Dornan, M. Holder, K. Gather, H. Kowalski, John Freeman, R. Fohrmann, M. Wollstadt, M. Ogg, J. K. Sedgebeer, W. Korbach, P. Leu, D. Pandoulas, U. Kötz, D. A. Garbutt, E. Hilger, R. Brandelik, and D. Trines
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Physics ,Quark ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Electron–positron annihilation ,Astrophysics::High Energy Astrophysical Phenomena ,Hadron ,High Energy Physics::Phenomenology ,Nuclear Theory ,Elementary particle ,Jet (particle physics) ,Gluon ,Nuclear physics ,Transverse plane ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
Hadron jets produced in e+e− annihilation between 13 GeV and 31.6 GeV in c.m. at PETRA are analyzed. The transverse momentum of the jets is found to increase strongly with c.m. energy. The broadening of the jets is not uniform in azimuthal angle around the quark direction but tends to yield planar events with large and growing transverse momenta in the plane and smaller transverse momenta normal to the plane. The simple q q collinear jet picture is ruled out. The observation of planar events shows that there are three basic particles in the final state. Indeed, several events with three well-separated jets of hadrons are observed at the highest energies. This occurs naturally when the outgoing quark radiates a hard noncollinear gluon, i.e., e + e − → q q g with the quarks and the gluons fragmenting into hadrons with limited transverse momenta.
- Published
- 1979
14. COMPARISON OF E+E- ANNIHILATION WITH QCD AND DETERMINATION OF THE STRONG COUPLING-CONSTANT
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V. Kadansky, D. Trines, R. Rüsch, D. Lüke, H. L. Lynch, G. Mikenberg, A. Schultz von Dratzig, H. G. Sander, H. Kowalski, D. G. Cassel, W. G. Jones, M. Holder, K. Gather, J. Pyrlik, P. Grossmann, D. Heyland, W. Wallraff, H. Hartmann, O. Römer, D.W. Schmitz, M. Wollstadt, B. Roe, John Freeman, E.E. Ronat, Gl Salmon, Kw Bell, Gy. Wolf, Walter Dr. Hillen, John Illingworth, B. Foster, G. Peise, N. A. Downie, P. L. Woodworth, M. Ogg, Rj Cashmore, G. Knop, D. Revel, P. Schmüser, J. Sedgbeer, R. Fohrmann, H. Boerner, T. Meyer, J. Rimkus, H. M. Fischer, J. Proudfoot, S. Yarker, H. Hultschig, H. Burkhardt, A. Ladage, N Wermes, L. Koepke, B. H. Wiik, B. Löhr, R. Riethmüller, T. R. Wyatt, P. Joos, A. Shapira, I. C. Brock, Sau Lan Wu, P. J. Dornan, P. Koehler, R. Wedemeyer, G Zobernig, P. Leu, P. Mättig, D. Notz, D. R. Quarrie, Roger Barlow, M. Schliwa, D. H. Saxon, Y. Eisenberg, C. Youngman, U. Karshon, J. C. Hart, D. Pandoulas, Stephen Lloyd, D. M. Binnie, Hu Martyn, W. Braunschweig, P. Lecomte, R.C.E. Devenish, W. Koch, G. Poelz, K. Lübelsmeyer, P. Söding, U. Kötz, D. A. Garbutt, E. Hilger, and R. Brandelik
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Coupling constant ,Quantum chromodynamics ,Quark ,Physics ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Electron–positron annihilation ,High Energy Physics::Phenomenology ,Hadron ,Gluon ,Nuclear physics ,Fragmentation (mass spectrometry) ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
We have analyzed 1113 events of the reaction e+e− → hadrons at CM energies of 12 and 30 GeV in order to make a detailed comparison with QCD. Perturbative effects can be well separated from effects depending on the quark and gluon fragmentation parameters to yield a reliable measurement of the coupling constant αS. At 30 GeV, the result is αS = 0.17 ± 0.02 (statistical) ± 0.03 (systematic). QCD model predictions, using the fragmentation parameters determined along with αS, agree with both gross properties of the final states and with detailed features of the three-jet states.
- Published
- 1980
15. PRODUCTION AND PROPERTIES OF THE TAU-LEPTON IN E+E- ANNIHILATION AT CM ENERGIES FROM 12-GEV TO 31.6-GEV
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H. M. Fischer, W. Wallraff, M. Holder, K. Gather, Georg Zobernig, Gl Salmon, I. C. Brock, W. Koch, P. Lecomte, D. Trines, D. H. Saxon, T. Meyer, G. Poelz, P. Koehler, D. Pandoulas, P. Mättig, Y. Eisenberg, N. A. Downie, Stephen Lloyd, J. K. Sedgbeer, A. Ladage, D. Lüke, W. Braunschweig, R. Riethmüller, Walter Dr. Hillen, Rj Cashmore, G. Peise, B. Roe, O. Römer, J. Pyrlik, R.C.E. Devenish, G. Mikenberg, D. G. Cassel, H. Hartmann, Roger Barlow, M. Schliwa, S. Yarker, D. R. Quarrie, D. Heyland, P. Grossmann, D. Revel, J. Proudfoot, H. L. Lynch, H. U. Martyn, A. Schultz von Dratzig, C. Youngman, T. R. Wyatt, D.W. Schmitz, P. Schmüser, M. Wollstadt, K. Lübelsmeyer, H. Boerner, K. W. Bell, John Freeman, M. Ogg, P. J. Dornan, P. Söding, V. Kadansky, H. Kowalski, D. Notz, U. Karshon, E. Hilger, R. Rüsch, R. Wedemeyer, B. Löhr, Gy. Wolf, R. Fohrmann, P. Joos, R. Brandelik, B. Foster, U. Kötz, P. Leu, D. A. Garbutt, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, A. Shapira, E.E. Ronat, G. Knop, Norbert Wermes, D. M. Binnie, J. Rimkus, W. G. Jones, John Illingworth, P. L. Woodworth, and H. G. Sander
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Physics ,Nuclear physics ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Cutoff ,High Energy Physics::Experiment ,Lepton - Abstract
We have observed τ production in e+e- annihilation at centre-of-mass energies between 12 and 31.6 GeV with cross sections in agreement with the QED τ-pair cross section. Branching ratios for τ decay have been measured and are consistent with the world averages. We have determined the cutoff parameters of QED Λ+ (Λ-) to be > 73 GeV (82 GeV) and have obtained an upper limit on the τ lifetime of 1.4 × 10-12 s(95% CL). © 1980.
- Published
- 1980
16. EVIDENCE FOR CHARGED PRIMARY PARTONS IN E+E--]2 JETS
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W. G. Jones, M. Holder, K. Gather, E.E. Ronat, P. Grossmann, G. Knop, D. Trines, D. G. Cassel, R. A. Stern, U. Kötz, H. L. Lynch, B. Foster, J. Sedgbeer, D. A. Garbutt, D. Lüke, E. Hilger, Walter Dr. Hillen, P. Mättig, W. Braunschweig, Hermann Kolanoski, H. G. Sander, G. Mikenberg, A. Schultz von Dratzig, D. Heyland, R. Wedemeyer, G. Peise, D.W. Schmitz, Gl Salmon, F. J. Kirschfink, P. Koehler, R. Brandelik, T. Barklow, T. Meyer, I. Al-Agil, D. R. Quarrie, T. R. Wyatt, H. Hultschig, V. Kadansky, John Freeman, R. Riethmüller, B. H. Wiik, H. M. Fischer, Ehud Duchovni, D. Notz, P. Lecomte, S. Yarker, L. Koepke, Sau Lan Wu, John Illingworth, P. J. Dornan, M. Ogg, D. Revel, Kw Bell, M. Wollstadt, R. Beuselink, R. Fohrmann, O. Römer, P. Schmüser, H. Kowalski, R.C.E. Devenish, P. L. Woodworth, A. Ladage, R. Rüsch, I. C. Brock, G Zobernig, N Wermes, J. Rimkus, Y. Eisenberg, P. Leu, G. Rudolph, P. Joos, C. Youngman, Hu Martyn, H. Boerner, K. Lübelsmeyer, P. Söding, E. Wicklund, Rj Cashmore, D. H. Saxon, H. Hartmann, D. Pandoulas, J. C. Hart, J. Proudfoot, Sl Lloyd, A. Shapira, W. Wallraff, W. Koch, G. Poelz, Gy. Wolf, H. Burkhardt, U. Karshon, D. M. Binnie, and J. Pyrlik
- Subjects
Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Particle physics ,Primary (astronomy) ,Electron–positron annihilation ,Parton - Published
- 1981
17. K0-PRODUCTION IN E+E- ANNIHILATIONS AT 30 GEV CENTER OF MASS-ENERGY
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L. Koepke, H. Hultschig, Gl Salmon, B. H. Wiik, I. C. Brock, Sau Lan Wu, T. Meyer, J. Pyrlik, G Zobernig, W. Braunschweig, P. J. Dornan, M. Wollstadt, A. Ladage, P. Lecomte, Hu Martyn, P. Leu, Rj Cashmore, H. L. Lynch, U. Kötz, W. Koch, E.E. Ronat, G. Knop, A. Schultz von Dratzig, Kw Bell, B. Löhr, D. A. Garbutt, P. Schmüser, U. Karshon, O. Römer, G. Poelz, D. Trines, D. G. Cassel, R. Riethmüller, D. Lüke, H. Boerner, P. Joos, R.C.E. Devenish, D. Pandoulas, H. Kowalski, G. Mikenberg, B. Roe, K. Lübelsmeyer, P. Söding, P. Koehler, Gy. Wolf, R. Wedemeyer, E. Hilger, D. Heyland, P. Mättig, Y. Eisenberg, A. Shapira, D.W. Schmitz, C. Youngman, R. Brandelik, D. Notz, T. R. Wyatt, N Wermes, Roger Barlow, M. Schliwa, D. R. Quarrie, H. M. Fischer, D. H. Saxon, H. Burkhardt, N. A. Downie, J. Rimkus, R. Fohrmann, Walter Dr. Hillen, G. Peise, J. C. Hart, Sl Lloyd, S. Yarker, D. Revel, W. Wallraff, B. Foster, John Illingworth, P. L. Woodworth, D. M. Binnie, J. Sedgbeer, H. Hartmann, J. Proudfoot, V. Kadansky, H. G. Sander, John Freeman, M. Ogg, R. Rüsch, P. Grossmann, W. G. Jones, M. Holder, and K. Gather
- Subjects
Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Production (computer science) ,Center of mass ,Scaling ,Energy (signal processing) - Abstract
Inclusive K0-production has been measured in e+e- annihilation at a center of mass energy of about W = 30 GeV. The ratio of K0 + K0 production to μ+μ- production is RK0 = 5.6 ± 1.1 (statist. error) ± 0.8 (system.error) This value is about a factor of three higher than RK0 at W = 7 GeV. The cross sections (s/β) dσ/dx is consistent with a scaling behaviour.
- Published
- 1980
18. TEST OF QED IN E+E- ANNIHILATION AT ENERGIES BETWEEN 12 AND 31.6 GEV
- Author
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J. Pyrlik, D. H. Saxon, K. Lüberlsmeyer, Gl Salmon, U. Kötz, P. Koehler, H. Burkhardt, P. Grossmann, J. C. Hart, D. Notz, Kw Bell, Sl Lloyd, D. A. Garbutt, P. Schmüser, T. Meyer, P. Leu, W. Wallraff, H. Hartmann, H. Hultschig, O. Römer, B. H. Wiik, A. Ladage, H. L. Lynch, Sau Lan Wu, P. J. Dornan, W. Koch, D. Pandoulas, A. Schultz von Dratzig, M. Wollstadt, J. Proudfoot, B. Foster, G. Piese, D. Heyland, G. Poelz, A. Shapira, J. Sedgbeer, W. G. Jones, V. Kadansky, M. Holder, Rj Cashmore, K. Gather, D.W. Schmitz, R. Riethmüller, D. G. Cassel, H. Boerner, R.C.E. Devenish, R. Rüsch, Hu Martyn, P. Söding, Y. Eisenberg, C. Youngman, R. Wedemeyer, W. Braunschweig, E.E. Ronat, D. M. Binnie, Roger Barlow, M. Schliwa, E. Hilger, R. Fohrmann, U. Karshon, G. Knop, Gy. Wolf, L. Koepke, P. Lecomte, John Illingworth, T. R. Wyatt, R. Brandelik, I. C. Brock, G Zobernig, P. L. Woodworth, D. Lüke, G. Mikenberg, N. A. Downie, H. Kowalski, H. M. Fischer, J. Rimkus, P. Mättig, D. R. Quarrie, Walter Dr. Hillen, S. Yarker, N Wermes, B. Roe, D. Trines, D. Revel, John Freeman, M. Ogg, B. Löhr, H. G. Sander, and P. Joos
- Subjects
Physics ,Nuclear physics ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Weinberg angle - Abstract
We have measured the reactions e+e− → e+e− → μ+μ− and e+e− → γγ at c.m. energies between 12 and 31.6 GeV. Excellent agreement with the predictions of QED has been found, resulting in cut off parameters Λ+ > 112 GeV and Λ− > 139 GeV for the first process and Λ+ > 34 GeV and Λ− > 42 GeV (95% c.1.) for the last one. A limit on the Weinberg angle of sin2θW < 0.55 (95% c.1.) has been obtained.
- Published
- 1980
19. Two photon results from TASSO
- Author
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C. Youngman, R.C.E. Devenish, E.E. Ronat, Gl Salmon, H. L. Lynch, J. Rimkus, N. A. Downie, B. Roe, T. Meyer, H. U. Martyn, H. Hartmann, G. Knop, H. Fischer, R. Wedemeyer, Guenter Wolf, A. Ladage, M. Wollstadt, Norbert Wermes, D. Pandoulas, D. G. Cassel, Roger Barlow, B. Löhr, A. Shapira, M. Schliwa, H. Boerner, P. Joos, Georg Zobernig, T. R. Wyatt, M. Holder, P. Leu, R. Riethmüller, A. Schultz von Dratzig, B. Foster, H. Hultschig, P. Grossmann, U. Karshon, K. W. Bell, B. H. Wiik, John Hart, W. G. Jones, V. Kadansky, D. Revel, L. Koepke, Sau Lan Wu, J. Proudfoot, G. Mikenberg, I. C. Brock, K. Gather, John Illingworth, P. Mättig, D. Notz, J. Pyrlik, P. L. Woodworth, D. H. Saxon, D. Lüke, R. Rüsch, M. Ogg, W. Koch, D. M. Binnie, H. G. Sander, D. R. Quarrie, D. Heyland, G. Poelz, D.W. Schmitz, H. Kowalski, P. J. Dornan, Stephen Lloyd, R. Fohrmann, D. Trines, P. Schmüser, R. J. Cashmore, W. Wallraff, U. Kötz, Hermann Kolanoski, J. K. Sedgbeer, D. A. Garbutt, E. Hilger, P. Koehler, R. Brandelik, K. Lübelsmeyer, P. Söding, Walter Dr. Hillen, G. Peise, P. Lecomte, J. Freemann, S. Yarker, Y. Eisenberg, W. Braunschweig, and O. Römer
- Subjects
Physics ,Nuclear physics ,Annihilation ,Two-photon excitation microscopy ,Physics::Plasma Physics ,Detector ,Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing) ,High Energy Physics::Experiment ,Invariant mass ,Physics::History of Physics ,Storage ring - Abstract
Two photon annihilation processes were observed with the TASSO detector at the e+e- storage ring PETRA. We report on the analyses of untagged and single tag events.
- Published
- 1980
- Full Text
- View/download PDF
20. CHARGED PION, KAON, PROTON AND ANTIPROTON PRODUCTION IN HIGH-ENERGY E+E- ANNIHILATIONS
- Author
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R.C.E. Devenish, Walter Dr. Hillen, G. Peise, Gl Salmon, B. Roe, Rj Cashmore, H. M. Fischer, John Freeman, Gy. Wolf, W. Braunschweig, E. Hilger, S. Yarker, M. Ogg, D. Heyland, N. A. Downie, T. Meyer, D.W. Schmitz, A. Ladage, P. Lecomte, P. Grossmann, W. Wallraff, J. Pyrlik, H. Burkhardt, W. G. Jones, M. Holder, K. Gather, H. Hartmann, H. L. Lynch, D. Pandoulas, Roger Barlow, M. Schliwa, A. Schultz von Dratzig, E.E. Ronat, R. Brandelik, R. Wedemeyer, J. Proudfoot, Y. Eisenberg, G. Knop, D. Revel, C. Youngman, D. G. Cassel, Hu Martyn, K. Lübelsmeyer, L. Koepke, A. Shapira, H. Kowalski, B. Foster, P. Söding, J. Sedgbeer, I. C. Brock, G Zobernig, U. Karshon, W. Koch, U. Kötz, P. Koehler, D. A. Garbutt, G. Poelz, P. Mättig, D. Notz, H. G. Sander, V. Kadansky, O. Römer, Kw Bell, D. R. Quarrie, R. Fohrmann, D. Lüke, G. Mikenberg, D. Trines, R. Rüsch, P. Schmüser, R. Riethmüller, B. Löhr, P. Leu, P. Joos, H. Hultschig, Hermann Kolanoski, B. H. Wiik, H. Boerner, Sau Lan Wu, P. J. Dornan, N Wermes, D. H. Saxon, J. C. Hart, Sl Lloyd, D. M. Binnie, John Illingworth, T. R. Wyatt, P. L. Woodworth, M. Wollstadt, and J. Rimkus
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Proton ,Nuclear Theory ,Hadron ,Nuclear physics ,Baryon ,Momentum ,Time of flight ,Pion ,Antiproton ,Yield (chemistry) ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
Production of pions, kaons, protons and antiprotons has been studied in e + e − annihilations at 12 and 30 GeV centre of mass energy using time of flight techniques. The fractional yield of charged kaons and baryons appears to rise with outgoing particle momentum. At our highest energy at least 40% of e + e − annihilations into hadrons are estimated to contain baryons.
- Published
- 1980
21. Measurement of the target asymmetry for the reaction γp↑ → π+n at photon energies between 0.7 and 2.2 GeV and a pion CM-angle of 65°
- Author
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V. Kadansky, W. Meyer, D. Menze, E. Hilger, H. Herr, K.H. Althoff, O. Kaul, T. Miczaika, and R. Conrad
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Photon ,Astrophysics::High Energy Astrophysical Phenomena ,media_common.quotation_subject ,Nuclear Theory ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Electron ,Asymmetry ,Synchrotron ,law.invention ,Nuclear physics ,Pion ,law ,High Energy Physics::Experiment ,Nuclear Experiment ,media_common - Abstract
At the Bonn 2.5.GeV electron synchrotron the target asymmetry for the photoproduction of positive pions has been measured. Data were taken at photon energies between 0.7 and 2.2 GeV and a pion CM-angle of 65°.
- Published
- 1975
- Full Text
- View/download PDF
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