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6. Two photon results from TASSO

Author

TASSO Collaboration, Brandelik, R., Braunschweig, W., Gather, K., Kadansky, V., Lübels-meyer, K., Mättig, P., Martyn, H. -U., Peise, G., Rimkus, J., Sander, H. G., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Koepke, L., Kolanoski, H., Knop, G., Leu, P., Löhr, B., Wedemeyer, R., Wermes, N., Wollstadt, M., Cassel, D. G., Heyland, D., Hultschig, H., Joos, P., Koch, W., Koehler, P., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H. L., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Schliwa, M., Söding, P., Wiik, B. H., Wolf, G., Fohrmann, R., Holder, M., Poelz, G., Römer, O., Rüsch, R., Schmüser, P., Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Sedgbeer, J., Yarker, S., Youngman, C., Barlow, R. J., Brock, I., Cashmore, R. J., Devenish, R., Grossmann, P., Illingworth, J., Ogg, M., Roe, B., Salmon, G. L., Wyatt, T., Bell, K. W., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Saxon, D. H., Woodworth, P. L., Eisenberg, Y., Karshon, U., Revel, D., Ronat, E., Shapira, A., Freemann, J., Lecomte, P., Meyer, T., Wu, Sau Lan, Zobernig, G., Ehlers, J., editor, Hepp, K., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Zittartz, J., editor, Beiglböck, W., editor, Cochard, Gérard, editor, and Kessler, Paul, editor

Published
1980
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7. SEARCH FOR NEW SEQUENTIAL LEPTONS IN E+E- ANNIHILATION AT PETRA ENERGIES

Author

John Freeman, M. Ogg, Walter Dr. Hillen, D. M. Binnie, G. Peise, H. Hartmann, F. J. Kirschfink, W. Wallraff, H. M. Fischer, W. Koch, J. Proudfoot, H. Hultschig, B. H. Wiik, T. Barklow, S. Yarker, P. J. Dornan, G. Poelz, G. Rudolph, D. G. Cassel, E. Hilger, E.E. Ronat, R. Rüsch, Rj Cashmore, J. Pyrlik, H. Boerner, G. Knop, D. Heyland, R. A. Stern, Ehud Duchovni, D. H. Saxon, P. Joos, R.C.E. Devenish, R. Brandelik, E. Wicklund, M. A. Downie, D.W. Schmitz, J. C. Hart, P. Mättig, John Illingworth, R. Wedemeyer, AS von Dratzig, P. L. Woodworth, O. Römer, Gl Salmon, T. Meyer, Kadansky, J. Rimkus, H. Kowalski, R. Riethmüller, D. Trines, A. Ladage, Stephen Lloyd, H. G. Sander, K. Lübelsmeyer, P. Söding, Gy. Wolf, P. Koehler, R. Fohrmann, L. Koepke, Hermann Kolanoski, U. Karshon, Y. Eisenberg, P. Grossmann, U. Kötz, H. Burkhardt, D. Notz, S Lan Wu, I. C. Brock, G Zobernig, C. Youngman, A. Shapira, D. A. Garbutt, W. G. Jones, Kw Bell, P. Schmüser, M. Holder, K. Gather, I. Al-Agil, D. Revel, P. Leu, D. Lüke, G. Mikenberg, W. Braunschweig, P. Lecomte, B. Foster, J. Sedgbeer, H. L. Lynch, T. R. Wyatt, D. Pandoulas, Hu Martyn, Quarrie, M. Wollstadt, and N Wermes

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Lepton
Published
2016

8. RHO-RHO PRODUCTION BY 2 PHOTON SCATTERING

Author

Brandelik, R, Braunschweig, W, Gather, K, Kadansky, V, Lubelsmeyer, K, Martyn, H, Peise, G, Rimkus, J, Sander, H, Schmitz, D, Dratzig, A, Trines, D, Wallraff, W, Boerner, H, Fischer, H, Hartmann, H, Hilger, E, Hillen, W, Knop, G, Koepke, L, Kolanoski, H, Leu, P, Lohr, B, Wedemeyer, R, and Wermes, N

Published
2016

9. EVIDENCE FOR A SPIN-1 GLUON IN 3-JET EVENTS

Author

Brandelik, R, Braunschweig, W, Gather, K, Kadansky, V, Kirschfink, F, Lubelsmeyer, K, Martyn, H, Peise, G, Rimkus, J, Sander, H, Schmitz, D, Dratzig, A, Trines, D, Wallraff, W, Boerner, H, Fischer, H, Hartmann, H, Hilger, E, Hillen, W, Knop, G, Koepke, L, Kolanoski, H, Leu, P, Lohr, B, and Wedemeyer, R

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.

Published
2016

10. E+E- ANNIHILATION AT HIGH-ENERGIES AND SEARCH FOR THE T-QUARK CONTINUUM CONTRIBUTION

Author

H. M. Fischer, D. G. Cassel, P. Koehler, Rj Cashmore, John Freeman, M. Ogg, A. Schultz von Dratzig, B. Löhr, D. M. Binnie, E. Hilger, P. Joos, D. Heyland, D. Notz, E.E. Ronat, D.W. Schmitz, John Illingworth, G. Knop, R. Brandelik, Walter Dr. Hillen, P. L. Woodworth, G. Peise, J. Pyrlik, Gl Salmon, H. L. Lynch, A. Pevsner, M. Wollstadt, N Wermes, J. Rimkus, B. Roe, G. Wolff, O. Römer, H. Kowalski, D. H. Saxon, R. Fohrmann, T. Meyer, S. Yarker, P. Mättig, N. A. Downie, D. Trines, U. Kötz, Kw Bell, A. Ladage, P. Schmüser, B. Foster, H. Hartmann, D. A. Garbutt, D. R. Quarrie, J. Sedgbeer, D. Revel, J. C. Hart, P. Leu, W. Wallraff, W. G. Jones, M. Holder, J. Ringel, W. Chinowsky, K. Gather, D. Pandoulas, Y. Eisenberg, D. Lüke, G Zobernig, C. Youngman, G. Mikenberg, W. Koch, Hu Martyn, Stephen Lloyd, G. Poelz, H. G. Sander, H. Boerner, R. Riethmüller, J. Proudfoot, V. Kadansky, R. Rüsch, K. Lübelsmeyer, P. Söding, W. Braunschweig, P. Lecomte, U. Karshon, A. Shapira, Roger Barlow, M. Schliwa, R. Wedemeyer, H. Hultschig, B. H. Wiik, Sau Lan Wu, and P. J. Dornan

Subjects
Physics, Nuclear physics, Top quark, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Nuclear fusion, High Energy Physics::Experiment, Continuum (set theory), Nuclear Experiment, Engineering (miscellaneous), Sphericity
Abstract

Measurements of R, sphericity and thrust are presented for c.m. energies between 12 and 31.6 GeV. A possible contribution of a t {Mathematical expression} continuum can be ruled out for c.m. energies between 16 and 31 GeV. © 1980 Springer-Verlag.

Published
2016

11. e + e− annihilation at high energies and search for thet-quark continuum contribution

Author

Brandelik, R., Braunschweig, W., Gather, K., Kadansky, V., Lübelsmeyer, K., Mättig, P., Martyn, H. -U., Peise, G., Rimkus, J., Sander, H. G., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Knop, G., Leu, P., Löhr, B., Wedemeyer, R., Wermes, N., Wollstadt, M., Cassel, D. G., Heyland, D., Hultschig, H., Joos, P., Koch, W., Koehler, P., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H. L., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Schliwa, M., Söding, P., Wiik, B. H., Wolff, G., Fohrmann, R., Holder, M., Poelz, G., Ringel, J., Römer, O., Rüsch, R., Schmüser, P., Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Pevsner, A., Sedgbeer, J., Yarker, S., Youngman, C., Barlow, R. J., Cashmore, R. J., Illingworth, J., Ogg, M., Roe, B., Salmon, G. L., Bell, K. W., Chinowsky, W., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Saxon, D. H., Woodworth, P. L., Eisenberg, Y., Karshon, U., Revel, D., Ronat, E., Shapira, A., Freeman, J., Lecomte, P., Meyer, T., Wu, Sau Lan, and Zobernig, G.

Published
1980
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12. Deadlock-free routing based on ordered links

Author

Guy L. Steele, M. Yuksel, Miriam C. Kadansky, J. Reynders, Dah Ming Chiu, and Radia J. Perlman

Subjects
Routing protocol, Static routing, Spanning tree, Equal-cost multi-path routing, Computer science, business.industry, Routing table, Distributed computing, Policy-based routing, Enhanced Interior Gateway Routing Protocol, Path vector protocol, Graph theory, Deadlock, Network topology, Distance-vector routing protocol, Routing domain, Link-state routing protocol, Multipath routing, K shortest path routing, Destination-Sequenced Distance Vector routing, business, Hierarchical routing, Computer network
Abstract

This paper describes a new class of deadlock-free routing algorithms for irregular networks based on ordered links. In this case, the links are ordered by partitioning them into a set of layers, each layer containing a spanning tree (when possible). Deadlock free routes can then be derived by using links with non-decreasing order. The deadlock-freedom property is proved. Two different implementations of the routing algorithm are studied. The resultant performance of these algorithms is then compared to other known algorithms: the shortest-path algorithm (which may result in deadlocks) and the up*/down* algorithm. Various performance metrics are considered, including path-length, network capacity, fault tolerance and time of computation. We argue that network capacity is the most important metric to optimize. It is shown that the proposed algorithms are promising since they usually achieve higher network capacity than up*/down*, while they perform only slightly worse than up*/down* in other metrics.

Published
2003

13. A congestion control algorithm for tree-based reliable multicast protocols

Author

Joe Provino, Haifeng Zhu, Miriam C. Kadansky, Joseph S. Wesley, Dah Ming Chiu, and Hans-Peter Bischof

Subjects
Flow control (data), business.industry, Computer science, Distributed computing, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Throughput, TCP congestion-avoidance algorithm, Reliable multicast, Algorithm design, The Internet, Robust control, business, Congestion control algorithm, Computer network
Abstract

This paper contains a detailed description of the congestion control algorithm of TRAM, a tree-based reliable multicast protocol. This algorithm takes advantage of regular acknowledgements from the receivers that propagate back to the sender via the repair tree. This scalable feedback mechanism is used to collect receiver credits. Complementing the windowing mechanism, packet transmission is smoothed by using a data rate commensurate with the window size. Additional details, such as how to prune slow receivers, and how to implement the rate scheduler on non-real-time systems are also discussed. The performance of the congestion control algorithm is then evaluated in extended LANs, and wide area networks. The fairness of bandwidth-sharing with other (TCP) traffic is also evaluated.

Published
2003

14. Experiences in programming a traffic shaper

Author

Dah Ming Chiu, M. Kadansky, Joe Provino, and J. Wesley

Subjects
Packet switching, Transmission (telecommunications), Computer science, Network packet, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Real-time computing, Traffic shaping, Sleep (system call)
Abstract

A traffic shaper regulates the transmission of packets according to a pre-determined rate, seemingly a straightforward program. A frequently used technique to achieve the prescribed rate is to interleave packet transmissions with sleeps, an operating system function. If the sleep duration cannot be accurately controlled, it can adversely impact the performance of the traffic shaper. We describe the problem caused by an inaccurate sleep, various algorithms for compensating for the inaccuracy, and how to accommodate intermittent data arrival streams at the same time. The objective is to produce an accurate, yet simple, robust, and efficient traffic shaper.

Published
2002

15. Pruning algorithms for multicast flow control

Author

Haifeng Zhu, Joe Provino, Joseph S. Wesley, Miriam C. Kadansky, and Dah Ming Chiu

Subjects
Flow control (data), Multicast, Protocol Independent Multicast, Computer science, business.industry, Distributed computing, Distance Vector Multicast Routing Protocol, Source-specific multicast, Xcast, Communication source, business, Algorithm, Implementation, Computer network
Abstract

Multicast flow (congestion) control establishes a data rate for a multicast session based on prevailing bandwidth availability given other network traffic. This rate is dictated by the sender's path to the slowest receiver. This level of performance, however, may not be in the best interest for the multicast group as a whole. A pruning algorithm is then used to identify and remove some slow members so that the performance is acceptable for the whole group. This paper discusses the conceptual issues with pruning, and proposes practical algorithms for pruning. The crux of the problem is to achieve a balance between speed and accuracy, because increased accuracy tends to require monitoring for a longer time and using more global information. We evaluate and compare different strategies using both simulation and measurement of real implementations.

Published
2000

16. e + e ??? annihilation at high energies and search for the t -quark continuum contribution

Author

Department of Nuclear Physics, Oxford University, Oxford, UK; University of Michigan, Ann Arbor, MI, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany, Department of Nuclear Physics, Oxford University, Oxford, UK, I. Physikalisches Institut der RWTH Aachen, D-5100, Aachen, Federal Republic of Germany, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK; University of California, Berkeley, CA, USA, Weizmann Institute, Rehovot, Israel, Department of Physics, University of Wisconsin, Madison, Wisconsin, USA, Department of Physics, Imperial College London, London, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Cornell University, Ithaca, NY, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany; SLAC, Stanford, CA, USA, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; ENAL, Batavia, IL, USA, Department of Physics, Imperial College London, London, UK; Johns Hopkins University, Baltimore, MD, USA, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany; CERN, Geneva, Switzerland, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Weizmann Institute, Rehovot, Israel, Ann Arbor, Lynch, H. L., Hilger, E., Rimkus, J., Foster, B., Revel, D., Kadansky, V., Lecomte, P., Leu, P., Schultz von Dratzig, A., Saxon, D. H., Pyrlik, J., Schliwa, M., Salmon, G. L., Chinowsky, W., Holder, M., L??ke, D., Riethm??ller, R., Bell, K. W., S??ding, P., Poelz, G., Ladage, A., Joos, P., Pevsner, A., Sedgbeer, J., Jones, W. G., Koch, W., Heyland, D., Wermes, N., Braunschweig, W., Wedemeyer, R., Brandelik, R., Dornan, P. J., Wolff, G., Schm??ser, P., Schmitz, D., Sander, H. G., Peise, G., Hart, J. C., Karshon, U., Boerner, H., Wallraff, W., Quarrie, D. R., Eisenberg, Y., Fohrmann, R., Woodworth, P. L., Fischer, H. M., Hillen, W., Ronat, E., Meyer, T., Hartmann, H., Knop, G., R??sch, R., Notz, D., Kowalski, H., Ringel, J., Binnie, D. M., Trines, D., Downie, N. A., Garbutt, D. A., L??hr, B., Wollstadt, M., K??tz, U., Hultschig, H., Cassel, D. G., Koehler, P., Pandoulas, D., Lloyd, S. L., Wu, Sau Lan, Yarker, S., Zobernig, G., Shapira, A., Wiik, B. H., Proudfoot, J., Martyn, H. -U., Gather, K., Cashmore, R. J., Barlow, R. J., Illingworth, J., Mikenberg, G., M??ttig, P., L??belsmeyer, K., Ogg, M., Roe, B. P., Freeman, J., Youngman, C., R??mer, O., Department of Nuclear Physics, Oxford University, Oxford, UK; University of Michigan, Ann Arbor, MI, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany, Department of Nuclear Physics, Oxford University, Oxford, UK, I. Physikalisches Institut der RWTH Aachen, D-5100, Aachen, Federal Republic of Germany, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK; University of California, Berkeley, CA, USA, Weizmann Institute, Rehovot, Israel, Department of Physics, University of Wisconsin, Madison, Wisconsin, USA, Department of Physics, Imperial College London, London, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Cornell University, Ithaca, NY, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany; SLAC, Stanford, CA, USA, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; ENAL, Batavia, IL, USA, Department of Physics, Imperial College London, London, UK; Johns Hopkins University, Baltimore, MD, USA, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany; CERN, Geneva, Switzerland, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Weizmann Institute, Rehovot, Israel, Ann Arbor, Lynch, H. L., Hilger, E., Rimkus, J., Foster, B., Revel, D., Kadansky, V., Lecomte, P., Leu, P., Schultz von Dratzig, A., Saxon, D. H., Pyrlik, J., Schliwa, M., Salmon, G. L., Chinowsky, W., Holder, M., L??ke, D., Riethm??ller, R., Bell, K. W., S??ding, P., Poelz, G., Ladage, A., Joos, P., Pevsner, A., Sedgbeer, J., Jones, W. G., Koch, W., Heyland, D., Wermes, N., Braunschweig, W., Wedemeyer, R., Brandelik, R., Dornan, P. J., Wolff, G., Schm??ser, P., Schmitz, D., Sander, H. G., Peise, G., Hart, J. C., Karshon, U., Boerner, H., Wallraff, W., Quarrie, D. R., Eisenberg, Y., Fohrmann, R., Woodworth, P. L., Fischer, H. M., Hillen, W., Ronat, E., Meyer, T., Hartmann, H., Knop, G., R??sch, R., Notz, D., Kowalski, H., Ringel, J., Binnie, D. M., Trines, D., Downie, N. A., Garbutt, D. A., L??hr, B., Wollstadt, M., K??tz, U., Hultschig, H., Cassel, D. G., Koehler, P., Pandoulas, D., Lloyd, S. L., Wu, Sau Lan, Yarker, S., Zobernig, G., Shapira, A., Wiik, B. H., Proudfoot, J., Martyn, H. -U., Gather, K., Cashmore, R. J., Barlow, R. J., Illingworth, J., Mikenberg, G., M??ttig, P., L??belsmeyer, K., Ogg, M., Roe, B. P., Freeman, J., Youngman, C., and R??mer, O.

Abstract

Measurements of R , sphericity and thrust are presented for c.m. energies between 12 and 31.6 GeV. A possible contribution of a t continuum can be ruled out for c.m. energies between 16 and 31 GeV.

Published
2006

22. e e annihilation at high energies and search for the t-quark continuum contribution.

Author

Brandelik, R., Braunschweig, W., Gather, K., Kadansky, V., Lübelsmeyer, K., Mättig, P., Martyn, H., Peise, G., Rimkus, J., Sander, H., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H., Hartmann, H., Hilger, E., Hillen, W., and Knop, G.

Abstract

Measurements of R, sphericity and thrust are presented for c.m. energies between 12 and 31.6 GeV. A possible contribution of a t $$\bar t$$ continuum can be ruled out for c.m. energies between 16 and 31 GeV. [ABSTRACT FROM AUTHOR]

Published
1980
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23. Photoproduction of neutral pions off hydrogen at photonenergies between 0.55 and 2.2 GeV at a cm-angle of 120°

Author

E. Hilger, U. Opara, D. Menze, W. J. Schwille, H. Herr, P. Feller, V. Kadansky, and Th. Miczaika

Subjects
Scattering cross-section, Physics, Nuclear and High Energy Physics, Range (particle radiation), Hydrogen, chemistry.chemical_element, Electron, Synchrotron, law.invention, Nuclear physics, Pion, chemistry, law, Atomic physics
Abstract

The differential cross section has been measured for the reaction γ +p→ π o + p at the Bonn 2.5 GeV electron synchrotron in the energy range from 0.55 to 2.2 GeV at a c.m.angle of 120 degrees.

Published
1974

24. RHO-RHO production by two photon scattering

Author

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

25. Forward photoproduction of neutral pions on polarized protons in the third resonance region

Author

H. Schilling, T. Yamaki, W. Meyer, H. Herr, V. Kadansky, B. Löhr, W. Jansen, and D. Husmann

Subjects
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.

Published
1977

26. Rapid growth of charged particle multiplicity in high energy e+e− annihilations

Author

Brandelik, R., Braunschweig, W., Schmitz, D., von Dratzig, A. Schultz, Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Knop, G., Gather, K., Leu, P., Löhr, B., Wedemeyer, R., Wermes, N., Wollstadt, M., Cassel, D. G., Heyland, D., Hultschig, H., Joos, P., Koch, W., Kadansky, V., Koehler, P., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H. L., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Lübelsmeyer, K., Schliwa, M., Söding, P., Wiik, B. H., Wolf, G., Fohrmann, R., Holder, M., Poelz, G., Ringel, J., Römer, O., Rüsch, R., Mättig, P., Schmüser, P., Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Pevsner, A., Sedgbeer, J., Martyn, H.-U., Yarker, S., Youngman, C., Barlow, R. J., Cashmore, R. J., Illingworth, J., Ogg, M., Roe, B., Salmon, G. L., Bell, K. W., Chinowsky, W., Peise, G., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Saxon, D. H., Woodworth, P. L., Eisenberg, Y., Karshon, U., Revel, D., Ronat, E., Rimkus, J., Shapira, A., Freeman, J., Lecomte, P., Meyer, T., Wu, Sau Lan, Zobernig, G., TASSO Collaboration, and Sander, H. G.

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, High energy, Particle physics, Annihilation, Electron–positron annihilation, Hadron, ddc:530, Rapidity, Multiplicity (chemistry), Nuclear Experiment, Charged particle
Abstract

Hadron production by e+e- annihilation has been studied for c.m. energies W between 13 and 31.6 GeV. As a function of 1n W the charged particle multiplicity grows faster at high energy than at lower energies. This is correlated with a rise in the plateau of the rapidity distribution. The cross section sdσ/dx is found to scale within ±30% for x > 0.2 and 5 ≤ W ≤ 31.6 GeV. © 1980.

Published
1980

27. The Liquid-Argon-Endcap-Shower-Detector for TASSO

Author

J. Rimkus, G. Peise, F J Kirschfink, W Wallraff, K Lübelsmeyer, and V Kadansky

Subjects
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.

Published
1981

28. Angular distribution of the target asymmetry on polarized protons for the reaction γp↑ → π+n at a photon energy of 700 MeV

Author

V. Kadansky, K. Königsmann, O. Kaul, G. Lenzen, R. Conrad, T. Miczaika, M. Gies, W. Meyer, K.H. Althoff, D. Menze, and H. Herr

Subjects
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.

Published
1976

29. Photoproduction of K+Λ0 on polarized protons

Author

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

Subjects
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.

Published
1978

30. Photoproduction of negative pions on polarized neutrons in the region of the second resonance

Author

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

Subjects
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.

Published
1976

31. Photoproduction of negative pions on a polarized neutron target in the resonance region

Author

W. Meyer, D. Menze, O. Kaul, E. Hilger, K.H. Althoff, V. Kadansky, H. Herr, H. Beckschulze, J. DeWire, and R. Conrad

Subjects
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.

Published
1975

32. Evidence for a spin-1 gluon in three-jet events

Author

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

Subjects
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.

Published
1980

33. Energy scan for narrow states in e+e− annihilation at C.M. energies between 29.90 and 31.46 GeV

Author

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

Subjects
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

34. Photoproduction of pions on polarized protons and neutrons in the second resonance region

Author

K. Königsmann, V. Kadansky, O. Kaul, H. Schüller, K.H. Althoff, T. Miczaika, M. Gies, D. Menze, T. Yamaki, H. Herr, and W. Meyer

Subjects
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.

Published
1977

35. Photoproduction of π+ mesons on polarized protons at photon energies between 0.5 and 2.2 GeV

Author

U. Opara, W. Hoffmann, V. Kadansky, K.H. Althoff, D. Menze, W. J. Schwille, H. Herr, W. Schulz, P. Feller, and F.J. Schittko

Subjects
Cryostat, Physics, Nuclear and High Energy Physics, Photon, Meson, media_common.quotation_subject, Nuclear Theory, Electron, Asymmetry, Synchrotron, law.invention, Nuclear physics, Pion, law, High Energy Physics::Experiment, Neutron, Atomic physics, Nuclear Experiment, media_common
Abstract

The target asymmetry T = (σ↑ − σ↓)/(σ↑ + σ↓) for the reaction γp → π+n has been measured at the Bonn 2.5 GeV electron synchrotron for a pion c.m. angle of 40° and γ energies between 0.5 and 2.2 GeV. Butanol was used as the target material. About 35% of the protons could be polarized using the dynamic-polarization method in a continuous-flow cryostat operating at 1°K and 25 kG. The π+ mesons were detected in a magnetic-spectrometer system. Considerable structure in the asymmetry was observed.

Published
1973

36. A simple 3He cryostat for polarized targets

Author

V. Kadansky and H. Herr

Subjects
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.

Published
1974

37. e+ e− annihilation at high energies and search for thet-quark continuum contribution

Author

Brandelik, R., Braunschweig, W., Gather, K., Kadansky, V., Lübelsmeyer, K., Mättig, P., Martyn, H. -U., Peise, G., Rimkus, J., Sander, H. G., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Knop, G., Leu, P., Löhr, B., Wedemeyer, R., Wermes, N., Wollstadt, M., Cassel, D. G., Heyland, D., Hultschig, H., Joos, P., Koch, W., Koehler, P., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H. L., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Schliwa, M., Söding, P., Wiik, B. H., Wolff, G., Fohrmann, R., Holder, M., Poelz, G., Ringel, J., Römer, O., Rüsch, R., Schmüser, P., Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Pevsner, A., Sedgbeer, J., Yarker, S., Youngman, C., Barlow, R. J., Cashmore, R. J., Illingworth, J., Ogg, M., Roe, B., Salmon, G. L., Bell, K. W., Chinowsky, W., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Saxon, D. H., Woodworth, P. L., Eisenberg, Y., Karshon, U., Revel, D., Ronat, E., Shapira, A., Freeman, J., Lecomte, P., Meyer, T., Wu, Sau Lan, and Zobernig, G.

Abstract

Measurements ofR, sphericity and thrust are presented for c.m. energies between 12 and 31.6 GeV. A possible contribution of at " continuum can be ruled out for c.m. energies between 16 and 31 GeV.

Published
1980
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38. Sales call reluctance: What causes it, and how you can conquer it.

Author

Kadansky, Connie

Abstract

The article discusses the causes and methods of overcoming sales call reluctance. It tackles the three sources of call reluctance which include hereditary influences, personality predispositions and networking with others who experience call reluctance. It also offers recommendations for successful selling such as determining prospective clients, initiating contact with prospective clients and presenting products and services to clients. INSET: 12 types of sales call reluctance.

Published
2012

39. Tasso results on e+ e- annihilation between 13 and 31.6 GEV and evidence for three jet events

Author

Brandelik, R., Braunschweig, W., Gather, K., Kadansky, V., Lübelsmeyer, K., Mättig, P., Martyn, H., Peise, G., Rimkus, J., Sander, H., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H., Hartmann, H., Hilger, E., Knop, G., Korbach, W., Leu, P., Löhr, B., Roth, F., Rühmer, W., Wedemeyer, R., Wermes, N., Wollstadt, M., Bühring, R., Fohrmann, R., Heyland, D., Hultschig, H., Joos, P., Koch, W., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Schliwa, M., Söding, P., Wiik, B., Wolf, G., Holder, M., Poelz, G., Ringel, J., Römer, O., Rüsch, R., Schmüser, P., Binnie, D., Dornan, P., Downie, N., Garbutt, D., Jones, W., Lloyd, S., Pandoulas, D., Pevsner, A., Sedgebeer, J., Yarker, S., Youngman, C., Barlow, R., Cashmore, R., Illingworth, J., Ogg, M., Salmon, G., Bell, K., Chinowsky, W., Foster, B., Hart, J., Proudfoot, J., Quarrie, D., Saxon, D., Woodworth, P., Eisenberg, Y., Karshon, U., Kogan, E., Revel, D., Ronat, E., Shapira, A., Freeman, J., Lecomte, P., Meyer, T., Wu, S., Zobernig, G., and 0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum

Subjects
550 - Earth sciences
Published
1979

40. EVIDENCE FOR PLANAR EVENTS IN E+E- ANNIHILATION AT HIGH-ENERGIES

Author

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

Subjects
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

41. The hadronic final state in $e^{+}e^{-}$ annihilation at c.m. energies of 13, 17 and 27.4 GeV

Author

Cashmore, R. J., Brandelik, R., Sander, H. G., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Braunschweig, W., Knop, G., Korbach, W., Lohr, B., Roth, F., Ruhmer, W., Wedemeyer, R., Wermes, N., Wollstadt, M., Buhring, R., Heyland, D., Gather, K., Hultschig, H., Joos, P., Koch, W., Kotz, U., Kowalski, H., Ladage, A., Luke, D., Lynch, H. L., Mikenberg, G., Notz, D., Jaax, B., Pyrlik, J., Riethmuller, R., Schliwa, M., Soding, P., Wiik, B. H., Wolf, G., Fohrmann, R., Poelz, G., Ringel, J., Romer, O., Kadansky, V., Rusch, R., Schmueser, Peter, Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Youngman, C., Lubelsmeyer, K., Barlow, Roger J., Illingworth, J., Ogg, M., Salmon, G. L., Bell, Kenneth Watson, Chinowsky, W., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Martyn, H. U., Saxon, D. H., Woodworth, P. L., TASSO Collaboration, Peise, G., and Rimkus, J.

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, 13.0: 17.0: 27.4 GEV-CM, High Energy Physics::Lattice, DESY PETRA STOR, DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE, HADRON: ELECTROPRODUCTION, MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION [HADRON], TASSO, ENERGY DEPENDENCE: TOTAL CROSS SECTION, DIFFERENTIAL CROSS SECTION [ENERGY DEPENDENCE], ELECTROPRODUCTION: HADRON, Nuclear Experiment, ENERGY DEPENDENCE [TOTAL CROSS SECTION], TOTAL CROSS SECTION: ENERGY DEPENDENCE, HADRON [ELECTROPRODUCTION], JET [ELECTROPRODUCTION], COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, ANNIHILATION: ELECTRON POSITRON, TRANSVERSE MOMENTUM: DIFFERENTIAL CROSS SECTION, JET: SPHERICITY, RATIO [TOTAL CROSS SECTION], SPHERICITY [JET], ELECTRON POSITRON: COLLIDING BEAMS, ONE-PARTICLE: SPECTRUM, ELECTRON POSITRON [ANNIHILATION], SPECTRUM: ONE-PARTICLE, 17.0: 27.4 GEV-CM [13.0], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], MULTIPLE PRODUCTION [HADRON], ENERGY DEPENDENCE: DIFFERENTIAL CROSS SECTION, RATIO: TOTAL CROSS SECTION, TOTAL CROSS SECTION [RATIO], TRANSVERSE MOMENTUM [DIFFERENTIAL CROSS SECTION], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, DIFFERENTIAL CROSS SECTION: TRANSVERSE MOMENTUM, TOTAL CROSS SECTION [ENERGY DEPENDENCE], TOTAL CROSS SECTION: RATIO, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, Particle Physics - Phenomenology, ONE-PARTICLE [SPECTRUM], JET: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], High Energy Physics::Phenomenology, MULTIPLICITY, HADRON: MULTIPLE PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION], SPECTRUM [ONE-PARTICLE], High Energy Physics::Experiment, DIFFERENTIAL CROSS SECTION [TRANSVERSE MOMENTUM], ELECTRON POSITRON: ANNIHILATION
Abstract

10 pp. (1979)., Results on the hadronic final state in e/sup +/e/sup -/ annihilation at 13, 17 and 27.4 GeV are presented. There is no compelling evidence for the existence of the t quark in these data, which are in general agreement with a simple quark parton model. Some tentative indications of QCD effects are observed in the p/sub T//sup 2/ distributions.

Published
1979
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42. COMPARISON OF E+E- ANNIHILATION WITH QCD AND DETERMINATION OF THE STRONG COUPLING-CONSTANT

Author

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

Subjects
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

43. PRODUCTION AND PROPERTIES OF THE TAU-LEPTON IN E+E- ANNIHILATION AT CM ENERGIES FROM 12-GEV TO 31.6-GEV

Author

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

Subjects
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

44. Energy scan for narrow states in $e^+$$e^−$ annihilation at C.M. energies between 29.90 and 31.46 $GeV$

Author

Braunschweig, W., Gather, K., Kadansky, V., Lübelsmeyer, K., Mättig, P., Martyn, H.-U., Peise, G., Rimkus, J., Sander, H. G., Schmitz, D., Schultz Von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Knop, G., Leu, P., Löhr, B., Wedemeyer, R., Wermes, N., Wollstadt, M., Cassel, D. G., Heyland, D., Hultschig, H., Joos, P., Koch, W., Koehler, P., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H. L., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Schliwa, M., Söding, P., Wiik, B. H., Wolf, G., Fohrmann, R., Holder, M., Poelz, G., Ringel, J., Römer, O., Rüsch, R., Schmüser, P., Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Sedgbeer, J., Yanker, S., Youngman, C., Barlow, R. J., Cashmore, R. J., Illingworth, J., Ogg, M., Roe, B., Salmon, G. L., Bell, K. W., Chinowsky, W., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Saxon, D. H., Woodworth, P. L., Eisenberg, Y., Karshon, U., Revel, D., Ronat, E., Shapira, A., Freeman, J., Lecomte, P., Meyer, T., Lan Wu, Sau, and Zobernig, G.

Abstract

Physics letters / B 88(1-2), 199 - 202 (1979). doi:10.1016/0370-2693(79)90145-X, Published by North-Holland Publ., Amsterdam

Published
1979
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45. EVIDENCE FOR CHARGED PRIMARY PARTONS IN E+E--]2 JETS

Author

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

46. K0-PRODUCTION IN E+E- ANNIHILATIONS AT 30 GEV CENTER OF MASS-ENERGY

Author

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

47. TEST OF QED IN E+E- ANNIHILATION AT ENERGIES BETWEEN 12 AND 31.6 GEV

Author

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

48. Two photon results from TASSO

Author

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

49. Properties of hadron final states in e+e- annihilation at 13 GeV and 17 GeV center of mass energies

Author

Brandelik, R., Braunschweig, W., Gather, K., Jaax, B., Kadansky, V., Lübelsmeyer, K., Martyn, H., Peise, G., Rimkus, J., Sander, H., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H., Hartmann, H., Hilger, E., Hillen, W., Knop, G., Korbach, W., Löhr, B., Roth, F., Rühmer, W., Wedemeyer, R., Wermes, N., Wollstadt, M., Bühring, R., Heyland, D., Hultschig, H., Joos, P., Koch, W., Kötz, U., Kowalski, H., Ladage, A., Lüke, D., Lynch, H., Mikenberg, G., Notz, D., Pyrlik, J., Riethmüller, R., Schliwa, M., Söding, P., Wiik, B., Wolf, G., Fohrmann, R., Poelz, G., Ringel, J., Römer, O., Rüsch, R., Schmüser, P., Binnie, D., Dornan, P., Downie, N., Garbutt, D., Jones, W., Lloyd, S., Pandoulas, D., Youngman, C., Barlow, R., Cashmore, R., Illingworth, J., Ogg, M., Salmon, G., Bell, K., Chinowsky, W., Foster, B., Hart, J., Proudfoot, J., Quarrie, D., Saxon, D., Woodworth, P., Eisenberg, Y., Karshon, U., Kogan, E., Revel, D., Ronat, E., Shapira, A., Freeman, J., Lecomte, P., Meyer, T., Wu, S., Zobernig, G., and 0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum

Subjects
550 - Earth sciences
Published
1979

50. CHARGED PION, KAON, PROTON AND ANTIPROTON PRODUCTION IN HIGH-ENERGY E+E- ANNIHILATIONS

Author

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

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