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1. Experimental determination of the complete spin structure for anti-proton + proton -> anti-\Lambda + \Lambda at anti-proton beam momentum of 1.637 GeV/c

Author

The PS185 collaboration, Paschke, K . D., Quinn, B., Berdoz, A., Franklin, G. B., Khaustov, P., Meyer, C. A., Bradtke, C., Gehring, R., Goertz, S., Harmsen, J., Meier, A., Meyer, W., Radtke, E., Reicherz, G., Dutz, H., Pluckthun, M., Schoch, B., Dennert, H., Eyrich, W., Hauffe, J., Metzger, A., Moosburger, M., Stinzing, F., Wirth, St., Fischer, H., Franz, J., Heinsius, F. H., Kriegler, E., Schmitt, H., Bunker, B., Hertzog, D., Jones, T., Tayloe, R., Broders, R., Geyer, R., Kilian, K., Oelert, W., Rohrich, K., Sachs, K., Sefzick, T., Bassalleck, B., Eilerts, S., Fields, D. E., Kingsberry, P., Lowe, J., Stotzer, R., Johansson, T., and Pomp, S.

Subjects
Nuclear Experiment
Abstract

The reaction anti-proton + proton -> anti-\Lambda + \Lambda -> anti-proton + \pi^+ + proton + \pi^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of \Lambda/anti-\Lambda decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-\Lambda + \Lambda near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured., Comment: To be published in Phys. Rev. C. Tables of results (i.e. Ref. 24) are available at http://www-meg.phys.cmu.edu/~bquinn/ps185_pub/results.tab 24 pages, 16 figures

Published
2006
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2. Measurement of Spin Transfer Observables in Antiproton-Proton -> Antilambda-Lambda at 1.637 GeV/c

Author

Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Hauffe, J., Heinsius, F. H., Hertzog, D., Johansson, T., Jones, T., Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C. A., Meyer, W., Moosburger, M., Oelert, W., Paschke, K. D., Plückthun, M., Pomp, S., Quinn, B., Radtke, E., Reicherz, G., Röhrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzick, T., Stinzing, F., Stotzer, R., Tayloe, R., and Wirth, St.

Subjects
Nuclear Experiment
Abstract

Spin transfer observables for the strangeness-production reaction Antiproton-Proton -> Antilambda-Lambda have been measured by the PS185 collaboration using a transversely-polarized frozen-spin target with an antiproton beam momentum of 1.637 GeV/c at the Low Energy Antiproton Ring at CERN. This measurement investigates observables for which current models of the reaction near threshold make significantly differing predictions. Those models are in good agreement with existing measurements performed with unpolarized particles in the initial state. Theoretical attention has focused on the fact that these models produce conflicting predictions for the spin-transfer observables D_{nn} and K_{nn}, which are measurable only with polarized target or beam. Results presented here for D_{nn} and K_{nn} are found to be in disagreement with predictions from existing models. These results also underscore the importance of singlet-state production at backward angles, while current models predict complete or near-complete triplet-state dominance., Comment: 5 pages, 3 figures

Published
2002

3. Measurement of spin-transfer observables in p(bar)p->Lambda(bar) Lambda at 1.637 GeV/c

Author

Bassalleck, B., Berdoz, A., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Hauffe, J., Heinsius, F. H., Hertzog, D., Bradtke, R. O., Johansson, T., Jones, T., Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, A. V., Meier, A., Metzger, A., Meyer, C. A., Bröders, R., Meyer, W., Moosburger, M., Oelert, W., Paschke, K. D., Plückthun, M., Pomp, S., Quinn, B., Radtke, E., Reicherz, G., Röhrich, K., Bunker, B., Sachs, K., Schmitt, H., Schoch, B., Sefzick, N. Y., Stinzing, F., Stotzer, R., Tayloe, R., Wirth, St., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., and Fields, D.

Subjects
ddc:550
Published
2002

4. Observables in high-statistics measurements of the reaction $\overline{p}p$ --> $\overline{\Lambda}\Lambda$

Author

Barnes, P D, Birien, P, Breunlich, W H, Bröders, R, Dennert, H, Diebold, G, Dutty, W, Eisenstein, R A, Eyrich, W, Fischer, H, Von Frankenberg, R, Franklin, G, Franz, J, Geyer, R, Hamann, N H, Hauffe, J, Hertzog, D W, Hofmann, A, Johansson, T, Kilian, K, Kirsch, M, Kraft, R A, Nägele, N, Oelert, Walter, Ohlsson, S, Quinn, B, Röhrich, K, Rössle, E, Sachs, K, Schledermann, H, Schmitt, H, Schumacher, R, Sefzick, T, Sehl, G, Seydoux, J, Stinzing, F, Tayloe, R, Todenhagen, R, Zeps, V, and Ziolkowski, M

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

Associated strangeness production was studied in the $\bar{\rm p}{\rm p}\rightarrow \bar{\Lambda}\Lambda \rightarrow \bar{\rm p}\pi^{+} {\rm p}\pi^{-}$ reaction at the CERN antiproton facility LEAR using the experimental set-up of PS185. Results from two high--statistics measurements at incident antiproton momenta of $1.642$ and 1.918 GeV/$c$ are reported. Approximately 40 000 reconstructed events at each momentum have allowed us to measure the total and differential cross-sections, the spin polarizations, the spin correlations, and the singlet fractions of the $\Lambda\bar{\Lambda}$ pair. Since the decays of both the $\Lambda$ and the $\bar{\Lambda}$ were simultaneously observed in the same detector, we are able to provide upper limits on CP and CPT violation phenomena in the weak interaction.

Published
1996

5. Depolarization and spin transfer in anti-p p -> anti-Lambda Lambda with a polarized target

Author

Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Hamann, N, Harmsen, J, Hauffe, J, Heinsius, F, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Meyer, C, Meyer, W, Moosburger, M, Oelert, W, Paschke, K, Pluckthun, M, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Pomp, S, Quinn, B, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, Wirth, S, Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Hamann, N, Harmsen, J, Hauffe, J, Heinsius, F, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Meyer, C, Meyer, W, Moosburger, M, Oelert, W, Paschke, K, Pluckthun, M, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Pomp, S, Quinn, B, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, and Wirth, S

Published
2004

6. Depolarization and spin transfer in anti_p+p->anti_Lambda+Lambda with a polarized target

Author

Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Haman, N., Harmsen, J., Hauffe, J., Heinsius, F., Hertzog, D., Johansson, Tord, Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C., Moosburger, M., Oelert, W., Paschke, K., Pluecktun, M., Pomp, S., Quinn, B., Röhrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzik, T., Stinzing, F., Stotzer, R., Tayloe, R., Wirth, St., Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Haman, N., Harmsen, J., Hauffe, J., Heinsius, F., Hertzog, D., Johansson, Tord, Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C., Moosburger, M., Oelert, W., Paschke, K., Pluecktun, M., Pomp, S., Quinn, B., Röhrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzik, T., Stinzing, F., Stotzer, R., Tayloe, R., and Wirth, St.

Published
2004
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7. Spinobservable in der Strangenesserzeugung der Reaktion $\overline{p}p \rightarrow \overline{\Lambda}\Lambda$

Author

Bröders, R. W.

Abstract

In der vorliegenden Arbeit wurde die Reaktion $\overline{p}p \rightarrow \overline{\Lambda} \Lambda \rightarrow \overline{p} \pi^{+} p\pi^{-}$ im Rahmen des Experiments PS185 bei den bisher höchsten Einschußimpulsen von 1.949 GeV/c und 1.992 GeV/c untersucht. Dabei wurde im Verlauf der Auswertung ein neues Verfahren zur Driftkammeranalyse entwickelt. Bei den Observablen der Reaktion zeigten sich Übereinstimmungen mit früheren Messungen bei niederenStrahlimpulsen, aber auch Abweichungen. Mit der in dieser Arbeit vorgestellten Driftkammeranalyse (Kapitel [3]) ist es zum ersten Male möglich, den Ionisationsort innerhalb einer Kammerzelle genau zu bestimmen. Hiermit läßt sich auch bei Spuren mit schräger Inzidenz zur Kammerebene noch eine ausreichende Anzahl von Treffern zur Spurrekonstruktion finden, was zu einer Verbesserung der Winkelakzeptanz der Kammern führt. Dabei wurde eine einfache Methode aufgezeigt, per Simulation bestimmte Eichtabellen anzupassen und geometrische Sollabweichungen der Kammern zu korrigieren. Durch Monte-Carlo Untersuchungen und eine genaue Analyse von Target- und Magnetkorrekturen konnte durch das Ausschließen widersprüchlicher Ereignisse bei der Baryonenidentifikation für beide Strahlimpulse ein 'gereinigter' Datensatz ermittelt werden (Kapitel [4.2] [4.3]), mit dem eine Bestimmung der spinabhängigen Observablen möglich war. Der in früheren Arbeiten beobachtete Rückwärtsanstieg für den differentiellen Wirkungsquerschnitt tritt bei den hier betrachteten Strahlimpulsen auch in den 'gereinigten' Datensätzen signifikant hervor (Kapitel [4.5]. Dieser Rückwärtsanstieg könnte auf einen neuen Reaktionsmechanismus und/oder Nukleon Strukturen hinweisen. Einen möglichen Erklärungsversuch im Quarkbild bieten Modelle, in welchen räumlich ausgedehnte 'cli-quarks' als elementare Konstituenten von Baryonen zusätzlich zu den punktförmigen Quarks im 'constituent scattering model' verwendet werden [KRO89]. Für der Bestimmung des totalen Wirkungsquerschnitts konnten dabei leichte, auswertespezifische Abweichungen zu früheren Messungen festgestellt und erklärt werden (Kapitel [4.4]). Im Rahmen bisheriger Messungen zeigt sich keine [...]

Published
1995

8. Measurement of Spin Transfer Observables in anti-p p -> anti-Lambda Lambda at 1.637 GeV/c

Author

Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, F, Franz, J, Gehring, R, Geyer, R, Goertz, S, Harmsen, J, Hauffe, J, Heinsius, F.H, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Meyer, C.A, Meyer, W, Moosburger, M, Oelert, W, Paschke, K.D, Pluckthun, M, Pomp, S, Qunn, B, Radtke, E, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, Wirth, S, Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, F, Franz, J, Gehring, R, Geyer, R, Goertz, S, Harmsen, J, Hauffe, J, Heinsius, F.H, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Meyer, C.A, Meyer, W, Moosburger, M, Oelert, W, Paschke, K.D, Pluckthun, M, Pomp, S, Qunn, B, Radtke, E, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, and Wirth, S

Published
2002

9. Untersuchung von Gasparametern und Hochrateneffekten einer Influenzdriftkammer

Author

Bröders, R. W.

Abstract

Die Testmessungen am Bonner Elektronen-Synchrotron und am Erlanger Tandembeschleuniger haben gezeigt, daß mit der asymmetrischen Influenzdriftkammer mit FADC-Auslese ein Vertexdetektor zu Verfügung steht, der eine hohe Ortsauflösung von $\Delta_{x_\theta = 0}$ = 26 pm (Kapitel 3.4) mit einer sehr guten Ratenverträglichkeit von 2 • 10$^{6}$ Teichen/mrn$^{2}$ $\cdot$ s (Kapitel 5.5) und geringer Massenbelegung (Kapitel 2.1) verbindet. Es konnte gezeigt werden, daß sich die Ortsauflösung bei schr igen Spuren und FADC-Auslese nicht durch den Zusatz von Athanol zum Kammergas verbessern laßt (Kapitel 4). Eine Möglichkeit zu einer Verbesserung der winkelabhängigen Ortsauflösung besteht daher im Einsatz von FADC's mit einer höheren Abtastrate als 100 MHz (vgl. Kapitel 2.4). Aufgrund der derzeitigen Entwicklung scheint es möglich zu sein, FADC's mit einer 5 mal höheren Abtastrate herzustellen. Damit ließe sich die Verschlechterung der Auflösung von schrägen Spuren auf $\Delta_{x \theta}$/1$^\circ$ = 0.5 $\mu$m begrenzen. Wie im zweiten Teil dieser Arbeit dargelegt wurde (Kapitel 5), erreicht manmit der IDC selbst bei Raten von 3 • 10$^{6}$ Teichen/mm$^{2}$ s noch eine Ortsauflösung im Bereich von $\Delta_{x \theta=0}$ = 40 pm. Aufgrund des selbststabilisierenden Verhaltens der Kammer konnte sie selbst bei Raten von 20 • 10$^{6}$ Teichen/mm$^{2}$ $\cdot$ s ohne Störungen betrieben werden.Die asymmetrische Influenzdriftkammer erfüllt damit alle Forderungen, die an das Experiment PS 185 gestellt werden. Mit ihr steht darüber hinaus auch ein idealer Vertexdetektor bei anderen Experimenten der Mittelenergiephysik zur Verfügung.

Published
1992

10. Experimental determination of the complete spin structure forp¯p→Λ¯Λatpp¯=1.637GeV/c

Author

Paschke, K. D., primary, Quinn, B., additional, Berdoz, A., additional, Franklin, G. B., additional, Khaustov, P., additional, Meyer, C. A., additional, Bradtke, C., additional, Gehring, R., additional, Goertz, S., additional, Harmsen, J., additional, Meier, A., additional, Meyer, W., additional, Radtke, E., additional, Reicherz, G., additional, Dutz, H., additional, Plückthun, M., additional, Schoch, B., additional, Dennert, H., additional, Eyrich, W., additional, Hauffe, J., additional, Metzger, A., additional, Moosburger, M., additional, Stinzing, F., additional, Wirth, St., additional, Fischer, H., additional, Franz, J., additional, Heinsius, F. H., additional, Kriegler, E., additional, Schmitt, H., additional, Bunker, B., additional, Hertzog, D., additional, Jones, T., additional, Tayloe, R., additional, Bröders, R., additional, Geyer, R., additional, Kilian, K., additional, Oelert, W., additional, Röhrich, K., additional, Sachs, K., additional, Sefzick, T., additional, Bassalleck, B., additional, Eilerts, S., additional, Fields, D. E., additional, Kingsberry, P., additional, Lowe, J., additional, Stotzer, R., additional, Johansson, T., additional, and Pomp, S., additional

Published
2006
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11. Depolarization and spin transfer in with a polarized target

Author

Bassalleck, B, primary, Berdoz, A, additional, Bradtke, C, additional, Bröders, R, additional, Bunker, B, additional, Dennert, H, additional, Dutz, H, additional, Eilerts, S, additional, Eyrich, W, additional, Fields, D, additional, Fischer, H, additional, Franklin, G, additional, Franz, J, additional, Gehring, R, additional, Geyer, R, additional, Goertz, S, additional, Hamann, N, additional, Harmsen, J, additional, Hauffe, J, additional, Heinsius, F, additional, Hertzog, D, additional, Johansson, T, additional, Jones, T, additional, Khaustov, P, additional, Kilian, K, additional, Kingsberry, P, additional, Kriegler, E, additional, Lowe, J, additional, Meier, A, additional, Metzger, A, additional, Meyer, C, additional, Meyer, W, additional, Moosburger, M, additional, Oelert, W, additional, Paschke, K, additional, Plückthun, M, additional, Pomp, S, additional, Quinn, B, additional, Reicherz, G, additional, Röhrich, K, additional, Sachs, K, additional, Schmitt, H, additional, Schoch, B, additional, Sefzick, T, additional, Stinzing, F, additional, Stotzer, R, additional, Tayloe, R, additional, and Wirth, St, additional

Published
2004
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12. Measurement of Spin-Transfer Observables inp¯p→Λ¯Λat1.637GeV/c

Author

Bassalleck, B., primary, Berdoz, A., additional, Bradtke, C., additional, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Dutz, H., additional, Eilerts, S., additional, Eyrich, W., additional, Fields, D., additional, Fischer, H., additional, Franklin, G., additional, Franz, J., additional, Gehring, R., additional, Geyer, R., additional, Goertz, S., additional, Harmsen, J., additional, Hauffe, J., additional, Heinsius, F. H., additional, Hertzog, D., additional, Johansson, T., additional, Jones, T., additional, Khaustov, P., additional, Kilian, K., additional, Kingsberry, P., additional, Kriegler, E., additional, Lowe, J., additional, Meier, A., additional, Metzger, A., additional, Meyer, C. A., additional, Meyer, W., additional, Moosburger, M., additional, Oelert, W., additional, Paschke, K. D., additional, Plückthun, M., additional, Pomp, S., additional, Quinn, B., additional, Radtke, E., additional, Reicherz, G., additional, Röhrich, K., additional, Sachs, K., additional, Schmitt, H., additional, Schoch, B., additional, Sefzick, T., additional, Stinzing, F., additional, Stotzer, R., additional, Tayloe, R., additional, and Wirth, St., additional

Published
2002
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13. Measurement of spin observables in exclusive production

Author

Paschke, K., primary, Barnes, P., additional, Bassalleck, B., additional, Berdoz, A., additional, Bradtke, C., additional, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Dutz, H., additional, Eisenstein, R.E., additional, Eyrich, W., additional, Fischer, H., additional, Franklin, G., additional, Franz, J., additional, Gehring, R., additional, Geyer, R., additional, Goertz, S., additional, Harmsen, J., additional, Hauffe, J., additional, Hertzog, D., additional, Johansson, T., additional, Jones, T., additional, Khaustov, P., additional, Kingsberry, P., additional, Kilian, K., additional, Kriegler, E., additional, Lowe, J., additional, Meier, A., additional, Metzger, A., additional, Meyer, C.A., additional, Meyer, W., additional, Moosburger, M., additional, Oelert, W., additional, Quinn, B., additional, Plückthun, M., additional, Pomp, S., additional, Radtke, E., additional, Reicherz, G., additional, Röhrich, K., additional, Sachs, K., additional, Schmitt, H., additional, Schoch, B., additional, Sefzick, T., additional, Stinzing, F., additional, Tayloe, R., additional, Traneus, E., additional, Wirth, St., additional, and Wolfe, D., additional

Published
2001
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14. A measurement of the cross section at beam momenta around 1.6 GeV/c

Author

Barnes, P.D., primary, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Eisenstein, R.E., additional, Eyrich, W., additional, Fischer, H., additional, Franklin, G., additional, Franz, J., additional, Geyer, R., additional, Harris, P., additional, Hauffe, J., additional, Hertzog, D., additional, Johansson, T., additional, Jones, T., additional, Kilian, K., additional, Kraft, R.A., additional, Meyer, C., additional, Oelert, W., additional, Pomp, S., additional, Quinn, B., additional, Röhrich, K., additional, Rössle, E., additional, Sachs, K., additional, Schmitt, H., additional, Schumacher, R., additional, Sefzick, T., additional, Stinzing, F., additional, Tayloe, R., additional, Todenhagen, R., additional, Traneus, E., additional, and Wirth, S., additional

Published
2001
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15. Hyperon polarisation in the reaction

Author

Pomp, S., primary, Barnes, P.D., additional, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Eisenstein, R.E., additional, Eyrich, W., additional, Fischer, H., additional, Franklin, G., additional, Franz, J., additional, Geyer, R., additional, Harris, P., additional, Hauffe, J., additional, Hertzog, D., additional, Johansson, T., additional, Jones, T., additional, Kilian, K., additional, Kraft, R.A., additional, Meyer, C., additional, Oelert, W., additional, Pomp, S., additional, Quinn, B., additional, Röhrich, K., additional, Rössle, E., additional, Sachs, K., additional, Schmitt, H., additional, Schumacher, R., additional, Sefzick, T., additional, Stinzing, F., additional, Tayloe, R., additional, Todenhagen, R., additional, Traneus, E., additional, and Wirth, S., additional

Published
2000
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16. Results from PS185

Author

Johansson, T., primary, Barnes, P.D., additional, Bassalleck, B., additional, Bradke, C., additional, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Dutz, H., additional, Eilerts, S., additional, Eisenstein, R.E., additional, Eyrich, W., additional, Fields, D., additional, Fischer, H., additional, Franklin, G., additional, Franz, J., additional, Gehring, R., additional, Geyer, R., additional, Goertz, S., additional, Harmsen, J., additional, Harris, P., additional, Hauffe, J., additional, Hertzog, D., additional, Johansson, T., additional, Jones, T., additional, Kilian, K., additional, Kingsberry, P., additional, Kriegler, E., additional, Köningsmann, K., additional, Lowe, J., additional, Kraft, R.A., additional, Meier, A., additional, Meyer, C.A., additional, Meyer, W., additional, Oelert, W., additional, Paschke, K., additional, Plücktum, M., additional, Pomp, S., additional, Quinn, B., additional, Radtke, E., additional, Reicherz, G., additional, Ruh, M., additional, Röhrich, K., additional, Rössle, E., additional, Sachs, K., additional, Schmitt, H., additional, Schumacher, R., additional, Sefzick, T., additional, Stinzing, F., additional, Stotzer, R., additional, Tayloe, R., additional, Todenhagen, R., additional, and Wirth, S., additional

Published
1999
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17. Antihyperon-hyperon production in p¯p annihilations near the reaction thresholds

Author

Johansson, T., primary, Barnes, P.D., additional, Birien, P., additional, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Diebold, G., additional, Dutty, W., additional, Eisenstein, R.E., additional, Eyrich, W., additional, Fischer, H., additional, Frankenberg, R.V., additional, Franklin, G., additional, Franz, J., additional, Geyer, R., additional, Hamann, N., additional, Harris, P., additional, Hauffe, J., additional, Hertzog, D., additional, Hofmann, A., additional, Hughes, S., additional, Johansson, T., additional, Jones, T., additional, Kilian, K., additional, Kirch, M., additional, Kraft, R.A., additional, McCrady, R., additional, Merryl, F., additional, Meyer, C., additional, Oelert, W., additional, Ohlsson, S., additional, Pomp, S., additional, Quinn, B., additional, Reimer, P.E., additional, Röhrich, K., additional, Sachs, K., additional, Schmitt, H., additional, Schumacher, R., additional, Sefzick, T., additional, Sehl, G., additional, Seydoux, J., additional, Schledermann, H., additional, Stinzing, F., additional, Rössle, E., additional, Tayloe, R., additional, Todenhagen, R., additional, Traneus, E., additional, Zeps, V., additional, and Ziolkowski, M., additional

Published
1997
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18. Observables in high-statistics measurements of the reactionp¯p→Λ¯Λ

Author

Barnes, P. D., primary, Diebold, G., additional, Franklin, G., additional, Quinn, B., additional, Schumacher, R., additional, Seydoux, J., additional, Zeps, V., additional, Birien, P., additional, Dutty, W., additional, Fischer, H., additional, Franz, J., additional, Rössle, E., additional, Schledermann, H., additional, Schmitt, H., additional, Todenhagen, R., additional, Breunlich, W., additional, Nägele, N., additional, Bröders, R., additional, Frankenberg, R. v., additional, Kilian, K., additional, Oelert, W., additional, Röhrich, K., additional, Sachs, K., additional, Sefzick, T., additional, Sehl, G., additional, Ziolkowski, M., additional, Eisenstein, R. A., additional, Hertzog, D., additional, Tayloe, R., additional, Dennert, H., additional, Eyrich, W., additional, Geyer, R., additional, Hauffe, J., additional, Hofmann, A., additional, Kirsch, M., additional, Kraft, R. A., additional, Stinzing, F., additional, Hamann, N., additional, Johansson, T., additional, and Ohlsson, S., additional

Published
1996
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19. The use of drift chamber signals as a fast trigger

Author

Dahmen, M., primary, Bröders, R., additional, Decker, G., additional, Kilian, K., additional, Kurtenbach, A., additional, Lippert, Ch., additional, Oelert, W., additional, Roderburg, E., additional, Sehl, G., additional, Steinkamp, O., additional, Stratmann, R., additional, Walsh, S., additional, and Zióklkowski, M., additional

Published
1992
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21. Antihyperon-Hyperon Production in the Threshold Region at LEAR

Author

Barnes, P. D., Breunlich, W., Bröders, R., Dennert, H., Eisenstein, R. A., Eyrich, W., Fischer, H., Franklin, G., Franz, J., Geyer, R., Harris, P., Hauffe, J., Hertzog, D., Hughes, S., Jones, T., Johansson, T., Kilian, K., Curtis Meyer, Moosburger, M., Oelert, W., Ohlsson, S., Pomp, S., Quinn, B., Rohrich, K., Rössle, E., Sachs, K., Schmitt, H., Schuhmacher, R., Sefzick, T., Stinzing, F., Tayloe, R., Todenhagen, R., Urban, H. J., Wirth, H., Zeps, V., and Ziolkowski, M.

22. Measurement of spin observables in exclusive p̄p → Λ̄Λ production

Author

Paschke, K., Barnes, P., Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eisenstein, R. E., Eyrich, W., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Hauffe, J., Hertzog, D., Tord Johansson, Jones, T., Khaustov, P., Kingsberry, P., Kilian, K., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C. A., Meyer, W., Moosburger, M., Oelert, W., Quinn, B., Plückthun, M., Pomp, S., Radtke, E., Reicherz, G., Röhrich, G. K., Sachs, K., Schmitt, H., Schoch, B., Sefzick, T., Stinzing, F., Tayloe, R., Traneus, E., Wirth, St, and Wolfe, D.

23. Depolarization and spin transfer in <f><ovl type="bar" STYLE="S">p</ovl>p→<ovl type="bar" STYLE="S">Λ</ovl>Λ</f> with a polarized target

Author

Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Hamann, N., Harmsen, J., Hauffe, J., and Heinsius, F.

Subjects
*NUCLEAR reactions, *MUON depolarization, *PROTON transfer reactions, *MESONS
Abstract

The reaction pp→ΛΛ was examined by LEAR experiment PS185/3 at 1.525 and 1.640 GeV/c. The proton target was transversely polarized in order to measure the depolarization and spin transfer. Theoretical calculations of Dnn, the component of the depolarization normal to the production plane, differ greatly according to whether quark-gluon or meson-exchange models are employed. The measured Dnn and spin transfer Knn appear to be inconsistent with the specific models cited. [Copyright &y& Elsevier]

Published
2004
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