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348 results on '"Georgi, J."'

5. The pK0\Sigma+ final state in proton-proton collisions

Author

Collaboration, COSY-TOF, Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K-Th., Clement, H., Dietrich, J., Doroshkevich, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hesselbarth, D., Jäger, H., Jakob, B., Jäkel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kreß, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Meyer, W., Michel, P., Möller, K., Morsch, H. P., Mörtel, H., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, Ch., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schönmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzing, F., Steinke, M., Sun, G. Y., Teufel, A., Ullrich, W., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirthand, S., Wüstner, P., and Zupranski, P.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

This paper reports results from a study of the reaction pp->pK0\Sigma+ at beam momenta of p_{beam} = 2950, 3059, and 3200 MeV/c (excess energies of \epsilon= 126, 161, and 206 MeV). Total cross sections were determined for all energies; a set of differential cross sections (Dalitz plots; invariant mass spectra of all two-body subsystems; angular distributions of all final state particles; distributions in helicity and Jackson frames) are presented for \epsilon= 161 MeV. The total cross sections are proportional to the volume of available three-body phase-space indicating that the transition matrix element does not change significantly in this range of excess energies. It is concluded from the differential data that the reaction proceeds dominantly via the N(1710)P_{11} and/or N(1720)P_{13} resonance(s); N(1650)S_{11} and \Delta(1600)P_{33} could also contribute., Comment: 15 pages, 10 figures

Published
2012
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6. Production of Lambda and Sigma^0 hyperons in proton-proton collisions

Author

Collaboration, The COSY-TOF, Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K-Th., Clement, H., Dietrich, J., Doroshkevich, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hesselbarth, D., Jäger, H., Jakob, B., Jäkel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kreß, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Meyer, W., Michel, P., Möller, K., Morsch, H. P., Mörtel, H., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, Ch., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schönmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzig, F., Steinke, M., Sun, G. Y., Teufel, A., Ullrich, W., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirth, S., Wüstner, P., and Zupranski, P.

Subjects
Nuclear Experiment
Abstract

This paper reports results on simultaneous measurements of the reaction channels pp -> pK+\Lambda and pp -> pK+\Sigma^0 at excess energies of 204, 239, and 284 MeV (\Lambda) and 127, 162, and 207 MeV (\Sigma^0). Total and differential cross sections are given for both reactions. It is concluded from the measured total cross sections that the high energy limit of the cross section ratio is almost reached at an excess energy of only about 200 MeV. From the differential distributions observed in the overall CMS as well as in the Jackson and helicity frames, a significant contribution of interfering nucleon resonances to the \Lambda production mechanism is concluded while resonant \Sigma^0-production seems to be of lesser importance and takes place only through specific partial waves of the entrance channel. The data also indicate that kaon exchange plays a minor role in the case of \Lambda- but an important role for \Sigma^0-production. Thus the peculiar energy dependence of the \Lambda-to-\Sigma^0 cross section ratio appears in a new light as its explanation requires more than mere differences between the p\Lambda and the p\Sigma^0 final state interaction. The data provide a benchmark for theoretical models already available or yet to come., Comment: 18 pages, 10 figures; accepted by The European Physical Journal A (EPJ A)

Published
2010
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7. Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum

Author

Collaboration, COSY-TOF, AbdEl-Samad, S., Abdel-Bary, M., Brinkmann, K., Clement, H., Dietrich, J., Dorochkevitch, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Fanara, C., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hauffe, J., Hesselbarth, D., Jaeger, H., Jakob, B., Jaekel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kress, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Metzger, A., Meyer, W., Michel, P., Moeller, K., Moertel, H., Morsch, H. P., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, C., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schoenmeier, P., Schulte-Wissermann, M., Schroeder, W., Sefzick, T., Steinke, M., Stinzing, F., Sun, G., Teufel, A., Ullrich, W., Waechter, J., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirth, S., Wuestner, P., and Zupranski, P.

Subjects
Nuclear Experiment
Abstract

Hyperon production in the threshold region was studied in the reaction pp -> K+Lp using the time-of-flight spectrometer COSY-TOF. Exclusive data, covering the full phase-space, were taken at the three different beam momenta of p_beam=2.95, 3.20 and 3.30 GeV/c, corresponding to excess energies of epsilon=204, 285 and 316 MeV, respectively. Total cross-sections were deduced for the three beam momenta to be 23.9+/-0.8 +/-2.0 ub, 28.4+/-1.3 +/-2.2 ub and 35.0+/-1.3 +/-3.0 ub. Differential observables including Dalitz plots were obtained. The analysis of the Dalitz plots reveals a strong influence of the N(1650)-resonance at p_beam=2.95 GeV/c, whereas for the higher momenta an increasing relative contribution of the N(1710)- and/or of the N(1720)-resonance was observed. In addition, the pL-final-state interaction turned out to have a significant influence on the Dalitz plot distribution., Comment: accepted for publication at Physics Letters B; some minor text changes were done; also the scale of the ordinates of figure 9 has been changed

Published
2010
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8. Therapy with L-thyroxine and Omnadren after Cardiac Surgery. A Case Report

Author

Georgi J. Stoitsev, Veselin Gavrilov, Georgi Manchev, Boyan Markov, Valya Goranovska, Boris Tsankov, and Vassil Gegouskov

Subjects
anabolic metabolism, cardiac surgery, L-thyroxine, Medicine
Abstract

Background: Cardiopulmonary bypass in cardiac surgery produces systemic inflammatory response and catabolic state. Severe stress frequently causes abnormalities in thyroid hormones in the absence of primary thyroid disease, defined as sick euthyroid syndrome (SES).Materials and methods: Supplementation therapy with thyroid and anabolic hormones in combination with an adequate nutritional support has been used to improve outcome in critically ill patient after cardiac surgery.Results: Administration of thyroid and anabolic hormones significantly improved patient’s condition.Conclusions: Supplementation therapy with thyroid and anabolic hormones in combination with an adequate nutritional support could be used to improve hemodynamics, achieve transition to anabolic metabolism and enhance recovery, which could eventually help for a reduction in post-operative morbidity and mortality.

Published
2019
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9. Improved study of a possible Theta+ production in the pp -> p K0 sigma+ reaction with the COSY-TOF spectrometer

Author

collaboration, COSY-TOF, Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K. -Th., Castelijns, R., Clement, H., Dietrich, J., Dshemuchadse, S., Dorochkevitch, E., Eyrich, W., Ehrhardt, K., Erhardt, A., Freiesleben, H., Gast, W., Georgi, J., Gillitzer, A., Jaeger, H., Jaekel, R., Karsch, L., Kilian, K., Krapp, M., Kuhlmann, E., Lehmann, A., Morsch, H. P., Paul, N., Pinna, L., Pizzolotto, C., Ritman, J., Roderburg, E., Schadmand, S., Schoenmeier, P., Schulte-Wissermann, M., Schroeder, W., Sefzick, T., Teufel, A., Ucar, A., Ullrich, W., Wenzel, R., Wintz, P., Wuestner, P., and Zupranski, P.

Subjects
High Energy Physics - Experiment
Abstract

The pp -> p K0 Sigma+ reaction was investigated with the TOF spectrometer at COSY at 3.059 GeV/c incident beam momentum. The main objective was to clarify whether or not a narrow exotic S = +1 resnance, the Theta+ pentaquark, is populated at 1.53 GeV/c2 in the K0 p subsystem with a data sample of much higher statistical significance compared to the previously reported data in this channel. An analysis of these data does not confirm the existence of the Theta+ pentaquark. This is expressed as an upper limit for the cross section sigma (pp -> p K0 Sigma+) < 0.15 microbarn at the 95 percent confidence level., Comment: 11 pages, 5 figures

Published
2006
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10. Evidence for a narrow resonance at 1530 MeV/c2 in the K0 p - system of the reaction pp --> Sigma+ K0 p from the COSY-TOF experiment

Author

Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K. -Th., Clement, H., Doroshkevich, E., Drochner, M., Dshemuchadse, S., Erhardt, A., Eyrich, W., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Georgi, J., Gillitzer, A., Hesselbarth, D., Jaekel, R., Jakob, B., Karsch, L., Kilian, K., Koch, H., Kress, J., Kuhlmann, E., Marcello, S., Marwinski, S., Meier, R., Michel, P., Moeller, K., Moertel, H., Morsch, H. P., Paul, N., Pinna, L., Pizzolotto, C., Richter, M., Roderburg, E., Schoenmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzing, F., Sun, G. Y., Teufel, A., Ucar, A., Wagner, G. J., Wagnerc, M., Wilms, A., Wintz, P., Wirth, St., and Wuestner, P.

Subjects
High Energy Physics - Experiment
Abstract

The hadronic reaction pp --> Sigma+ K0 p was measured exclusively at a beam momentum of 2.95 GeV/c using the TOF detector at the COSY storage ring. A narrow peak was observed in the invariant mass spectrum of the K0 p subsystem at 1530 +- 5 MeV/c2 with a significance of 4 - 6 standard deviations, depending on background assumptions. The upper limit of 18 +- 4 MeV/c2 (FWHM) for its width is given by the experimental resolution. The corresponding total cross section is estimated to be about 0.4 +- 0.1(stat) +- 0.1(syst) microbarn. Since a resonance in this subsystem must have strangeness S = + 1 we claim it to be the Theta+ state for which very recently evidence was found in various experiments., Comment: 11 pages, 7 figures

Published
2004
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13. Certification of Standard Reference Material® 955d, Toxic Elements and Metabolites in Frozen Human Blood

Author

Yu, L.L., primary, Caceres, G.C., additional, Long, S.E., additional, Murphy, K.E., additional, Bryan Sallee, C.E., additional, Vetter, T.W., additional, Hagwood, C., additional, Franklin, M.A., additional, Castro Georgi, J., additional, Jarrett, J.M., additional, Jones, D.M., additional, Jones, R.L., additional, Li, Z., additional, Sommer, Y.L., additional, Tevis, D.S., additional, Wallon, K., additional, Ward, C.D., additional, Maras, M., additional, Erdahl, S., additional, Gilmer, C., additional, Wermers, M., additional, Woldeysus, H., additional, Mehigan, K.F., additional, Morrissette, M., additional, Palmer, C.D., additional, and Parsons, P.J., additional

Published
2020
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15. P404: PROGNOSTIC IMPACT OF CEBPA-MUTATIONAL SUBGROUPS IN ADULT AML – RESULTS OF A LARGE METAANALYSIS IN MORE THAN 1000 CEBPA-MUTANT PATIENTS

Author

Georgi, J.-A., primary, Stasik, S., additional, Kramer, M., additional, Röllig, C., additional, Haferlach, T., additional, Valk, P., additional, Linch, D., additional, Herold, T., additional, Duployez, N., additional, Taube, F., additional, Platzbecker, U., additional, Serve, H., additional, Baldus, C., additional, Müller-Tidow, C., additional, Haferlach, C., additional, Meggendorfer, M., additional, Koch, S., additional, Boertjes, E. L., additional, Hills, R. K., additional, Burnett, A., additional, Ehninger, G., additional, Metzeler, K., additional, Rothenberg-Thurley, M., additional, Dufour, A., additional, Dombret, H., additional, Pautas, C., additional, Fenwarth, L., additional, Bornhäuser, M., additional, Gale, R., additional, and Thiede, C., additional

Published
2022
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16. The pp → nK+Σ+ reaction at 2.95 GeV/c

Author

Abdel-Bary, M., Abdel-Samad, S., Bilger, R., Brinkmann, K-Th., Clement, H., Doroshkevich, E., Dshemuchadse, S., Erhardt, A., Eyrich, W., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Georgi, J., Gillitzer, A., Hesselbarth, D., Jakob, B., Karsch, L., Kilian, K., Koch, H., Kreß, J., Kuhlmann, E., Marcello, S., Marwinski, S., Mauro, S., Michel, P., Möller, K., Morsch, H. P., Naumann, L., Paul, N., Plettner, Ch., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schönmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzig, F., Steinke, M., Sun, G. Y., Teufel, A., Wagner, G. J., Wagner, M., Wilms, A., Wintz, P., Wirth, S., and The COSY-TOF Collaboration

Published
2012
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17. DEGRO 2004: 10. Jahreskongress der Deutschen Gesellschaft für Radioonkologie

Author

Wendt, Thomas G., Gademann, G., Pambor, C., Grießbach, I., von Specht, H., Martin, T., Baltas, D., Kurek, R., Röddiger, S., Tunn, U. W., Zamboglou, N., Eich, H. T., Staar, S., Gossmann, A., Hansemann, K., Semrau, R., Skripnitchenko, R., Diehl, V., Müller, R.-P., Sehlen, S., Willich, N., Rühl, U., Lukas, P., Dühmke, E., Engel, K., Tabbert, E., Bolck, M., Knaack, S., Annweiler, H., Krempien, R., Hoppe, H., Harms, W., Daeuber, S., Schorr, O., Treiber, M., Debus, J., Alber, M., Paulsen, F., Birkner, M., Bakai, A., Belka, C., Budach, W., Grosser, K.-H., Kramer, R., Kober, B., Reinert, M., Schneider, P., Hertel, A., Feldmann, H., Csere, P., Hoinkis, C., Rothe, G., Zahn, P., Alheit, H., Cavanaugh, S. X., Kupelian, P., Reddy, C., Pollock, B., Fuss, M., Roeddiger, S., Dannenberg, T., Rogge, B., Drechsler, D., Herrmann, T., Alberti, W., Schwarz, R., Graefen, M., Krüll, A., Rudat, V., Huland, H., Fehr, C., Baum, C., Glocker, S., Nüsslin, F., Heil, T., Lemnitzer, H., Knips, M., Baumgart, O., Thiem, W., Kloetzer, K.-H., Hoffmann, L., Neu, B., Hültenschmidt, B., Sautter-Bihl, M.-L., Micke, O., Seegenschmiedt, M. H., Köppen, D., Klautke, G., Fietkau, R., Schultze, J., Schlichting, G., Koltze, H., Kimmig, B., Glatzel, M., Fröhlich, D., Bäsecke, S., Krauß, A., Strauß, D., Buth, K.-J., Böhme, R., Oehler, W., Bottke, D., Keilholz, U., Heufelder, K., Wiegel, T., Hinkelbein, W., Rödel, C., Papadopoulos, T., Munnes, M., Wirtz, R., Sauer, R., Rödel, F., Lubgan, D., Distel, L., Grabenbauer, G. G., Sak, A., Stüben, G., Pöttgen, C., Grehl, S., Stuschke, M., Müller, K., Pfaffendorf, C., Mayerhofer, A., Köhn, F. M., Ring, J., van Beuningen, D., Meineke, V., Neubauer, S., Keller, U., Wittlinger, M., Riesenbeck, D., Greve, B., Exeler, R., Ibrahim, M., Liebscher, C., Severin, E., Ott, O., Pötter, R., Hammer, J., Hildebrandt, G., Beckmann, M. W., Strnad, V., Fehlauer, F., Tribius, S., Bajrovic, A., Höller, U., Rades, D., Warszawski, A., Baumann, R., Madry-Gevecke, B., Karstens, J. H., Grehn, C., Hensley, F., Berns, C., Wannenmacher, M., Semrau, S., Reimer, T., Gerber, B., Ketterer, P., Koepcke, E., Hänsgen, G., Strauß, H. G., Dunst, J., Füller, J., Kalb, S., Wendt, T., Weitmann, H. D., Waldhäusl, C., Knocke, T.-H., Lamprecht, U., Classen, J., Kaulich, T. W., Aydeniz, B., Bamberg, M., Wiezorek, T., Banz, N., Salz, H., Scheithauer, M., Schwedas, M., Lutterbach, J., Bartelt, S., Frommhold, H., Lambert, J., Hornung, D., Swiderski, S., Walke, M., Siefert, A., Pöllinger, B., Krimmel, K., Schaffer, M., Koelbl, O., Bratengeier, K., Vordermark, D., Flentje, M., Hero, B., Berthold, F., Combs, S. E., Gutwein, S., Schulz-Ertner, D., van Kampen, M., Thilmann, C., Kocher, M., Kunze, S., Schild, S., Ikezaki, K., Müller, B., Sieber, R., Weiß, C., Wolf, I., Wenz, F., Weber, K.-J., Schäfer, J., Engling, A., Laufs, S., Veldwijk, M. R., Milanovic, D., Fleckenstein, K., Zeller, W., Fruehauf, S., Herskind, C., Weinmann, M., Jendrossek, V., Rübe, C., Appold, S., Kusche, S., Hölscher, T., Brüchner, K., Geyer, P., Baumann, M., Kumpf, R., Zimmermann, F., Schill, S., Geinitz, H., Nieder, C., Jeremic, B., Molls, M., Liesenfeld, S., Petrat, H., Hesselmann, S., Schäfer, U., Bruns, F., Horst, E., Wilkowski, R., Assmann, G., Nolte, A., Diebold, J., Löhrs, U., Fritz, P., Hans-Jürgen, K., Mühlnickel, W., Bach, P., Wahlers, B., Kraus, H.-J., Wulf, J., Hädinger, U., Baier, K., Krieger, T., Müller, G., Hof, H., Herfarth, K., Brunner, T., Hahn, S. M., Schreiber, F. S., Rustgi, A. K., McKenna, W. G., Bernhard, E. J., Guckenberger, M., Meyer, K., Willner, J., Schmidt, M., Kolb, M., Li, M., Gong, P., Abdollahi, A., Trinh, T., Huber, P. E., Christiansen, H., Saile, B., Neubauer-Saile, K., Tippelt, S., Rave-Fränk, M., Hermann, R. M., Dudas, J., Hess, C. F., Schmidberger, H., Ramadori, G., Andratschke, N., Price, R., Ang, K.-K., Schwarz, S., Kulka, U., Busch, M., Schlenger, L., Bohsung, J., Eichwurzel, I., Matnjani, G., Sandrock, D., Richter, M., Wurm, R., Budach, V., Feussner, A., Gellermann, J., Jordan, A., Scholz, R., Gneveckow, U., Maier-Hauff, K., Ullrich, R., Wust, P., Felix, R., Waldöfner, N., Seebass, M., Ochel, H.-J., Dani, A., Varkonyi, A., Osvath, M., Szasz, A., Messer, P. M., Blumstein, N. M., Gottfried, H.-W., Schneider, E., Reske, S. N., Röttinger, E. M., Grosu, A.-L., Franz, M., Stärk, S., Weber, W., Heintz, M., Indenkämpen, F., Beyer, T., Lübcke, W., Levegrün, S., Hayen, J., Czech, N., Mbarek, B., Köster, R., Thurmann, H., Todorovic, M., Schuchert, A., Meinertz, T., Münzel, T., Grundtke, H., Hornig, B., Hehr, T., Dilcher, C., Chan, R. C., Mintz, G. S., Kotani, J.-I., Shah, V. M., Canos, D. A., Weissman, N. J., Waksman, R., Wolfram, R., Bürger, B., Schrappe, M., Timmermann, B., Lomax, A., Goitein, G., Schuck, A., Mattke, A., Int-Veen, C., Brecht, I., Bernhard, S., Treuner, J., Koscielniak, E., Heinze, F., Kuhlen, M., von Schorlemer, I., Ahrens, S., Hunold, A., Könemann, S., Winkelmann, W., Jürgens, H., Gerstein, J., Polivka, B., Sykora, K.-W., Bremer, M., Thamm, R., Höpfner, C., Gumprecht, H., Jäger, R., Leonardi, M. A., Frank, A. M., Trappe, A. E., Lumenta, C. B., Östreicher, E., Pinsker, K., Müller, A., Fauser, C., Arnold, W., Henzel, M., Groß, M. W., Engenhart-Cabillic, R., Schüller, P., Palkovic, S., Schröder, J., Wassmann, H., Block, A., Bauer, R., Keffel, F.-W., Theophil, B., Wisser, L., Rogger, M., Niewald, M., van Lengen, V., Mathias, K., Welzel, G., Bohrer, M., Steinvorth, S., Schleußner, C., Leppert, K., Röhrig, B., Strauß, B., van Oorschot, B., Köhler, N., Anselm, R., Winzer, A., Schneider, T., Koch, U., Schönekaes, K., Mücke, R., Büntzel, J., Kisters, K., Scholz, C., Keller, M., Winkler, C., Prause, N., Busch, R., Roth, S., Haas, I., Willers, R., Schultze-Mosgau, S., Wiltfang, J., Kessler, P., Neukam, F. W., Röper, B., Nüse, N., Auer, F., Melzner, W., Geiger, M., Lotter, M., Kuhnt, T., Müller, A. C., Jirsak, N., Gernhardt, C., Schaller, H.-G., Al-Nawas, B., Klein, M. O., Ludwig, C., Körholz, J., Grötz, K. A., Huppers, K., Kunkel, M., Olschewski, T., Bajor, K., Lang, B., Lang, E., Kraus-Tiefenbacher, U., Hofheinz, R., von Gerstenberg-Helldorf, B., Willeke, F., Hochhaus, A., Roebel, M., Oertel, S., Riedl, S., Buechler, M., Foitzik, T., Ludwig, K., Klar, E., Meyer, A., Meier zu Eissen, J., Schwab, D., Meyer, T., Höcht, S., Siegmann, A., Sieker, F., Pigorsch, S., Milicic, B., Acimovic, L., Milisavljevic, S., Radosavljevic-Asic, G., Presselt, N., Baum, R. P., Treutler, D., Bonnet, R., Schmücking, M., Sammour, D., Fink, T., Ficker, J., Pradier, O., Lederer, K., Weiss, E., Hille, A., Welz, S., Sepe, S., Friedel, G., Spengler, W., Susanne, E., Kölbl, O., Hoffmann, W., Wörmann, B., Günther, A., Becker-Schiebe, M., Güttler, J., Schul, C., Nitsche, M., Körner, M. K., Oppenkowski, R., Guntrum, F., Malaimare, L., Raub, M., Schöfl, C., Averbeck, T., Hacker, I., Blank, H., Böhme, C., Imhoff, D., Eberlein, K., Weidauer, S., Böttcher, H. D., Edler, L., Tatagiba, M., Molina, H., Ostertag, C., Milker-Zabel, S., Zabel, A., Schlegel, W., Hartmann, A., Wildfang, I., Kleinert, G., Hamm, K., Reuschel, W., Wehrmann, R., Kneschaurek, P., Münter, M. W., Nikoghosyan, A., Didinger, B., Nill, S., Rhein, B., Küstner, D., Schalldach, U., Eßer, D., Göbel, H., Wördehoff, H., Pachmann, S., Hollenhorst, H., Dederer, K., Evers, C., Lamprecht, J., Dastbaz, A., Schick, B., Fleckenstein, J., Plinkert, P. K., Rübe, Chr., Merz, T., Sommer, B., Mencl, A., Ghilescu, V., Astner, S., Martin, A., Momm, F., Volegova-Neher, N. J., Schulte-Mönting, J., Guttenberger, R., Buchali, A., Blank, E., Sidow, D., Huhnt, W., Gorbatov, T., Heinecke, A., Beckmann, G., Bentia, A.-M., Schmitz, H., Spahn, U., Heyl, V., Prott, P.-J., Galalae, R., Schneider, R., Voith, C., Scheda, A., Hermann, B., Bauer, L., Melchert, F., Kröger, N., Grüneisen, A., Jänicke, F., Zander, A., Zuna, I., Schlöcker, I., Wagner, K., John, E., Dörk, T., Lochhas, G., Houf, M., Lorenz, D., Link, K.-H., Prott, F.-J., Thoma, M., Schauer, R., Heinemann, V., Romano, M., Reiner, M., Quanz, A., Oppitz, U., Bahrehmand, R., Tine, M., Naszaly, A., Patonay, P., Mayer, Á., Markert, K., Mai, S.-K., Lohr, F., Dobler, B., Pinkawa, M., Fischedick, K., Treusacher, P., Cengiz, D., Mager, R., Borchers, H., Jakse, G., Eble, M. J., Asadpour, B., Krenkel, B., Holy, R., Kaplan, Y., Block, T., Czempiel, H., Haverkamp, U., Prümer, B., Christian, T., Benkel, P., Weber, C., Gruber, S., Reimann, P., Blumberg, J., Krause, K., Fischedick, A.-R., Kaube, K., Steckler, K., Henzel, B., Licht, N., Loch, T., Krystek, A., Lilienthal, A., Alfia, H., Claßen, J., Spillner, P., Knutzen, B., Souchon, R., Schulz, I., Grüschow, K., Küchenmeister, U., Vogel, H., Wolff, D., Ramm, U., Licner, J., Rudolf, F., Moog, J., Rahl, C. G., Mose, S., Vorwerk, H., Weiß, E., Engert, A., Seufert, I., Schwab, F., Dahlke, J., Zabelina, T., Krüger, W., Kabisch, H., Platz, V., Wolf, J., Pfistner, B., Stieltjes, B., Wilhelm, T., Schmuecking, M., Junker, K., Treutier, D., Schneider, C. P., Leonhardi, J., Niesen, A., Hoeffken, K., Schmidt, A., Mueller, K.-M., Schmid, I., Lehmann, K., Blumstein, C. G., Kreienberg, R., Freudenberg, L., Kühl, H., Stahl, M., Elo, B., Erichsen, P., Stattaus, H., Welzel, T., Mende, U., Heiland, S., Salter, B. J., Schmid, R., Stratakis, D., Huber, R. M., Haferanke, J., Zöller, N., Henke, M., Lorenzen, J., Grzyska, B., Kuhlmey, A., Adam, G., Hamelmann, V., Bölling, T., Job, H., Panke, J. E., Feyer, P., Püttmann, S., Siekmeyer, B., Jung, H., Gagel, B., Militz, U., Piroth, M., Schmachtenberg, A., Hoelscher, T., Verfaillie, C., Kaminski, B., Lücke, E., Mörtel, H., Eyrich, W., Fritsch, M., Georgi, J.-C., Plathow, C., Zieher, H., Kiessling, F., Peschke, P., Kauczor, H.-U., Licher, J., Schneider, O., Henschler, R., Seidel, C., Kolkmeyer, A., Nguyen, T. P., Janke, K., Michaelis, M., Bischof, M., Stoffregen, C., Lipson, K., Weber, K., Ehemann, V., Jürgen, D., Achanta, P., Thompson, K., Martinez, J. L., Körschgen, T., Pakala, R., Pinnow, E., Hellinga, D., O’Tio, F., Katzer, A., Kaffer, A., Kuechler, A., Steinkirchner, S., Dettmar, N., Cordes, N., Frick, S., Kappler, M., Taubert, H., Bartel, F., Schmidt, H., Bache, M., Frühauf, S., Wenk, T., Litzenberger, K., Erren, M., van Valen, F., Liu, L., Yang, K., Palm, J., Püsken, M., Behe, M., Behr, T. M., Marini, P., Johne, A., Claussen, U., Liehr, T., Steil, V., Moustakis, C., Griessbach, I., Oettel, A., Schaal, C., Reinhold, M., Strasssmann, G., Braun, I., Vacha, P., Richter, D., Osterham, T., Wolf, P., Guenther, G., Miemietz, M., Lazaridis, E. A., Forthuber, B., Sure, M., Klein, J., Saleske, H., Riedel, T., Hirnle, P., Horstmann, G., Schoepgens, H., Van Eck, A., Bundschuh, O., Van Oosterhut, A., Xydis, K., Theodorou, K., Kappas, C., Zurheide, J., Fridtjof, N., Ganswindt, U., Weidner, N., Buchgeister, M., Weigel, B., Müller, S. B., Glashörster, M., Weining, C., Hentschel, B., Sauer, O. A., Kleen, W., Beck, J., Lehmann, D., Ley, S., Fink, C., Puderbach, M., Hosch, W., Schmähl, A., Jung, K., Stoßberg, A., Rolf, E., Damrau, M., Oetzel, D., Maurer, U., Maurer, G., Lang, K., Zumbe, J., Hahm, D., Fees, H., Robrandt, B., Melcher, U., Niemeyer, M., Mondry, A., Kanellopoulos-Niemeyer, V., Karle, H., Jacob-Heutmann, D., Born, C., Mohr, W., Kutzner, J., Thelen, M., Schiebe, M., Pinkert, U., Piasswilm, L., Pohl, F., Garbe, S., Wolf, K., Nour, Y., Barwig, P., Trog, D., Schäfer, C., Herbst, M., Dietl, B., Cartes, M., Schroeder, F., Sigingan-Tek, G., Feierabend, R., Theden, S., Schlieck, A., Gotthardt, M., Glowalla, U., Kremp, S., Hamid, O., Riefenstahl, N., Michaelis, B., Schaal, G., Liebermeister, E., Niewöhner-Desbordes, U., Kowalski, M., Franz, N., Stahl, W., Baumbach, C., Thale, J., Wagner, W., Justus, B., Huston, A. L., Seaborn, R., Rai, P., Rha, S.-W., Sakas, G., Wesarg, S., Zogal, P., Schwald, B., Seibert, H., Berndt-Skorka, R., Seifert, G., Schoenekaes, K., Bilecen, C., Ito, W., Matschuck, G., and Isik, D.

Published
2004
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21. Maleic acid modified cellulose for scavenging lead from water

Author

C.P.R. Nair, Sabu Thomas, and Georgi J. Vadakkekara

Subjects
Maleic acid, Metal ions in aqueous solution, Sodium, Inorganic chemistry, chemistry.chemical_element, 02 engineering and technology, Biochemistry, Water Purification, 03 medical and health sciences, chemistry.chemical_compound, Structural Biology, Freundlich equation, Carboxylate, Cellulose, Molecular Biology, 030304 developmental biology, 0303 health sciences, Spectrum Analysis, Maleates, Temperature, Maleic anhydride, General Medicine, Hydrogen-Ion Concentration, Models, Theoretical, 021001 nanoscience & nanotechnology, Kinetics, chemistry, Lead, Chemisorption, Nanoparticles, Adsorption, 0210 nano-technology, Algorithms, Water Pollutants, Chemical
Abstract

Macro, micro and nano fibrillary cellulose with sodium maleate groups was synthesized by the reaction of cellulose with maleic anhydride followed by sodium exchange of protons. In the present work, we demonstrate that these carboxylic groups act as chemisorbants towards toxic heavy metal ions present in contaminated water. The effects of the operating parameters such as resident time, temperature, pH, ion concentration and ion nature on chemisorbability were estimated for a given cellulose carboxylate. The kinetic results for the chemisorption of Pb2+ ion were indicative of an intra particle diffusion model and pseudo second order reaction. The chemisorption is well explained by a Freundlich isotherm model showing a multilayer chemisorption, heterogeneous surface and interaction between chemisorbed molecules. The chemisorption capability was enhanced upon decreasing the dimension of the cellulose fibril. The efficiency depended also on the nature of metal ions, dictated by the stability of the geometry of the resultant complex. The maximum chemisorption capacities of macro, micro and nano forms of sodium cellulose-maleate for Pb2+ were 20 mg/g, 40 mg/g and 115 mg/g, respectively at pH of 5.5. The ion exchanged nano-cellulose maleate could be regenerated by sodium chloride solution without loss of efficiency even after 7 cycles.

Published
2018

24. Erratum to: Production of $ \Sigma^{0}_{}$ hyperons in proton-proton collisions

Author

Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K-Th., Clement, H., Dietrich, J., Doroshkevich, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hesselbarth, D., Jäger, H., Jakob, B., Jäkel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kreß, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Meyer, W., Michel, P., Möller, K., Morsch, H. P., Mörtel, H., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, Ch., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schönmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzig, F., Steinke, M., Sun, G. Y., Teufel, A., Ullrich, W., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirth, S., Wüstner, P., Zupranski, P., and The COSY-TOF Collaboration

Published
2010
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25. Direct Cannulation of Ascending Aorta versus Standard Femoral Artery Cannulation in Acute Aortic Dissection Type A

Author

Sergey Iliev, Georgi J Stoitsev, Vassil Gegouskov, Georgi Manchev, and Vladimir Danov

Subjects
Adult, Male, medicine.medical_specialty, Catheters, medicine.medical_treatment, Aorta, Thoracic, Femoral artery, Catheterization, Young Adult, Postoperative Complications, medicine.artery, Ascending aorta, Ascending Aorta, medicine, Humans, Thoracic aorta, Cerebral perfusion pressure, Bulgaria, Direct Cannulation, Stroke, Aged, Retrospective Studies, Aged, 80 and over, Aortic dissection, Aortic Aneurysm, Thoracic, business.industry, Acute Aortic Dissection, Incidence, Equipment Design, Middle Aged, medicine.disease, Magnetic Resonance Imaging, Surgery, Femoral Artery, Survival Rate, Aortic Dissection, Treatment Outcome, Median sternotomy, Acute Disease, Circulatory system, cardiovascular system, Female, Tomography, X-Ray Computed, Cardiology and Cardiovascular Medicine, business, Vascular Surgical Procedures, Echocardiography, Transesophageal, Follow-Up Studies
Abstract

Background: During surgery for ascending aortic dissection, the dissected ascending aorta itself has traditionally been rejected as a cannulation option. The purpose of this study is to prove that direct cannulation of the ascending aorta in patients operated for acute aortic dissection type A (AADA) is at least as effective and safe as classic femoral cannulation.Methods and Results: Between September 2008 and January 2015, we operated on 117 patients with AADA through median sternotomy. Cannulation was accomplished in 32 cases (27%) through the femoral artery (group A), and in 85 patients (73%) through the dissected ascending aorta (group B). Moderate hypothermic circulatory arrest with bilateral antegrade cerebral perfusion was used in 108 patients (92%). The mean time of circulatory arrest was 17 minutes (range: 9-52 minutes). The 30-day mortality rate was 22% (7 patients) in group A, and 18% (15 patients) in group B (P = not significant). Temporary neurologic dysfunction (TND) including postoperative confusion, delirium, or agitation occurred in four patients (13%) in group A, and four patients (5%) in group B (P = not significant). The incidence of permanent neurologic dysfunction (stroke) was 9% (3 patients) in group A and 3% (3 patients) in group B.Conclusions: The direct cannulation of the ascending aorta is a safe alternative for patients with AADA, offering the opportunity for antegrade cerebral perfusion. It is easy to perform, reliable, and associated with acceptable early results.

Published
2018

28. Morphological variation and airflow dynamics in the human nose

Author

Churchill, Steven E., Shackelford, Laura L., Georgi, J. Nicole, and Black, Michael T.

Subjects
Human biology -- Research, Air flow -- Research, Morphological variation -- Research, Biological sciences
Abstract

Study was done on airflow across physiological flow rates using water and dye flowing through anatomically accurate acrylic models of human nasal air passage ways in order to better understand the effects of nasal variation on airflow. A number of features in the human nose are argued to enhance airflow turbulence, thus increasing the exposure of moving air to the nasal mucosa and facilitating heat and moisture exchange in cold and/or dry climates.

Published
2004

30. IDENTIFICATION AND SUSTAINABLE EXPLOITATION OF WILD EDIBLE MUSHROOMS IN RURAL AREAS ('MYCOTICON', LDV-TOI PROJECT): DEVELOPMENT OF AN INNOVATIVE TRAINING PACKAGE TO MEET EDUCATIONAL AND INCOME-GENERATING DEMANDS IN SOUTH EUROPE AND FOR IMPROVING THE USE OF MUSHROOMS AS HIGH-VALUE FOOD

Author

Zervakis, GI, Denchev, CM, Fitsilis, PT, Gerogiannis, VC, Papaefthimiou, S, Georgi, J, Polemis, E, Denchev, TT, Assyov, B, VENTURELLA, Giuseppe, SAITTA, Alessandro, GARGANO, Maria Letizia, Zervakis, GI, Venturella, G, Denchev, CM, Fitsilis, PT, Gerogiannis, VC, Papaefthimiou, S, Georgi, J, Saitta, A, Polemis, E, Denchev, TT, Assyov, B, and Gargano, ML

Subjects
Identification, Suistainable use, Mushrooms, Settore BIO/03 - Botanica Ambientale E Applicata
Abstract

In Mediterranean and in southeast Europe the activities of a significant part of the population are traditionally linked with agriculture, forestry and animal husbandry. However, many rural communities are experiencing serious difficulties associated with low income per person and poor employment prospects combined with increased demographic decline. Alternative activities such as the collection and trading of wild edible mushrooms as well as the cultivation of choice species could contribute at providing valuable solutions both in financial and environmental terms. The total number of fungal species which are considered having edible and/or medicinal value is over 2300 [1]. Most of them form large conspicuous sporophores (i.e. mushrooms) during their life-cycle, which are either harvested from the wild or cultivated on a wide range of plant and agro-industrial residues and by-products. Foraying and picking of wild edible mushrooms has a long tradition in most European countries; therefore it constitutes a significant socioeconomic activity, while at the same time reflects local knowledge and social practices that are worth preserving. Recent food market tendencies reveal a high demand potential for wild edible mushrooms among urban consumers. In those cases that wild fungi are not well-known because pertinent knowledge was not spread within families or local communities, people avoid their harvest; instead they are oriented at consuming cultivated mushrooms which become increasingly popular. This latter type of activity is tightly associated with environmental protection through recycling and valorization of low-value substrates together with the conservation of some highly sought-after mushroom species [2, 3]. The “Mycoticon” project (EU, LdV-ToI) involves Universities, Technological, and Research Institutions as well as local stakeholders and associated end-users from four European countries, i.e. Bulgaria, Cyprus, Greece and Italy. These partners combine their experience and expertise at developing an integrated educational and training package together with its respective tools to meet the demands of suitable target-groups willing to create collective entrepreneurship schemes for exploiting the economic potential of wild mushrooms in rural areas. Ultimately, the objective is to facilitate the generation of a new source of non-subsidized income and create new jobs in areas desperately in need of both. In parallel, local people are expected to be presented with incentives to adopt sustainable management and harvesting practices for wild edible mushrooms together with basic knowledge on mushroom cultivation. Among other anticipated deliverables, national reports were compiled for each participating country as regards the current knowledge/situation on diversity, harvest and trade of wild edible mushrooms as well as on commercial mushroom production. In addition, a voluminous textbook was prepared [4] which provided a detailed description of 22 choice edible and 11 selected poisonous mushrooms (together with many other related taxa) of significance in all four countries. Moreover, it included general information about biology and ecology of mushroom fungi, their common habitats/ecosystems, proper harvest practices and suitable food preservation methods, relevant legislation and conservation issues, and basic guidelines for the cultivation of the most popular species together with prospects for developing tourism activities associated with mushrooms. All of them formed the basis for the development of an innovative training material established both on paper and online by creating a moodle web-page (http://moodle.teilar.gr/). This electronic tool was assembled in four languages (English, Italian, Greek and Bulgarian) and it now provides a user-friendly and flexible modular training course through which e-self-assessment and e-accreditation could be also accomplished. The training package complies with EQF rules and it will be further structured according to EC-VET provisions. Its content is anticipated to enhance the development of pertinent skills and subsequently increase employment of qualified people in rural areas. Furthermore, it provides the prerequisites for combining local assets and resources into mushroom products that meet consumers’ expectations. Such activities constitute a highly recommended approach in Europe since rural income could derive from integrated direct and indirect recourses (by also supporting conservation and environmental sustainability) and not only by the primary agricultural production.

Published
2013

38. The pK0��+ final state in proton-proton collisions

Author

TOF Collaboration, Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K-Th., Clement, H., Dietrich, J., Doroshkevich, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hesselbarth, D., J��ger, H., Jakob, B., J��kel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kre��, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Meyer, W., Michel, P., M��ller, K., Morsch, H. P., M��rtel, H., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, Ch., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Sch��nmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzing, F., Steinke, M., Sun, G. Y., Teufel, A., Ullrich, W., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirthand, S., W��stner, P., and Zupranski, P.

Subjects
Nuclear Theory (nucl-th), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

This paper reports results from a study of the reaction pp->pK0��+ at beam momenta of p_{beam} = 2950, 3059, and 3200 MeV/c (excess energies of ��= 126, 161, and 206 MeV). Total cross sections were determined for all energies; a set of differential cross sections (Dalitz plots; invariant mass spectra of all two-body subsystems; angular distributions of all final state particles; distributions in helicity and Jackson frames) are presented for ��= 161 MeV. The total cross sections are proportional to the volume of available three-body phase-space indicating that the transition matrix element does not change significantly in this range of excess energies. It is concluded from the differential data that the reaction proceeds dominantly via the N(1710)P_{11} and/or N(1720)P_{13} resonance(s); N(1650)S_{11} and ��(1600)P_{33} could also contribute., 15 pages, 10 figures

Published
2012
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39. The pK0Σ+ final state in proton-proton collisions

Author

Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K.-T., Clement, H., Dietrich, J., Doroshkevich, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hesselbarth, D., Jäger, H., Jakob, B., Jäkel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kreß, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Meyer, W., Michel, P., Möller, K., Morsch, H. P., Mörtel, H., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, C., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schönmeier, P., Schroeder, W., Schulte-Wissermann, M., Sefzick, T., Stinzing, F., Steinke, M., Sun, G. Y., Teufel, A., Ullrich, W., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirthand, S., Wüstner, P., and Zupranski, P.

Abstract

This paper reports results from a study of the reaction pp->pK0\Sigma+ at beam momenta of p_{beam} = 2950, 3059, and 3200 MeV/c (excess energies of \epsilon= 126, 161, and 206 MeV). Total cross sections were determined for all energies; a set of differential cross sections (Dalitz plots; invariant mass spectra of all two-body subsystems; angular distributions of all final state particles; distributions in helicity and Jackson frames) are presented for \epsilon= 161 MeV. The total cross sections are proportional to the volume of available three-body phase-space indicating that the transition matrix element does not change significantly in this range of excess energies. It is concluded from the differential data that the reaction proceeds dominantly via the N(1710)P_{11} and/or N(1720)P_{13} resonance(s); N(1650)S_{11} and \Delta(1600)P_{33} could also contribute.

Published
2012

43. Systematic study of the pp -> pp omega reaction

Author

Abdel-Bary, M., AbdEl-Samad, S., Fanara, C., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hesselbarth, D., Brinkmann, K., Jaeger, H., Jakob, B., Jaekel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kress, J., Kuhlmann, E., Lehmann, A., Clement, H., Marcello, S., Marwinski, S., Mauro, S., Meyer, W., Michel, P., Moeller, K., Moertel, H., Morsch, H.P., Naumann, L., Paul, N., Dietrich, J., Pinna, L., Pizzolotto, C., Plettner, C., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schoenmeier, P, Schulte-Wissermann, M., Dorochkevitch, E., Schroeder, W., Sefzick, T., Steinke, M., Stinzing, F., Sun, G., Teufel, A., Ullrich, W., Waechter, J., Wagner, G. J., Wagner, M., Dshemuchadse, S., Wenzel, R., Wilms, A., Wintz, P., Wirth, S., Wuestner, P., Zupranski, P., Ehrhardt, K., Erhardt, A., and Eyrich, W.

Subjects
model [meson], COSY-TOF, energy dependence [total cross section], +p+p+omega%28783%29%22">p p --> p p omega(783), ddc:530, interaction [p p], Juelich COSY PS, Nuclear Experiment, angular distribution [p], hadroproduction [omega(783)], production [meson], spin [meson]
Abstract

A systematic study of the production of omega-mesons in proton-proton-collisions was carried out in a kinematically complete experiment at three excess energies(epsilon= 92, 128, 173MeV). Both protons were detected using the large-acceptance COSY-TOF spectrometer at an external beam line at the Cooler Synchrotron COSY at Forschungszentrum J\"ulich. The total cross section, angular distributions of both omega-mesons and protons were measured and presented in various reference frames such as the overall CMS, helicity and Jackson frame. In addition, the orientation of the omega-spin and invariant mass spectra were determined. We observe omega-production to take place dominantly in Ss and Sp final states at epsilon = 92, 128 MeV and, additionally, in Sd at epsilon= 173 MeV. No obvious indication of resonant omega-production via N^*-resonances was found, as proton angular distributions are almost isotropic and invariant mass spectra are compatible with phase space distributions. A dominant role of ^3P_1 and ^1S_0 initial partial waves for omega-production was concluded from the orientation of the decay plane of the omega-meson. Although the Jackson angle distributions in the omega-p-Jackson frame are anisotropic we argue that this is not an indication of a resonance but rather a kinematical effect reflecting the anisotropy of the omega angular distribution. The helicity angle distribution in the omega-p-helicity frame shows an anisotropy which probably reflects effects of the omega angular momenta in the final state; this observable may be, in addition to the orientation of the omega decay plane, the most sensitive one to judge the validity of theoretical descriptions of the production process., Comment: 17 pages, 16 figures, accepted for publication in EPJA

Published
2010
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44. Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum

Author

AbdEl Samad, S., Abdel Bary, M., Brinkmann, K., Clement, H., Dietrich, J., Dorochkevitch, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Fanara, C., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hauffe, J., Hesselbarth, D., Jaeger, H., Jakob, B., Jaekel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kress, J., Kuhlmann, E., Lehmann, A., Marcello, Simonetta, Marwinski, S., Mauro, S., Metzger, A., Meyer, W., Michel, P., Moeller, K., Moertel, H., Morsch, H. P., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, C., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schoenmeier, P., Schulte Wissermann, M., Schroeder, W., Sefzick, T., Steinke, M., Stinzing, F., Sun, G., Teufel, A., Ullrich, W., Waechter, J., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirth, S., Wüstner, P., and Zupranski, P.

Subjects
Associated strangeness production, hyperon production, total cross-section, baryon resonances, Dalitz plot
Published
2010

45. Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum

Author

TOF Collaboration, AbdEl-Samad, S., Abdel-Bary, M., Brinkmann, K., Clement, H., Dietrich, J., Dorochkevitch, E., Dshemuchadse, S., Ehrhardt, K., Erhardt, A., Eyrich, W., Fanara, C., Filges, D., Filippi, A., Freiesleben, H., Fritsch, M., Gast, W., Georgi, J., Gillitzer, A., Gottwald, J., Hauffe, J., Hesselbarth, D., Jaeger, H., Jakob, B., Jaekel, R., Karsch, L., Kilian, K., Koch, H., Krapp, M., Kress, J., Kuhlmann, E., Lehmann, A., Marcello, S., Marwinski, S., Mauro, S., Metzger, A., Meyer, W., Michel, P., Moeller, K., Moertel, H., Morsch, H. P., Naumann, L., Paul, N., Pinna, L., Pizzolotto, C., Plettner, C., Reimann, S., Richter, M., Ritman, J., Roderburg, E., Schamlott, A., Schoenmeier, P., Schulte-Wissermann, M., Schroeder, W., Sefzick, T., Steinke, M., Stinzing, F., Sun, G., Teufel, A., Ullrich, W., Waechter, J., Wagner, G. J., Wagner, M., Wenzel, R., Wilms, A., Wintz, P., Wirth, S., Wuestner, P., and Zupranski, P.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

Hyperon production in the threshold region was studied in the reaction pp -> K+Lp using the time-of-flight spectrometer COSY-TOF. Exclusive data, covering the full phase-space, were taken at the three different beam momenta of p_beam=2.95, 3.20 and 3.30 GeV/c, corresponding to excess energies of epsilon=204, 285 and 316 MeV, respectively. Total cross-sections were deduced for the three beam momenta to be 23.9+/-0.8 +/-2.0 ub, 28.4+/-1.3 +/-2.2 ub and 35.0+/-1.3 +/-3.0 ub. Differential observables including Dalitz plots were obtained. The analysis of the Dalitz plots reveals a strong influence of the N(1650)-resonance at p_beam=2.95 GeV/c, whereas for the higher momenta an increasing relative contribution of the N(1710)- and/or of the N(1720)-resonance was observed. In addition, the pL-final-state interaction turned out to have a significant influence on the Dalitz plot distribution., accepted for publication at Physics Letters B; some minor text changes were done; also the scale of the ordinates of figure 9 has been changed

Published
2010
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46. Improved study of a possible Theta+ production in the pp -> p K0 sigma+ reaction with the COSY-TOF spectrometer

Author

TOF Collaboration, Abdel-Bary, M., Abdel-Samad, S., Brinkmann, K. -Th., Castelijns, R., Clement, H., Dietrich, J., Dshemuchadse, S., Dorochkevitch, E., Eyrich, W., Ehrhardt, K., Erhardt, A., Freiesleben, H., Gast, W., Georgi, J., Gillitzer, A., Jaeger, H., Jaekel, R., Karsch, L., Kilian, K., Krapp, M., Kuhlmann, E., Lehmann, A., Morsch, H. P., Paul, N., Pinna, L., Pizzolotto, C., Ritman, J., Roderburg, E., Schadmand, S., Schoenmeier, P., Schulte-Wissermann, M., Schroeder, W., Sefzick, T., Teufel, A., Ucar, A., Ullrich, W., Wenzel, R., Wintz, P., Wuestner, P., and Zupranski, P.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract

The pp -> p K0 Sigma+ reaction was investigated with the TOF spectrometer at COSY at 3.059 GeV/c incident beam momentum. The main objective was to clarify whether or not a narrow exotic S = +1 resnance, the Theta+ pentaquark, is populated at 1.53 GeV/c2 in the K0 p subsystem with a data sample of much higher statistical significance compared to the previously reported data in this channel. An analysis of these data does not confirm the existence of the Theta+ pentaquark. This is expressed as an upper limit for the cross section sigma (pp -> p K0 Sigma+) < 0.15 microbarn at the 95 percent confidence level., 11 pages, 5 figures

Published
2006
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48. COSY-TOF Research on Theta+

Author

Eyrich, W., Brinkmann, K., Filippi, L. V., Freiesleben, H., Fritsch, M., Georgi, J., Gillitzer, C. G., Gonser, M. A., Jäkel, R., Karsch, L., Kilian, K., Koch, H., Abdel-Bary, M., Kreß, J., Kuhlmann, E., Marcello, S., Meyer, W., Michel, P., Morsch, H. P., Möller, K., Mörtel, H., Naumann, L., Pinna, L., Abdel-Samad, S., Pizzolotto, L., Roderburg, E., Schamlott, A., Schönmeier, P., Schröder, W., Schulter-Wissermann, M., Sefzick, T., Steinke, M., Stinzing, F., Sun, G. Y., Clement, H., Ucar, A., Ullrich, W., Wagner, G. J., Wagner, M., Wilms, A., Wintz, P., Wirth, S., Wüstner, P., Zupranski, P., Doroshkevich, E., Dshemuchadse, S., Dutz, H., Ehrhardt, K., and Erhardt, A.

Subjects
ddc:530, Nuclear Experiment
Abstract

Using the TOF detector at the COSY storage ring the hadronic reaction pp -> Sigma(+)K(0)p was measured exclusively at a beam momentum of 2.95 GeV/c. A narrow peak was observed in the invariant mass spectrum of the K(0)p subsystem at 1530 +/- 15 McV/c(2) with a significance of 4-6 standard deviations, depending on background assumptions. The upper limit of 18 +/- 4 MeV/c(2) (FWHM) for its width is given by the experimental resolution. Since a resonance in this subsystem must have strangeness S = +1 we claim it to be the Theta(+) state for which very recently evidence was found in various experiments. To come to a final decision on the existence of the Theta(+) very recently COSY-TOF performed a measurement which will give results with strongly improved statistical accuracy.

Published
2005

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