1. Search for Gauge-Mediated SUSY Breaking Topologies at $\sqrt{s} \sim$ 189 GeV
- Author
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Barate, R., Decamp, D., Ghez, P., Goy, C., Jezequel, S., Lees, J P., Martin, F., Merle, E., Minard, M N., Pietrzyk, B., Alemany, R., Bravo, S., Casado, M P., Chmeissani, M., Crespo, J M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Graughs, E., Juste, A., Martmnez, M., Merino, G., Miquel, R., Mir, L M., Morawitz, P., Pacheco, A., Riu, I., Ruiz, H., Colaleo, A., Creanza, D., De Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, Jiali, Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Boix, G., Cattaneo, M., Cerutti, F., Ciulli, V., Davies, G., Dissertori, G., Drevermann, H., Forty, R W., Frank, M., Gianotti, F., Greening, T C., Halley, A W., Hansen, J B., Harvey, J., Janot, P., Jost, B., Kado, M., Leroy, O., Maley, P., Mato, P., Minten, A., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Schmitt, M., Schneider, O., Spagnolo, P., Tejessy, W., Teubert, F., Tournefier, E., Valassi, A., Wright, A E., Ajaltouni, Ziad, Badaud, F., Chazelle, G., Deschamps, O., Dessagne, S., Falvard, Alain, Ferdi, C., Gay, Pascal, Guicheney, C., Henrard, Pierre, Jousset, J., Michel, B., Monteil, S., Montret, Jean-Claude, Pallin, D., Pascolo, J M., Perret, Pascal, Podlyski, F., Hansen, J D., Hansen, J R., Hansen, P H., Nilsson, B S., Rensch, B., Wddndnen, A., Daskalakis, G., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Blondel, A., Brient, J C., Machefert, F., Rougi, A., Swynghedauw, M., Tanaka, R., Videau, H., Focardi, E., Parrini, G., Zachariadou, K., Corden, M., Georgiopoulos, C., Antonelli, A., Bencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G P., Passalacqua, L., Pepi-Altarelli, M., Chalmers, M., Kennedy, J., Lynch, J G., Negus, P., O'Shea, V., Rdven, B., Smith, D., Teixeira-Dias, P., Thompson, A S., Ward, J J., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E E., Leibenguth, G., Putzer, A., Tittel, K., Werner, S., Wunsch, M., Beuselinck, R., Binnie, D M., Cameron, W., Dornan, P J., Girone, M., Goodsir, S., Marinelli, N., Martin, E B., Nash, J., Nowell, J., Przysiezniak, H., Sedgbeer, J K., Thompson, J C., Thomson, E., Williams, M D., Ghete, V M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bowdery, C K., Buck, P G., Ellis, G., Finch, A J., Foster, F., Hughes, G., Jones, R W L., Robertson, N A., Smizanska, M., Williams, M I., Giehl, I., Hvlldorfer, F., Jakobs, K., Kleinknecht, K., Krvcker, M., Quast, G., Renk, B., Rohne, E., Sander, H G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Carr, J., Coyle, P., Ealet, A., Fouchez, D., Tilquin, A., Aleppo, M., Antonelli, M., Gilardoni, S., Ragusa, F., Dietl, H., Ganis, G., Mannert, C., Mdnner, W., Moser, H G., Schael, S., Settles, R., Seywerd, H., Stenzel, H., Wiedenmann, W., Wolf, G., Azzurri, P., Boucrot, J., Callot, O., Chen, Si, Davier, M., Duflot, L., Grivaz, J F., Heusse, P., Jacholkowska, A., Lefrangois, J., Serin, L., Veillet, J J., Videau, I., De Vivie De Rigie, J B., Zerwas, D., Bagliesi, G., Boccali, T., Bozzi, C., Calderini, G., Dell'Orso, R., Ferrante, I., Giassi, A., Gregorio, A., Ligabue, F., Marrocchesi, P S., Messineo, A., Palla, F., Rizzo, G., Sanguinetti, G., Sguazzoni, G., Tenchini, R., Venturi, A., Verdini, P G., Blair, G A., Coles, J., Cowan, G., Green, M G., Hutchcroft, D E., Jones, L T., Medcalf, T., Strong, J A., Botterill, D R., Clifft, R W., Edgecock, T R., Norton, P R., Tomalin, I R., Bloch-Devaux, B., Colas, P., Fabbro, B., Faof, G., Langon, E., Lemaire, M C., Locci, E., Pirez, P., Rander, J., Renardy, J F., Rosowsky, A., Seager, P., Trabelsi, A., Tuchming, B., Vallage, B., Black, S N., Dann, J H., Loomis, C., Kim, H Y., Konstantinidis, N., Litke, A M., McNeil, M A., Taylor, G., Booth, C N., Cartwright, S., Combley, F., Hodgson, P N., Lehto, M., Thompson, L F., Affholderbach, K., Bvhrer, A., Brandt, S., Grupen, C., Hess, J., Misiejuk, A., Prange, G., Sieler, U., Borean, C., Giannini, G., Gobbo, B., Putz, J., Rothberg, J E., Wasserbaech, S., Williams, R W., Armstrong, S R., Elmer, P., Ferguson, D P S., Gao, Y., Gonzalez, S., Hayes, O J., Hu, H., Jin, S., Kile, J., McNamara, P A., Nielsen, J., Orejudos, W., Pan, Y B., Saadi, Y., Scott, I J., Walsh, J., Von Wimmersperg-Toeller, J H., Wu Sau, Lan., Wu, X., Zobernig, G., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ALEPH, and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
- Subjects
Europe ,Copyright ,High Energy Physics::Phenomenology ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,High Energy Physics::Experiment ,digitalisation ,Digital library ,Search engine - Abstract
Searches for topologies characteristic of Gauge Mediated SUSY Breaking models (GMSB) are performed by analysing 173.6 pb^-1 of data collected at Ecm = 188.6~GeV with the ALEPH detector.These topologies include acoplanar photons, non-pointing single photon, acoplanar leptons, large impact parameter leptons, detached slepton decay vertices, heavy stable charged sleptons and four leptons plus missing energy final states.No evidence for these new phenomena is observed and limits on production cross sections and sparticle masses are derived. A scan of a minimal GMSB parameter space is performed and model dependent lower limits of about 45 GeV/c^2 on the next-to-lightest supersymmetric particle (NLSP) mass and of about 9 TeV on the mass scale parameter Lambda are derived, independently of the NLSP lifetime.
- Published
- 2000