Search for supersymmetry in the photon(s) plus missing energy channels at $\sqrt{s}$=161 GeV and 172 GeV

Search for supersymmetry in the photon(s) plus missing energy channels at $\sqrt{s}$=161 GeV and 172 GeV

Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist of 11.1 \pb\ at $\sqrt{s} = 161 ~\, \rm GeV$, 1.1 \pb\ at 170 \gev\ and 9.5 \pb\ at 172 GeV. The \eenunu\ cross se ctio...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics letters. B 1998, Vol.420, p.127-139
Hauptverfasser: Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J.P., Lucotte, A., Minard, M.N., Nief, J.Y., Pietrzyk, B., Casado, M.P., Chmeissani, M., Comas, P., Crespo, J.M., Delfino, M., Fernandez, E., Garrido, L., Juste, A., Martinez, M., Merino, G., Miquel, R., Mir, L.M., Padilla, C., Park, I.C., Pascual, A., Perlas, J.A., Riu, I., Sanchez, F., Colaleo, A., Creanza, D., de Palma, M., Gelao, G., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tricomi, A., Zito, G., Huang, X., Lin, Jiali, Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Alemany, R., Bazarko, A.O., Becker, U., Bright-Thomas, P., Cattaneo, M., Dissertori, G., Drevermann, H., Forty, R.W., Frank, M., Hagelberg, R., Hansen, J.B., Harvey, J., Janot, P., Jost, B., Kneringer, E., Lehraus, I., Mato, P., Minten, A., Moneta, L., Pusztaszeri, J.F., Ranjard, F., Rizzo, G., Rolandi, L., Rousseau, D., Schlatter, D., Schneider, O., Tejessy, W., Teubert, F., Tomalin, I.R., Wachsmuth, H., Ajaltouni, Ziad Zj, Barres, A., Boyer, Claudine, Falvard, Alain, Ferdi, C., Gay, Pascal, Guicheney, C., Henrard, Pierre, Jousset, J., Michel, B., Monteil, S., Montret, Jean-Claude, Pallin, D., Perret, Pascal, Podlyski, F., Proriol, Joseph, Rosnet, P., Rossignol, J.M.
Format: Artikel
Sprache:eng
Schlagworte:
High Energy Physics - Experiment
Physics
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist of 11.1 \pb\ at $\sqrt{s} = 161 ~\, \rm GeV$, 1.1 \pb\ at 170 \gev\ and 9.5 \pb\ at 172 GeV. The \eenunu\ cross se ction is measured. The data are in good agreement with predictions based on the Standard Model, and are used to set upper limits on the cross sections for anomalous photon production. These limits are compared to two different SUSY models and used to set limits on the neutralino mass. A limit of 71 \gevsq\ at 95\% C.L. is set on the mass of the lightest neutralin o ($\tau_{\chi_{1}^{0}} \leq $ 3 ns) for the gauge-mediated supersymmetry breaking and LNZ models.
ISSN:0370-2693