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  • Searches for invisibly deca...
    Adam, W; Albrecht, T; Alemany-Fernandez, R; Allport, PP; Amaldi, U; Andringa, S; Antilogus, P; Apel, WD; Asman, B; Baillon, P; Ballestrero, A; Barbier, R; Begalli, M; Benekos, N; Bloch, D; Blom, M; Bonesini, M; Botner, O; Boyko, I; Brenner, R; Brodet, E; Bruckman, P; Brunet, JM; Calvi, M; Camporesi, T; Castro, N; Checchia, P; De Angelis, A; De Min, A; Doroba, K; Dris, M; Eigen, G; Ferrer, A; Flagmeyer, U; Foeth, H; Garcia, C; Golob, B; Gomez-Ceballos, G; Grosdidier, G; Grzelak, K; Haag, C; Hedberg, Vincent; Hennecke, M; Holt, PJ; Hultqvist, K; Jackson, JN; Joram, C; Katsanevas, S; Kjaer, NJ; Kluit, P; Kouznetsov, O; Lamsa, J; Lepeltier, V; Loukas, D; Maltezos, S; Marco, J; Matteuzzi, C; Mjörnmark, Ulf; Moraes, D; Muryn, B; Nicolaidou, R; Oblakowska-Mucha, A; Obraztsov, V; Olshevski, A; Orava, R; Ouraou, A; Paganoni, M; Paiano, S; Papadopoulou, TD; Pape, L; Parodi, F; Passeri, A; Perrotta, A; Polok, G; Pozdniakov, V; Ramler, L; Rehn, J; Rivero, M; Romero, A; Roudeau, P; Savoy-Navarro, A; Sisakian, A; Sosnowski, R; Spassov, T; Taffard, AC; Tegenfeldt, F; Tkatchev, L; Tortosa, P; Travnicek, P; Treille, D; Troncon, C; Van Eldik, J; Van Vulpen, I; Vegni, G; Veloso, F; Verdier, P; Vilanova, D; Wickens, J; Yushchenko, O; Zupan, M

    The European physical journal. C, Particles and fields, 02/2004, Letnik: 32, Številka: 4
    Journal Article

    Searches for HZ production with the Higgs boson decaying into an invisible final state were performed using the data collected by the DELPHI experiment at centre-of-mass energies between 188 GeV and 209 GeV. Both hadronic and leptonic final states of the Z boson were analysed. In addition to the search for a heavy Higgs boson, a dedicated search for a light Higgs boson down to 40 GeV/c2 was performed. No signal was found. Assuming the Standard Model HZ production cross-section, the mass limit for invisibly decaying Higgs bosons is 112.1 GeV/c2 at 95% confidence level. An interpretation in the Minimal Supersymmetric extension of the Standard Model (MSSM) and in a Majoron model is also given.