A search for neutral Higgs particles in Z 0 decays

A search for neutral Higgs particles in Z 0 decays

The search in DELPHI data for neutral Higgs bosons is described. No candidate for the Standard Model Higgs is seen in Z 0 decays to H 0ν ν, H 0μ +μ − or H 0 τ + τ − after selections that proved efficient for finding simulated H 0. One remaining candidate for Z 0 → H 0e +e − is consistent with backgr...

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Veröffentlicht in:Nuclear physics. B 1992, Vol.373 (1), p.3-34
Hauptverfasser: Adami, F., Adye, T., Almehed, S., Alvsvaag, S.J., Antilogus, P., Astier, P., Barring, O., Beeston, C.J., Benedic, D., Benlloch, J.M., Bertrand, D., Billoir, P., Bocci, V., Bolognese, T., Boratav, M., Bostjancic, B., Braibant, S., Brand, K.D., Brunet, J-M., Bugge, L., Burmeister, H., Caccia, M., Calvi, M., Carena, F., Carroll, L., Chelkov, G.A., Chliapnikov, P., Contreras, J.L., Crennell, D., Cuevas Maestro, J., De Lotto, B., Delikaris, D., Derkaoui, J., Fenyuk, A., Forbes, K.A.J., Furnival, K., Fuster, J., Gerber, J-P., Giacomelli, P., Gomez Y Cadenas, J.J., Graziani, E., Gros, M-H., Holthuizen, D., Hultqvist, K., Jarlskog, G., Johansson, E.K., Jonker, M., Juillot, P., Kalkanis, G., Keranen, R., Khovanski, N.N., Klein, H., Klovning, A., Kopf, M., Koratzinos, M., Kreuzberger, T., Kronkvist, I., Lacasta, C., Lanceri, L., Leitner, R., Lemoigne, Y., Lemonne, J., Lipniacka, A., Mandl, F., Margoni, M., Mc Nulty, R., Meyer, W.T., Negri, P., Passeri, A., Pegoraro, M., Polok, G., Pullia, A., Reid, D., Resvanis, L.K., Ridky, J., Ronnqvist, C., Rossi, U., Sacquin, Y., Sanchez, E., Sannino, M., Segar, A.M., Smadja, G., Szymanski, P., Tabarelli, T., Toet, D.Z., Tortora, L., Trischuk, W., Tristram, G., Tsyganov, E.N., Vaz, P., Venus, W., Vodopyanov, A.S., Vollmer, M., Wormald, D., Wormser, G., Woschnagg, K., Zalewski, P., Zavrtanik, D., Zukanovich Funchal, R., Zuniga, J.
Format: Artikel
Sprache:eng
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High Energy Physics - Experiment
Physics
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Zusammenfassung:The search in DELPHI data for neutral Higgs bosons is described. No candidate for the Standard Model Higgs is seen in Z 0 decays to H 0ν ν, H 0μ +μ − or H 0 τ + τ − after selections that proved efficient for finding simulated H 0. One remaining candidate for Z 0 → H 0e +e − is consistent with background. Together with our earlier studies, these results restrict the H 0 mass to be above 38 GeV/ c 2 at the 95% confidence level. No signal is found for decays of Minimal Supersymmetric Standard Model neutral Higgs bosons to τ + τ −. Limits are obtained for their decays to produce four jets.
ISSN:0550-3213
1873-1562
DOI:10.1016/0550-3213(92)90447-J