A search has been made for a very light Higgs boson in the processes e+e- → e+e-H and e+e- →μ+μ-H using data collected by ALEPH at the LEP e+e- collider at centre of mass energies close to the Z peak. The mass range between 0 and 57 MeV is unambigously excluded at the 95% confidence level. If we combine this with our previously published analysis, the complete range from 0 to 24 GeV is excluded at 95% CL. The search is extended to light Higgs bosons of the minimal supersymmetric standard model, with the result that all possibilities of coupling are excluded for Higgs masses below 3 GeV.

Search for a very light Higgs boson in Z decays / Decamp, D., Deschizeaux, B., Goy, C., Lees, J.-P., Minard, M.-N., Crespo, J.M., Delfino, M., Fernandez, E., Garrido, Ll., Mato, P., Miquel, R., Mir, Ll.M., Orteu, S., Pacheco, A., Perlas, J.A., Tubau, E., Catanesi, M.G., de Palma, M., Farilla, A., Iaselli, G., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 245:2(1990), pp. 289-297. [10.1016/0370-2693(90)90148-Y]

Search for a very light Higgs boson in Z decays

Iaselli, G.;Maggi, G.;
1990

Abstract

A search has been made for a very light Higgs boson in the processes e+e- → e+e-H and e+e- →μ+μ-H using data collected by ALEPH at the LEP e+e- collider at centre of mass energies close to the Z peak. The mass range between 0 and 57 MeV is unambigously excluded at the 95% confidence level. If we combine this with our previously published analysis, the complete range from 0 to 24 GeV is excluded at 95% CL. The search is extended to light Higgs bosons of the minimal supersymmetric standard model, with the result that all possibilities of coupling are excluded for Higgs masses below 3 GeV.
1990
Search for a very light Higgs boson in Z decays / Decamp, D., Deschizeaux, B., Goy, C., Lees, J.-P., Minard, M.-N., Crespo, J.M., Delfino, M., Fernandez, E., Garrido, Ll., Mato, P., Miquel, R., Mir, Ll.M., Orteu, S., Pacheco, A., Perlas, J.A., Tubau, E., Catanesi, M.G., de Palma, M., Farilla, A., Iaselli, G., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 245:2(1990), pp. 289-297. [10.1016/0370-2693(90)90148-Y]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/4099
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