The light scalar Higgs boson h and the pseudoscalar Higgs boson A of the minimal supersymmetric standard model have been searched for in the processes e+ e- -> h f fbar and e+e−->hA using data collected by ALEPH at the LEP e+e− collider, with center of mass energies at and near the Z peak. Using a variety of signatures adapted to various mass ranges for h and A, we have excluded a large domain in the parameter space. For large values of nu_2/nu_1, the ratio of the vacuum expectation values of the two Higgs fields, the whole range from 0 to 38.8 GeV is excluded for Mh and MA at 95% CL.

Search For Neutral Higgs Bosons From Supersymmetry In Z-decays

CIOCCI, MARIA AGNESE;G. BATIGNANI;FERRANTE, ISIDORO;MESSINEO, ALBERTO MARIA;TONELLI, GUIDO EMILIO;G. TRIGGIANI;
1990-01-01

Abstract

The light scalar Higgs boson h and the pseudoscalar Higgs boson A of the minimal supersymmetric standard model have been searched for in the processes e+ e- -> h f fbar and e+e−->hA using data collected by ALEPH at the LEP e+e− collider, with center of mass energies at and near the Z peak. Using a variety of signatures adapted to various mass ranges for h and A, we have excluded a large domain in the parameter space. For large values of nu_2/nu_1, the ratio of the vacuum expectation values of the two Higgs fields, the whole range from 0 to 38.8 GeV is excluded for Mh and MA at 95% CL.
1990
Decamp, D.; Deschizeaux, B.; Lees, J. P.; Minard, M. N.; Crespo, J. M.; Delfino, M.; Fernandez, E.; Martinez, M.; Miquel, R.; Mir, L. M.; Orteu, S.; P...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/828848
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