Neutral Higgs bosons of the Standard Model and of the MSSM are searched for in the data collected at a centre-of-mass energy of 188.6GeV by the ALEPH experiment at LEP, with an integrated luminosity of 176 pb(-1). No evidence for a signal is found. A lower limit of 92.9GeV/c(2) at 95% confidence level is set on the mass of the Standard Model Higgs boson, with an expected sensitivity of 95.9 GeV/c(2). In the MSSM, for tan beta greater than or equal to 0.7 and for benchmark parameter choices, observed (expected) lower limits of 82.5 (83.1) GeV/c(2) and 82.6 (83.2) GeV/c(2) are derived for the masses of the neutral Higgs bosons h and A, respectively. An update of the general MSSM parameter scan is also presented.

Search for the neutral Higgs bosons of the Standard Model and the MSSM in e(+)e(-) collisions at root s=189 GeV / Barate, R., Focardi, E., Ghez, P., Goy, C., Jezequel, S., Lees, J.P., Martin, F., Merle, E., Minard, M.N., Pietrzyk, B., Alemany, R., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez Bosman, M., Garrido, L., Grauges, E., Juste, A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 17:(2000), pp. 223-240.

Search for the neutral Higgs bosons of the Standard Model and the MSSM in e(+)e(-) collisions at root s=189 GeV

FOCARDI, ETTORE;CIULLI, VITALIANO;
2000

Abstract

Neutral Higgs bosons of the Standard Model and of the MSSM are searched for in the data collected at a centre-of-mass energy of 188.6GeV by the ALEPH experiment at LEP, with an integrated luminosity of 176 pb(-1). No evidence for a signal is found. A lower limit of 92.9GeV/c(2) at 95% confidence level is set on the mass of the Standard Model Higgs boson, with an expected sensitivity of 95.9 GeV/c(2). In the MSSM, for tan beta greater than or equal to 0.7 and for benchmark parameter choices, observed (expected) lower limits of 82.5 (83.1) GeV/c(2) and 82.6 (83.2) GeV/c(2) are derived for the masses of the neutral Higgs bosons h and A, respectively. An update of the general MSSM parameter scan is also presented.
2000
17
223
240
Barate, R.; Focardi, Ettore; Ghez, P.; Goy, C.; Jezequel, S.; Lees, J. P.; Martin, F.; Merle, E.; Minard, M. N.; Pietrzyk, B.; Alemany, R.; Bravo, S.;...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/780730
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