The reaction e(+)e(-)-->HZ* is used to search for the standard model Higgs boson in the <H nu(nu)over bar> and the Hl(+)l(-) channels. The data sample corresponds to about 4.5 million hadronic Z decays collected by the ALEPH experiment at LEP from 1989 to 1995 at centre-of-mass energies at and around the Z peak. Three candidate events are found in the H mu(+)mu(-) channel, in agreement with the expected background from the electroweak process e(+)e(-) l(+)l(-) <q(q)over bar>. This search results in a 95% C.L. lower limit on the Higgs boson mass of 63.9 GeV/c(2).

Mass limit for the standard model Higgs boson with the full LEP I ALEPH data sample / Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Lucotte, A., Minard, M.n., Nief, J.y., Odier, P., Pietrzyk, B., Casado, M.p., Chmeissani, B., Crespo, J.m., Delfino, M., Efthymiopoulos, I., Fernandez, E., Fernandezbosman, M., Garrido, L., Juste, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 384:1-4(1996), pp. 427-438. [10.1016/0370-2693(96)00800-3]

Mass limit for the standard model Higgs boson with the full LEP I ALEPH data sample

CREANZA, Donato Maria;IASELLI, Giuseppe;MAGGI, Giorgio Pietro;
1996

Abstract

The reaction e(+)e(-)-->HZ* is used to search for the standard model Higgs boson in the and the Hl(+)l(-) channels. The data sample corresponds to about 4.5 million hadronic Z decays collected by the ALEPH experiment at LEP from 1989 to 1995 at centre-of-mass energies at and around the Z peak. Three candidate events are found in the H mu(+)mu(-) channel, in agreement with the expected background from the electroweak process e(+)e(-) l(+)l(-) . This search results in a 95% C.L. lower limit on the Higgs boson mass of 63.9 GeV/c(2).
1996
Mass limit for the standard model Higgs boson with the full LEP I ALEPH data sample / Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Lucotte, A., Minard, M.n., Nief, J.y., Odier, P., Pietrzyk, B., Casado, M.p., Chmeissani, B., Crespo, J.m., Delfino, M., Efthymiopoulos, I., Fernandez, E., Fernandezbosman, M., Garrido, L., Juste, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 384:1-4(1996), pp. 427-438. [10.1016/0370-2693(96)00800-3]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/82
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