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

BATIGNANI, GIOVANNI;BETTARINI, STEFANO;CIOCCI, MARIA AGNESE;FERRANTE, ISIDORO;E. Forti;GIORGI, MARCELLO;MESSINEO, ALBERTO MARIA;RIZZO, GIULIANA;TONELLI, GUIDO EMILIO;
1996-01-01

Abstract

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).
1996
D., Buskulic; I., Debonis; D., Decamp; P., Ghez; C., Goy; J. P., Lees; A., Lucotte; M. N., Minard; J. Y., Nief; P., Odier; B., Pietrzyk; M. P., Casado...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/828707
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