The data collected in 1998 by ALEPH at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.2 pb(-1), are analysed to search for invisible decays of a Higgs boson produced in the reaction e(+) e(-) --> hZ. The number of events found in the data and their properties art: in agreement with the Standard Model expectation. This search results in an improved 95% C.L. lower limit on the Higgs boson mass of 95.4 GeV/c(2), assuming it decays totally invisibly and for a production cross section equal to that of the Standard Model. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Search for an invisibly decaying Higgs boson in e(+)e(-) collisions at 189 GeV / Barate, R., Decamp, D., 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 466:1(1999), pp. 50-60. [10.1016/S0370-2693(99)01104-1]

Search for an invisibly decaying Higgs boson in e(+)e(-) collisions at 189 GeV

CREANZA, Donato Maria;IASELLI, Giuseppe;MAGGI, Giorgio Pietro;
1999

Abstract

The data collected in 1998 by ALEPH at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.2 pb(-1), are analysed to search for invisible decays of a Higgs boson produced in the reaction e(+) e(-) --> hZ. The number of events found in the data and their properties art: in agreement with the Standard Model expectation. This search results in an improved 95% C.L. lower limit on the Higgs boson mass of 95.4 GeV/c(2), assuming it decays totally invisibly and for a production cross section equal to that of the Standard Model. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
1999
10.1016/S0370-2693(99)01104-1
Search for an invisibly decaying Higgs boson in e(+)e(-) collisions at 189 GeV / Barate, R., Decamp, D., 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 466:1(1999), pp. 50-60. [10.1016/S0370-2693(99)01104-1]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/4991
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