A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb−1 of data collected by the ALEPH experiment at centre-of-mass energies from 183 to 209 GeV. No excess of events above background is observed, and exclusion limits are placed on the combined production cross section times branching ratio, ξ2 = sigma(e+e−→Zh) sigmaSM(e+e−→Zh) × B(h --> aa) × B(a --> τ+τ−)2. For mh < 107 GeV/c2 and 4 < ma < 10 GeV/c2, ξ2 > 1 is excluded at the 95% confidence level.
Search for neutral Higgs bosons decaying into four taus at LEP2 / Shael, S., Giannini, G., Et, A.l.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - STAMPA. - 1005/2010:(2010), pp. 049-066. [10.1007/JHEP05(2010)049]
Search for neutral Higgs bosons decaying into four taus at LEP2.
GIANNINI, GIANROSSANO;
2010-01-01
Abstract
A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb−1 of data collected by the ALEPH experiment at centre-of-mass energies from 183 to 209 GeV. No excess of events above background is observed, and exclusion limits are placed on the combined production cross section times branching ratio, ξ2 = sigma(e+e−→Zh) sigmaSM(e+e−→Zh) × B(h --> aa) × B(a --> τ+τ−)2. For mh < 107 GeV/c2 and 4 < ma < 10 GeV/c2, ξ2 > 1 is excluded at the 95% confidence level.Pubblicazioni consigliate
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