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Search for neutral Higgs bosons decaying into four taus at LEP2

Research output: Contribution to journalJournal article

Published

Article number49
Journal publication date13/05/2010
JournalJournal of High Energy Physics
Journal number5
Volume2010
Number of pages18
Original languageEnglish

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=σ(e+e−→Zh)σSM(e+e−→Zh)×B(h→aa)×B(a→τ+τ−)2 . For m h < 107 GeV/c 2 and 4 < m a < 10 GeV/c 2, ξ 2 > 1 is excluded at the 95% confidence level.