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Observation of an excess in the search for the standard model Higgs boson at ALEPH

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>7/12/2000
<mark>Journal</mark>Physics Letters B
Issue number1-2
Volume495
Number of pages17
Pages (from-to)1-17
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

A search has been performed for the Standard Model Higgs boson in the data sample collected with the ALEPH detector at LEP, at centre-of-mass energies up to 209 GeV. An excess of 3σ beyond the background expectation is found, consistent with the production of the Higgs boson with a mass near 114 GeV/c2. Much of this excess is seen in the four-jet analyses, where three high purity events are selected.