Search for the standard model Higgs boson in e+e− collisions at √s=161–172 GeV

Kartvelishvili, Vakhtang (1998) Search for the standard model Higgs boson in e+e− collisions at √s=161–172 GeV. European Physical Journal C: Particles and Fields, 1 (3). pp. 425-438. ISSN 1434-6044

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Abstract

This paper describes a search for the Standard Model Higgs boson using data from e+e−e+e− collisions collected at center-of-mass energies of 161, 170 and 172 GeV by the OPAL detector at LEP. The data collected at these energies correspond to integrated luminosities of 10.0, 1.0 and 9.4 pb −1−1 , respectively. The search is sensitive to the main final states from the process in which the Higgs boson is produced in association with a fermion anti-fermion pair, namely four jets, two jets with missing energy, and two jets produced together with a pair of electron, muon or tau leptons. One candidate event is observed, in agreement with the Standard Model background expectation. In combination with previous OPAL searches at center-of-mass energies close to the Z 00 resonance and the revised previous OPAL searches at 161 GeV , we derive a lower limit of 69.4 GeV for the mass of the Standard Model Higgs boson at the 95% confidence level.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
82532
Deposited By:
Deposited On:
01 Nov 2016 12:00
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Mar 2020 05:39