USE OF DISCRIMINANT-ANALYSIS IN SEARCH OF A NEUTRAL HIGGS-BOSON

Authors
MALMGREN TGM JOHANSSON KE
Citation
Tgm. Malmgren et Ke. Johansson, USE OF DISCRIMINANT-ANALYSIS IN SEARCH OF A NEUTRAL HIGGS-BOSON, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 401(2-3), 1997, pp. 409-413
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
401
Issue
2-3
Year of publication
1997
Pages
409 - 413
Database
ISI
SICI code
0168-9002(1997)401:2-3<409:UODISO>2.0.ZU;2-N
Abstract
When searching for the Higgs boson produced in e(+)e(-) collisions at energies close to the Z(0) mass, a method to reject a very large backg round is needed. A method to pick up the signal of a Higgs boson produ ced in association with a pair of neutrinos has been investigated. Aft er a preselection, which eliminates the majority of the background eve nts, a discriminant analysis was used to achieve a background rejectio n factor of 168 while keeping an efficiency for Higgs boson events of 68% for a Higgs boson mass of 55 GeV/c(2). For the combined preselecti on and discriminant analysis, the rejection factor is 50 000 and the e fficiency is 48%.