Szczegóły publikacji
Opis bibliograficzny
Search for invisibly decaying Higgs bosons with large decay width using the OPAL detector at LEP / G. Abbiendi [et al.], M. PRZYBYCIEŃ, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2007 — vol. 49 iss. 2, s. 457–472. — Bibliogr. s. 471–472, Abstr. — Publikacja dostępna online od: 2006-12-06. — M. Przybycień - pierwsza afiliacja: CERN, European Organisation for Nuclear Research, Geneva, Switzerland
Autorzy (208)
- AGHPrzybycień Mariusz
- Abbiendi Giovanni
Dane bibliometryczne
| ID BaDAP | 32558 |
|---|---|
| Data dodania do BaDAP | 2007-04-02 |
| Tekst źródłowy | URL |
| DOI | 10.1140/epjc/s10052-006-0170-x |
| Rok publikacji | 2007 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | European Physical Journal, C |
Abstract
This paper describes a topological search for an invisibly decaying Higgs boson, H, produced via the Bjorken process (e(+)e(-)-> HZ). The analysis is based on data recorded using the OPAL detector at LEP at centre-of-mass energies from 183 to 209 GeV corresponding to a total integrated luminosity of 629 pb(-1). In the analysis only hadronic decays of the Z boson are considered. A scan over Higgs boson masses from 1 to 120 GeV and decay widths from 1 to 3000 GeV revealed no indication for a signal in the data. From a likelihood ratio of expected signal and standard model background we determine upper limits on cross-section times branching ratio to an invisible final state. For moderate Higgs boson decay widths, these range from about 0.07 pb (M(H)=60 GeV) to 0.57 pb (M(H)=114 GeV). For decay widths above 200 GeV the upper limits are of the order of 0.15 pb. The results can be interpreted in general scenarios predicting a large invisible decay width of the Higgs boson. As an example we interpret the results in the so-called stealthy Higgs scenario. The limits from this analysis exclude a large part of the parameter range of this scenario experimentally accessible at LEP 2.
