Szczegóły publikacji
Opis bibliograficzny
Search for pair-produced neutralinos in events with photons and missing energy from $e^{+}e^{-}$ collisions at $\sqrt{s}=130-183$ GeV / P. Abreu [et al.], W. KUCEWICZ [et al.], B. MURYN [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 1999 — vol. 6 iss. 3, s. 371–384. — Bibliogr. s. 384, Abstr. — Publikacja dostępna online od: 1998-12-03. — B. Muryn - pierwsza afiliacja: Université de Grenoble, France
Autorzy (522)
- AGHKucewicz Wojciech
- AGHMuryn Bogdan
- Abreu Pedro F.
Dane bibliometryczne
| ID BaDAP | 733 |
|---|---|
| Data dodania do BaDAP | 2001-04-18 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s100520050349 |
| Rok publikacji | 1999 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | European Physical Journal, C |
Abstract
The events with two photons and missing (transverse) energy collected by the DELPHI detector at centre-of-mass energies between 130 GeV and 183 GeV have been studied to search for processes of the type e(+)e(-) –> YY with the subsequent decay Y –> X gamma, where X is an undetectable neutral particle. Reactions of this kind are expected in supersymmetric models, where the Y particle can be either the lightest neutralino, decaying to a photon and a gravitino, or the next-to-lightest neutralino, decaying to a photon and the lightest neutralino. To study the case of long-lived Y particles, a search for single-photon events with the reconstructed photon axis pointing far from the beam interaction region has also been performed. No evidence for a deviation from Standard Model expectations has been observed in the data and upper limits have been derived on the signal cross-section as a function of the the X and Y masses and of the Y mean decay path.
