Szczegóły publikacji
Opis bibliograficzny
Production rates of $b\bar{b}$ quark pairs from gluons and ${b\bar{b}b\bar{b}}$ events in hadronic ${Z^{0}}$ decays / G. Abbiendi [et al.], M. PRZYBYCIEŃ [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2001 — vol. 18, s. 447–460. — Bibliogr. s. 460, Abstr.
Autorzy (299)
- AGHPrzybycień Mariusz
- Abbiendi Giovanni
Dane bibliometryczne
| ID BaDAP | 8163 |
|---|---|
| Data dodania do BaDAP | 2002-02-20 |
| DOI | 10.1007/s100520100580 |
| Rok publikacji | 2001 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | European Physical Journal, C |
Abstract
The rates are measured per hadronic Z(0) decay for gluon splitting to b (b) over bar quark pairs, g(b (b) over bar), and of events containing two b (b) over bar quark pairs, g(4b), using a sample of four-jet events selected from data collected with the OPAL detector. Events with an enhanced signal of gluon splitting to b (b) over bar quarks are selected if two of the jets are close in phase-space and contain detached secondary vertices. For the event sample containing two b (b) over bar quark pairs, three of the four jets are required to have a significantly detached secondary vertex. Information from the event topology is combined in a likelihood fit to extract the values of g(b (b) over bar) and g(4b), namely g(b (b) over bar) = (3.07 +/- 0.53(stat) +/- 0.97(syst)) x 10(-3), g(4b) = (0.36 +/- 0.17(stat) +/- 0.27(syst)) x 10(-3).
