Szczegóły publikacji
Opis bibliograficzny
Di-jet production in photon-photon collisions at $\sqrt{s_{ee}}$ from 189 to 209 GeV / G. Abbiendi, [et al.], M. PRZYBYCIEŃ, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2003 — vol. 31 iss. 3, s. 307–325. — Bibliogr. s. 324–325, Abstr.
Autorzy (209)
- AGHPrzybycień Mariusz
- Abbiendi Giovanni
Dane bibliometryczne
| ID BaDAP | 14790 |
|---|---|
| Data dodania do BaDAP | 2003-12-10 |
| Tekst źródłowy | URL |
| DOI | 10.1140/epjc/s2003-01360-8 |
| Rok publikacji | 2003 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | European Physical Journal, C |
Abstract
Di-jet production is studied in collisions of quasi-real photons at e(+)e(-) centre-of-mass energies roots(ee) from 189 to 209 GeV at LEP. The data were collected with the OPAL detector. Jets are reconstructed using an inclusive k(perpendicular to)-clustering algorithm for all cross-section measurements presented. A cone jet algorithm is used in addition to study the different structure of the jets resulting from either of the algorithms. The inclusive di-jet cross-section is measured as a function of the mean transverse energy (E) over bar (jet)(T) of the two leading jets, and as a function of the estimated fraction of the photon momentum carried by the parton entering the hard sub-process, x(gamma), for different regions of (E) over bar (jet)(T). Angular distributions in di-jet events are measured and used to demonstrate the dominance of quark and gluon initiated processes in different regions of phase space. Furthermore the inclusive di-jet cross-section as a function of \eta(jet)\ and \Deltaeta(jet)\ I is presented, where eta(jet) is the jet pseudo-rapidity. Different regions of the x(gamma)(+)-x(gamma)(-)-space are explored to study and control the influence of an underlying event. The results are compared to next-to-leading order perturbative QCD calculations and to the, predictions of the leading order Monte Carlo generator PYTHIA.
