Szczegóły publikacji
Opis bibliograficzny
Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of $\alpha_{s}$ / S. Chekanov [et al.], L. ADAMCZYK, T. BOŁD, I. GRABOWSKA-BOŁD, D. KISIELEWSKA, A. M. KOWAL, M. KOWAL, T. KOWALSKI, M. PRZYBYCIEŃ, L. SUSZYCKI, D. SZUBA, J. SZUBA, [et al.] // Physics Letters. B, Nuclear Elementary Particle and High-Energy Physics ; ISSN 0370-2693. — 2003 — vol. 558 iss. 1–2, s. 41–58. — Bibliogr. s. 57–58, Abstr.
Autorzy (342)
Dane bibliometryczne
| ID BaDAP | 14027 |
|---|---|
| Data dodania do BaDAP | 2003-09-29 |
| Tekst źródłowy | URL |
| DOI | 10.1016/S0370-2693(03)00216-8 |
| Rok publikacji | 2003 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physics Letters, B |
Abstract
The subjet multiplicity has been measured in neutral current e(+) p interactions at Q(2) > 125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb(-1). Jets were identified in the laboratory frame using the longitudinally invariant k(T) cluster algorithm. The number of jet-like substructures within jets, known as the subjet multiplicity, is defined as the number of clusters resolved in a jet by reapplying the jet algorithm at a smaller resolution scale y(cut). Measurements of the mean subjet multiplicity, <n(sbj)>, for jets with transverse energies E-T,E-jet > 15 GeV are presented. Next-to-leading-order perturbative QCD calculations describe the measurements well. The value of alpha(s) (M-Z), determined from <n(sbj)> at y(cut) = 10(-2) for jets with 25 < E-T,E-jet < 71 GeV, is alpha(s) (M-Z) = 0.1187 +/- 0.0017(stat.)(-0.0009)(+0.0024)(syst.)(-0.0076)(+0.0093)(th.). (C) 2003 Published by Elsevier Science B.V.
