Szczegóły publikacji
Opis bibliograficzny
Measurement of the cross-section for $b$-jets produced in association with a Z boson at $\sqrt{s} = 7$ TeV with the ATLAS detector / G. Aad, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], I. GRABOWSKA-BOŁD, [et al.], M. IDZIK, [et al.], K. JELEŃ, [et al.], D. KISIELEWSKA, [et al.], S. KOPERNY, [et al.], T. Z. KOWALSKI, [et al.], B. MINDUR, [et al.], E. RULIKOWSKA-ZARĘBSKA, [et al.] // Physics Letters. B, Nuclear Elementary Particle and High-Energy Physics ; ISSN 0370-2693. — 2012 — vol. 706 iss. 4–5, s. 295–313. — Bibliogr. s. 301, Abstr. — ATLAS Collaboration. — Publikacja dostępna online od: 2011-12-01. — T. Bołd, I. Grabowska-Bołd – pierwsza afiliacja: University of California Irvine
Autorzy (3026)
Słowa kluczowe
Dane bibliometryczne
ID BaDAP | 64694 |
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Data dodania do BaDAP | 2012-03-07 |
Tekst źródłowy | URL |
DOI | 10.1016/j.physletb.2011.11.059 |
Rok publikacji | 2012 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Czasopismo/seria | Physics Letters, B |
Abstract
A measurement is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of s=7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately 36 pb-1. The event selection requires a Z boson decaying into high pT electrons or muons, and at least one b-jet, identified by its displaced vertex, with transverse momentum pT>25 GeV and rapidity |y|<2.1. After subtraction of background processes, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found to be in good agreement with perturbative QCD predictions at next-to-leading order.