Szczegóły publikacji
Opis bibliograficzny
Measurement of the angle between jet axes in Pb-Pb collisions at $\sqrt{s_{NN}}=$ 5.02 TeV / S. Acharya, [et al.], B. BALIŚ, [et al.], M. GORGOŃ, [et al.], A. HORZYK, [et al.], M. JABŁOŃSKI, [et al.], J. P. KITOWSKI, [et al.], S. D. KORYCIAK, [et al.], T. M. LELEK, [et al.], R. W. MARCJAN, [et al.], P. G. RUSSEK, [et al.] // Physical Review . C ; ISSN 2469-9985. — Tytuł poprz.: Physical Review. C, Nuclear Physics ; ISSN: 0556-2813. — 2026 — vol. 113 iss. 4 art. no. 044905, s. 044905-1–044905-14. — Bibliogr. s. 044905-7–044905-9, Abstr. — Publikacja dostępna online od: 2026-04-13
Autorzy (1063)
Dane bibliometryczne
| ID BaDAP | 167240 |
|---|---|
| Data dodania do BaDAP | 2026-05-12 |
| Tekst źródłowy | URL |
| DOI | 10.1103/5bdl-cry6 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, C |
Abstract
This paper presents the first measurement of the angle between different jet axes (denoted as ΔRaxis) in Pb-Pb collisions. The measurement is carried out in the 0–10 % most-central events at sNN=5.02 TeV. Jets are assembled by clustering charged particles at midrapidity using the anti-kT algorithm with resolution parameters R=0.2 and 0.4 and transverse momenta in the intervals 40<pTchjet<140GeV/c and 80<pTchjet<140GeV/c, respectively. Measurements at these low transverse momenta enhance the sensitivity to quark-gluon plasma (QGP) effects. A comparison to models implementing various mechanisms of jet energy loss in the QGP suggests that the observed narrowing of the Pb-Pb distribution relative to pp can be explained if quark-initiated jets are more likely to emerge from the medium than gluon-initiated jets. These new measurements disfavor intrajet pT broadening as implemented in a simple model calculation with the Baier-Dokshitzer-Mueller-Peigne-Schiff formalism for energy loss in the QGP. The comparison of Pb-Pb and pp collisions shows sensitivity to the angular scale at which the QGP can resolve two independent splittings, favoring mechanisms that incorporate incoherent energy loss.
