Szczegóły publikacji
Opis bibliograficzny
Measurement of the angle between jet axes in pp collisions at $\sqrt{s}$ = 5.02 TeV / S. Acharya, [et al.], B. BALIŚ, [et al.], R. J. DĘBSKI, [et al.], M. GORGOŃ, [et al.], A. HORZYK, [et al.], M. JABŁOŃSKI, [et al.], J. P. KITOWSKI, [et al.], S. D. KORYCIAK, [et al.], P. G. RUSSEK, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479 . — 2023 — iss. 7 art. no. 201, s. [1], 1–47. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 35–39, Abstr. — Publikacja dostępna online od: 2023-07-26
Autorzy (1036)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 151220 |
|---|---|
| Data dodania do BaDAP | 2024-01-18 |
| Tekst źródłowy | URL |
| DOI | 10.1007/JHEP07(2023)201 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | The Journal of High Energy Physics |
Abstract
This article reports measurements of the angle between differently defined jet axes in pp collisions at s = 5.02 TeV carried out by the ALICE Collaboration. Charged particles at midrapidity are clustered into jets with resolution parameters R = 0.2 and 0.4. The jet axis, before and after Soft Drop grooming, is compared to the jet axis from the Winner-Takes-All (WTA) recombination scheme. The angle between these axes, ∆R axis, probes a wide phase space of the jet formation and evolution, ranging from the initial high-momentum-transfer scattering to the hadronization process. The ∆R axis observable is presented for 20 < pTchjet < 100 GeV/c, and compared to predictions from the PYTHIA 8 and Herwig 7 event generators. The distributions can also be calculated analytically with a leading hadronization correction related to the non-perturbative component of the Collins-Soper-Sterman (CSS) evolution kernel. Comparisons to analytical predictions at next-to-leading-logarithmic accuracy with leading hadronization correction implemented from experimental extractions of the CSS kernel in Drell-Yan measurements are presented. The analytical predictions describe the measured data within 20% in the perturbative regime, with surprising agreement in the non-perturbative regime as well. These results are compatible with the universality of the CSS kernel in the context of jet substructure.
