Szczegóły publikacji

Opis bibliograficzny

Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS / G. Aad, [et al.], L. ADAMCZYK, [et al.], P. BALEK, [et al.], T. BOŁD, [et al.], K. M. CIEŚLA, [et al.], W. DĄBROWSKI, [et al.], M. DYNDAŁ, [et al.], A. K. GILBERT, [et al.], I. GRABOWSKA-BOŁD, [et al.], K. W. JANAS, [et al.], S. KOPERNY, [et al.], I. K. ŁAKOMIEC, [et al.], K. MAJ, [et al.], B. MINDUR, [et al.], P. A. POTĘPA, [et al.], M. PRZYBYCIEŃ, [et al.], R. SIKORA, [et al.] // Physics Letters. B ; ISSN 0370-2693. — 2023 — vol. 846 art. no. 138154, s. 1–27. — Bibliogr. s. 10–11, Abstr. — Publikacja dostępna online od: 2023-08-29

Autorzy (2927)

Dane bibliometryczne

ID BaDAP149014
Data dodania do BaDAP2023-10-04
Tekst źródłowyURL
DOI10.1016/j.physletb.2023.138154
Rok publikacji2023
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Creative Commons
Czasopismo/seriaPhysics Letters, B

Abstract

Parton energy loss in the quark–gluon plasma (QGP) is studied with a measurement of photon-tagged jet production in 1.7 nb−1 of Pb+Pb data and 260 pb−1 of pp data, both at √sNN = 5.02 TeV, with the ATLAS detector. The process pp →γ+jet+X and its analogue in Pb+Pb collisions is measured in events containing an isolated photon with transverse momentum (pT) above 50 GeV and reported as a function of jet pT. This selection results in a sample of jets with a steeply falling pT distribution that are mostly initiated by the showering of quarks. The pp and Pb+Pb measurements are used to report the nuclear modification factor, RAA, and the fractional energy loss, Sloss, for photon-tagged jets. In addition, the results are compared with the analogous ones for inclusive jets, which have a significantly smaller quark-initiated fraction. The RAA and Sloss values are found to be significantly different between those for photon-tagged jets and inclusive jets, demonstrating that energy loss in the QGP is sensitive to the colour-charge of the initiating parton. The results are also compared with a variety of theoretical models of colour-charge-dependent energy loss.

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