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Search for the jet-induced diffusion wake in the quark-gluon plasma via measurements of jet-track correlations in photon-jet events in Pb+Pb collisions at √s NN = 5.02 TeV with the ATLAS detector

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This paper presents a measurement of jet-track correlations in photon-jet events, using 1.72 nb−1 of Pb+Pb data at √𝑠𝑁⁢𝑁=5.02TeV recorded with the ATLAS detector at the LHC. Events with energetic photon-jet pairs are selected, where the photon and jet are approximately back-to-back in azimuth. The a...

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Autori principali: Aad, Georges (Autore) , Ackermann, Anke (Autore) , Baltes, Lisa Marie (Autore) , Bartels, Falk (Autore) , Dittmeier, Sebastian (Autore) , Dunford, Monica (Autore) , Junkermann, Thomas (Autore) , Mkrtchyan, Tigran (Autore) , Sanfilippo, Lorenzo (Autore) , Schöning, André (Autore) , Schultz-Coulon, Hans-Christian (Autore) , Sothilingam, Varsiha (Autore) , Stamen, Rainer (Autore) , Vigani, Luigi (Autore) , Wessels, Martin (Autore) , Zinßer, Joachim (Autore)
Ente Autore: ATLAS Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 22 April, 2025
In: Physical review
Year: 2025, Volume: 111, Fascicolo: 4, Pages: 044909-1-044909-22
ISSN:2469-9993
DOI:10.1103/PhysRevC.111.044909
Accesso online:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevC.111.044909
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.111.044909
Testo
Note sull'autore:G. Aad et al.∗ (ATLAS Collaboration)
Descrizione
Riassunto:This paper presents a measurement of jet-track correlations in photon-jet events, using 1.72 nb−1 of Pb+Pb data at √𝑠𝑁⁢𝑁=5.02TeV recorded with the ATLAS detector at the LHC. Events with energetic photon-jet pairs are selected, where the photon and jet are approximately back-to-back in azimuth. The angular correlation between jets and charged-particle tracks with transverse momentum (𝑝T) in the range 0.5-2.0 GeV in the hemisphere opposite to the jet, |Δ⁢𝜙(jet,track)|>𝜋/2, is measured as a function of their relative pseudorapidity difference, |Δ⁢𝜂(jet,track)|. In central Pb+Pb collisions, these correlations are predicted to be sensitive to the diffusion wake in the quark-gluon plasma resulting from the lost energy of high-𝑝T partons traversing the plasma, with a characteristic modification as a function of |Δ⁢𝜂(jet,track)|. The correlations are examined with different selections on the jet-to-photon 𝑝T ratio to select events with different degrees of energy loss. No diffusion wake signal is observed within the current sensitivity and upper limits at 95% confidence level on the diffusion wake amplitude are reported.
Descrizione del documento:*The ATLAS Collaboration: A. Ackermann, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, L. Sanfilippo, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser [und sehr viele weitere]
Gesehen am 17.08.2026
Descrizione fisica:Online Resource
ISSN:2469-9993
DOI:10.1103/PhysRevC.111.044909

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