Электронный каталог

Статья

Aad, G.
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&sub(NN)=5.02 TeV with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, G.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.R.Didenko, M.I.Gostkin, S.N.Karpov, Z.M.Karpova, U.Kruchonak, V.Kukhtin, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, T.Turtuvshin, A.Tropina, A.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, [ATLAS Collab.]. – Text: electronic // Physical Review C. – 2025. – Vol. 111, No. 4. – P. 044909. – URL: https://doi.org/10.1103/PhysRevC.111.044909. – Bibliogr.: 57.

This paper presents a measurement of jet-track correlations in photon-jet events, using 1.72 nb&sup(−1) of Pb+Pb data at √s&sub(NN) = 5.02 TeV 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 (p&sub(T)) in the range 0.5–2.0 GeV in the hemisphere opposite to the jet, |*Dφ(jet,track)| > π/2, is measured as a function of their relative pseudorapidity difference, |*Dη(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 |*D*h(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.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами