Azimuthal angle correlations of muons produced via heavy-flavor decays in 5.02 TeV Pb + Pb and pp collisions with the ATLAS detector
Angular correlations between heavy quarks provide a unique probe of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions. Results are presented of a measurement of the azimuthal angle correlations between muons originating from semileptonic decays of heavy quarks produced in 5.02...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
17 May 2024
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| In: |
Physical review letters
Year: 2024, Jahrgang: 132, Heft: 20, Pages: 1-23 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.132.202301 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.132.202301 Verlag, kostenfrei, Volltext: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.202301 
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| Verfasserangaben: | G. Aad et al. (ATLAS Collaboration) |
MARC
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| 245 | 1 | 0 | |a Azimuthal angle correlations of muons produced via heavy-flavor decays in 5.02 TeV Pb + Pb and pp collisions with the ATLAS detector |c G. Aad et al. (ATLAS Collaboration) |
| 264 | 1 | |c 17 May 2024 | |
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| 500 | |a Gesehen am 25.06.2025 | ||
| 500 | |a ATLAS Collaboration: G. Aad, L.M. Baltes, F. Bartels, M.M. Czurylo, F. Del Rio, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S. M. Weber, M. Wessels, J. Zinsser [und 2924 weitere] | ||
| 500 | |a Im Titel ist "pp" kursiv geschrieben | ||
| 520 | |a Angular correlations between heavy quarks provide a unique probe of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions. Results are presented of a measurement of the azimuthal angle correlations between muons originating from semileptonic decays of heavy quarks produced in 5.02 TeV Pb+Pb and collisions at the LHC. The muons are measured with transverse momenta and pseudorapidities satisfying T>4 GeV and ||<2.4, respectively. The distributions of azimuthal angle separation Δ for muon pairs having pseudorapidity separation |Δ|>0.8, are measured in different Pb +Pb centrality intervals and compared to the same distribution measured in collisions at the same center-of-mass energy. Results are presented separately for muon pairs with opposite-sign charges, same-sign charges, and all pairs. A clear peak is observed in all Δ distributions at Δ∼, consistent with the parent heavy-quark pairs being produced via hard-scattering processes. The widths of that peak, characterized using Cauchy-Lorentz fits to the Δ distributions, are found to not vary significantly as a function of Pb +Pb collision centrality and are similar for and Pb +Pb collisions. This observation will provide important constraints on theoretical descriptions of heavy-quark interactions with the quark-gluon plasma. | ||
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