@article{965607d18d2e4e2fba309e7e251b6fe9,
title = "Azimuthal Angle Correlations of Muons Produced via Heavy-Flavor Decays in 5.02 TeV Pb+Pb and pp Collisions with the ATLAS Detector",
abstract = "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 Formula Presented and Formula Presented collisions at the LHC. The muons are measured with transverse momenta and pseudorapidities satisfying Formula Presented and Formula Presented, respectively. The distributions of azimuthal angle separation Formula Presented for muon pairs having pseudorapidity separation Formula Presented, are measured in different Formula Presented centrality intervals and compared to the same distribution measured in Formula Presented 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 Formula Presented distributions at Formula Presented, 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 Formula Presented distributions, are found to not vary significantly as a function of Formula Presented collision centrality and are similar for Formula Presented and Formula Presented collisions. This observation will provide important constraints on theoretical descriptions of heavy-quark interactions with the quark-gluon plasma.",
author = "Filmer, \{E. K.\} and Grant, \{C. M.\} and P. Jackson and Kong, \{A. X.Y.\} and Pandya, \{H. D.\} and H. Potti and Ruggeri, \{T. A.\} and Ting, \{E. X.L.\} and White, \{M. J.\} and Gingrich, \{D. M.\} and Lindon, \{J. H.\} and N. Nishu and Pinfold, \{J. L.\} and O. Cakir and Yildiz, \{H. Duran\} and S. Kuday and \{Turk Cakir\}, I. and S. Sultansoy and \{Adam Bourdarios\}, C. and O. Arnaez and N. Berger and Castillo, \{F. L.\} and F. Costanza and M. Delmastro and \{Di Ciaccio\}, L. and T. Hryn{\textquoteright}ova and S. J{\'e}z{\'e}quel and I. Koletsou and J. Lev{\^e}que and Lewis, \{D. J.\} and Little, \{J. D.\} and \{Lorenzo Martinez\}, N. and G. Poddar and \{Sanchez Pineda\}, A. and E. Sauvan and G. Bernardi and M. Bomben and A. Li and T. Li and G. Marchiori and K. Nakkalil and Q. Shen and Y. Zhang and S. Chekanov and S. Darmora and Hopkins, \{W. H.\} and J. Hoya and J. Love and Luongo, \{N. A.\} and Citron, \{Z. H.\} and S. Istin and Y. Afik and R. Wang and Seabra, \{L. F.Oleiro\} and H. Abreu and E. Kajomovitz and A. Laurier and D. Melini and Y. Rozen and S. Tarem and L. Moleri and C. Appelt and O. Kuprash and Biswal, \{J. P.\} and H. Abramowicz and L. Barak and U. Barron and G. Bella and Y. Benhammou and E. Etzion and Frid, \{Y. Y.\} and G. Koren and Lutz, \{M. S.\} and R. Nayak and G. Ninio and \{Pascual Dominguez\}, L. and D. Reikher and \{Salvador Salas\}, A. and A. Soffer and Tamir, \{N. M.\} and D. Vannicola",
note = "Publisher Copyright: {\textcopyright} 2024 CERN, for the ATLAS Collaboration.",
year = "2024",
month = may,
day = "17",
doi = "10.1103/PhysRevLett.132.202301",
language = "American English",
volume = "132",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Institute of Physics",
number = "20",
}