@article{3195128,
    title = "Pion-kaon femtoscopy and the lifetime of the hadronic phase in Pb-Pb
collisions at root(S)(NN)=2 . 76 TeV",
    author = "Acharya, S. and Adamova, D. and Adler, A. and Adolfsson, J. and and Aggarwal, M. M. and Agha, S. and Rinella, G. Aglieri and Agnello, M. and and Agrawal, N. and Ahammed, Z. and Ahmad, S. and Ahn, S. U. and Akbar, Z. and and Akindinov, A. and Al-Turany, M. and Alam, S. N. and Albuquerque, D. and S. D. and Aleksandrov, D. and Alessandro, B. and Alfanda, H. M. and and Molina, R. Alfaro and Ali, B. and Ali, Y. and Alici, A. and and Alizadehvandchali, N. and Alkin, A. and Alme, J. and Alt, T. and and Altenkamper, L. and Altsybeev, I and Anaam, M. N. and Andrei, C. and and Andreou, D. and Andronic, A. and Angeletti, M. and Anguelov, V and and Anticic, T. and Antinori, F. and Antonioli, P. and Apadula, N. and and Aphecetche, L. and Appelshaeuser, H. and Arcelli, S. and Arnaldi, R. and and Arratia, M. and Arsene, I. C. and Arslandok, M. and Augustinus, A. and and Averbeck, R. and Aziz, S. and Azmi, M. D. and Badala, A. and Baek, Y. 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    journal = "PHYSICS LETTERS B",
    year = "2021",
    volume = "813",
    publisher = "Elsevier",
    issn = "0370-2693",
    doi = "10.1016/j.physletb.2020.136030",
    abstract = "In this paper, the first femtoscopic analysis of pion-kaon correlations
at the LHC is reported. The analysis was performed on the Pb-Pb
collision data at root(S)(NN) = 2.76 TeV recorded with the ALICE
detector. The non-identical particle correlations probe the
spatio-temporal separation between sources of different particle species
as well as the average source size of the emitting system. The sizes of
the pion and kaon sources increase with centrality, and pions are
emitted closer to the centre of the system and/or later than kaons. This
is naturally expected in a system with strong radial flow and is
qualitatively reproduced by hydrodynamic models. ALICE data on pion-kaon
emission asymmetry are consistent with (3+1)-dimensional viscous
hydrodynamics coupled to a statistical hadronisation model, resonance
propagation, and decay code THERMINATOR 2 calculation, with an
additional time delay between 1 and 2 fm/c for kaons. The delay can be
interpreted as evidence for a significant hadronic rescattering phase in
heavy-ion collisions at the LHC. (C) 2020 The Author. Published by
Elsevier B.V."
}