K0S and Λ (¯¯¯¯Λ) two-particle femtoscopic correlations in PbPb collisions at √sNN= 5.02 TeV

Авторы: Belyaev Andrey, Boos E.E., Ershov A.A., A Gribushin, Kaminskiy A., Khein L., Kodolova O.L., Korotkikh V.L., Obraztsov S.V., Petrushanko S.V., Savrin V.I., Snigirev A.M., Vardanyan I., CMS Collaboration
Журнал: Physics Letters B
Том: 857
Год издания: 2024
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 138936
DOI: 10.1016/j.physletb.2024.138936
Аннотация: Two-particle correlations are presented for K0S, Λ, and ¯¯¯¯Λ strange hadrons as a function of relative momentum in lead-lead collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The dataset corresponds to an integrated luminosity of 0.607 nb−1 and was collected using the CMS detector at the CERN LHC. These correlations are sensitive to quantum statistics and to final-state interactions between the particles. The source size extracted from the K0SK0S correlations is found to decrease from 4 to 1 fm in going from central to peripheral collisions. Strong interaction scattering parameters (i.e., scattering length and effective range) are determined from the ΛK0S and ΛΛ (including their charge conjugates) correlations using the Lednicky-Lyuboshitz model and are compared to theoretical and other experimental results.
Добавил в систему: Петрушанко Сергей Владимирович

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