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Article
Report number arXiv:2401.13541 ; CERN-EP-2024-013
Title Studying the interaction between charm and light-flavor mesons
Author(s) ALICE Collaboration  ყველა 1072 ავტორის ჩვენება
Corporate author(s) The ALICE collaboration
Publication 2024-08-01
Imprint 19 Jan 2024
Number of pages 26
Note 34 pages, 7 captioned figures, 6 tables, authors from page 28, published version, figures at http://alice-publications.web.cern.ch/node/10648
Published in: Phys. Rev. D 110 (2024) 032004
DOI 10.1103/PhysRevD.110.032004
Subject category Nuclear Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ALICE
Keywords QCD ; heavy quark production ; particle and resonance production ; particle correlations and fluctuations ; experimental results
Abstract The two-particle momentum correlation functions between charm mesons (D± and D±) and charged light-flavor mesons (π± and K±) in all charge-combinations are measured for the first time by the ALICE Collaboration in high-multiplicity proton-proton collisions at a center-of-mass energy of s=13 TeV. For DK and DK pairs, the experimental results are in agreement with theoretical predictions of the residual strong interaction based on quantum chromodynamics calculations on the lattice and chiral effective field theory. In the case of Dπ and Dπ pairs, a tension between the calculations including strong interactions and the measurement is observed. For all particle pairs, the data can be adequately described by Coulomb interaction only, indicating a shallow interaction between charm and light-flavor mesons. Finally, the scattering lengths governing the residual strong interaction of the Dπ and Dπ systems are determined by fitting the experimental correlation functions with a model that employs a Gaussian potential. The extracted values are small and compatible with zero.
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Copyright/License Preprint: © 2024 CERN (License: CC-BY-4.0)
Publication: © 2024 CERN (License: CC BY 4.0)
Submitted by zaida.conesa.del.valle@cern.ch



 


 ჩანაწერი შექმნილია 2024-01-19, ბოლოს შესწორებულია 2024-11-27


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2401.13541 - სრული ტექსტის ჩამოტვირთვაPDF
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