A1 Journal article (refereed)
Studying the interaction between charm and light-flavor mesons (2024)

ALICE Collaboration. (2024). Studying the interaction between charm and light-flavor mesons. Physical Review D, 110(3), Article 032004. https://doi.org/10.1103/physrevd.110.032004

JYU authors or editors

Publication details

All authors or editors: ALICE Collaboration

Journal or series: Physical Review D

ISSN: 2470-0010

eISSN: 2470-0029

Publication year: 2024

Publication date: 05/08/2024

Volume: 110

Issue number: 3

Article number: 032004

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/physrevd.110.032004

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/96645

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2401.13541

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 ffiffi s p ¼ 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, 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.

Keywords: particle physics

Free keywords: hadron-hadron interactions; strong interaction; charmed mesons

Contributing organizations

Related projects

Ministry reporting: Yes

VIRTA submission year: 2024

Preliminary JUFO rating: 2