DK I = 0, D K ¯ I = 0, 1 scattering and the D s 0 ∗ (2317) from lattice QCD
Cheung, Gavin K. C.
Wilson, David J.
Ryan, Sinéad M.
Journal of High Energy Physics
Springer Berlin Heidelberg
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Cheung, G. K. C., Thomas, C. E., Wilson, D. J., Moir, G., Peardon, M., & Ryan, S. M. (2021). DK I = 0, D K ¯ I = 0, 1 scattering and the D s 0 ∗ (2317) from lattice QCD. Journal of High Energy Physics, 2021 (2)https://doi.org/10.1007/jhep02(2021)100
Abstract: Elastic scattering amplitudes for I = 0 DK and I = 0, 1 DK¯ are computed in S, P and D partial waves using lattice QCD with light-quark masses corresponding to mπ = 239 MeV and mπ = 391 MeV. The S-waves contain interesting features including a near-threshold JP = 0+ bound state in I = 0 DK, corresponding to the Ds0∗(2317), with an effect that is clearly visible above threshold, and suggestions of a 0+ virtual bound state in I = 0 DK¯. The S-wave I = 1 DK¯ amplitude is found to be weakly repulsive. The computed finite-volume spectra also contain a deeply-bound D* vector resonance, but negligibly small P -wave DK interactions are observed in the energy region considered; the P and D-wave DK¯ amplitudes are also small. There is some evidence of 1+ and 2+ resonances in I = 0 DK at higher energies.
Regular Article - Theoretical Physics, Lattice field theory simulation, QCD Phenomenology
External DOI: https://doi.org/10.1007/jhep02(2021)100
This record's URL: https://www.repository.cam.ac.uk/handle/1810/317567
Attribution 4.0 International (CC BY 4.0)
Licence URL: https://creativecommons.org/licenses/by/4.0/