We study the heavy-light mesons within basis light-front quantization. The resulting mass spectra of D, Ds, B, and Bs agree reasonably well with experiments. We also predict states which could be measured in the near future. In the light-front formalism, we calculate the light-front wave functions and additional experimental observables, such as parton distribution functions, distribution amplitudes, and decay constants by means of integrations over light-front wave functions. We also provide ratios of decay constants for selected pseudoscalar meson decays (Ds to D and Bs to B) as they may prove to be theoretically more robust and more reliably determined in experiments. We find that our ratios are systematically smaller than existing experiments and other approaches by 5–18%.
Bibliographical noteFunding Information:
We wish to thank S. Jia, M. Li, W. Qian, and A. Yu for fruitful discussions. S.T. and J.P.V. wish to thank Dr. Soeren Prell for valuable advice. This work was supported in part by the U.S. Department of Energy under Grants Nos. DE-FG02-87ER40371 and DE-SC0018223 (SciDAC-4/NUCLEI). Computational resources were provided by the National Energy Research Supercomputer Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
© 2020, The Author(s).