Abstract
The light-cone distribution amplitudes (LCDAs) serve as important nonperturbative inputs for the study of hard exclusive processes. In this paper, we calculate ten LCDAs at twist-2 for the S-wave and P-wave B c mesons up to the next-to-leading order (NLO) of the strong coupling α s and leading order of the velocity expansion. Each one of these ten LCDAs is expressed as a product of a perturbatively calculable distribution and a universal NRQCD matrix-element. By use of the spin symmetry, only two NRQCD matrix-elements will be involved. The reduction of the number of non-perturbative inputs will improve the predictive power of collinear factorization.
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Xu, J., Yang, D. The leading twist light-cone distribution amplitudes for the S-wave and P-wave Bc mesons. J. High Energ. Phys. 2016, 98 (2016). https://doi.org/10.1007/JHEP07(2016)098
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DOI: https://doi.org/10.1007/JHEP07(2016)098