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Physics Letters B
We present a complete analytical solution to the quantum problem of a particle in the Yukawa potential, using supersymmetry and a systematic expansion of the corresponding super-potentials. Results for the critical screening of the ground state improve in several figures existing results based on both numerical solutions and approximation methods. Our calculation to order (a 0 /D) 2 for the squared ground state wavefunction at the origin, which enter in darkonium transitions, yields adoi:10.1016/j.physletb.2021.136218 fatcat:dp3amk2lf5fk5fliwtond5oqcm