“…The corresponding expansions, including the expansions in scattering lengths for both s and p partial waves and the generic expansions with the µ c ( , l) ≈ µ c (0, l) approximation, have essentially the same accuracy. Other expansions that make use of both the energy-and the l-independence of µ c are examples of universal properties at length scale β 6 [21,23,26,28] described by a single parameter, be it µ c (0, 0) or a 0s . They are very useful for qualitative understanding, and should also work well quantitatively for the first few partial waves.…”