1. The problem statement, all variables and given/known data I am given this state, which is the result of a lamba particle decaying into a proton and neutral pion. Initial j = 3/2. The final state can theoretically be written as: I have already determined that: alpha_p = Sqrt[2/3] beta_p = Sqrt[1/3] alpha_d = -/+ Sqrt[2/5] beta_d = +/- Sqrt[3/5] (hopefully that's correct) Express the above state vector in the coordinate basis and show that the angular distribution of the two final state particles is given by, 2. Relevant equations I know that the coordinate basis function will be psi(r) = <r|psi> 3. The attempt at a solution I just have no idea how to calculate <r|psi> on a state vector that only has angular momentum eigenvalues shown (with some coefficients). If someone can point me in the right direction, I would really, really appreciate it.