Coupled rearrangement channel calculation of the fine and hyperfine structures of the antiprotonic helium atom - art. no. 012518

We precisely calculate the fine and hyperfine structure splittings of the ( v,J) = (1,35) state in the antiprotonic helium atom, when v is the vibratio nal quantum number and J is the total orbital angular momentum. The coupled rearrangement channel method is employed to efficiently describe correlati on effects in the three-body system with atomic and molecular characters. A n accuracy of better than alpha (2)approximate to 50 ppm has been achieved. The result obtained is in good agreement with the previous calculation wit hin similar to 200 ppm. We also examine the con elation effects, in particu lar orbital polarization effects.