Full counting statistics of incoherent Andreev transport

We studythe full counting statistics of heterostructures consisting of normalmetal parts connected to a superconducting terminal. Assuming that coherent superconducting correlations are suppressed in the normal metals, we show, using the Keldysh-Nambu Green s function approach, that the system can be mapped onto a purely normal system with twice the number of elements. For a superconducting beamsplitter with several normal terminals we obtain general results for the counting statistics