On the Mass Eigenstate Purity of B^8 Solar Neutrinos
  We give a brief report on our recent paper, hep-ph/0601198, in which we calculate the nu_2 mass eigenstate purity of B^8 solar neutrinos as 91 +/- 2 %. 
Stephen Parke, Hiroshi Nunokawa and Renata Zukanovich Funchal