Second-forbidden beta decay of ${^8}$B

The second-forbidden beta decay of ${^8}$B to the ground state of ${^8}$Be would result in the production of solar neutrinos with energies higher those currently expected. The presence of these neutrinos would be a background to a precise measurement of the ${^8}$B neutrino spectral shape, and to the detection of solar {\em hep} neutrinos. We will present an experimental limit on the branching ratio of this transition, and compare these results to a shell-model rate calculation.