Exclusive modes of proton decay in SU(5)

We compute two-body branching ratios in proton decay in the SU(5) Grand Unification scheme. Using spin-flavor symmetries, we obtain algebraic relations between the matrix elements. The absolute magnitude is fixed from non-leptonic decays of hyperons. Pion modes are very important due to phase space, and ωe + is quite sizeable due to its large matrix element. We find also an important K 0 μ + fraction. Bound state effects are quite crucial since we get a lifetime at the edge of the experimental limits, τ, (p) ≈ 10 31 yr for M X = 6 × 10 14 GeV.