Hadronic Charmless B Decays at the SLD

Rare decays of beauty particles were studied in several two-body exclusive hadronic charmless modes using the 19.4 pb^-1 Z-pole data collected with the SLD detector at SLAC from 1993 to 1998. These decays are mediated by both tree level b {yields} u and one-loop penguin b {yields} s, d transitions. Upper limits for the branching ratios are set for the investigated modes B_s, B₀ {yields} P⁺P^-, B⁺ {yields} V P⁺ and B_s, B⁰ {yields} V V , where the pseudoscalar particle P⁺ is either {pi}⁺ or K⁺ and the vector particle V is either {rho}⁰, K^{* 0} or {phi}. Using an event selection algorithm consisting of a set of hard cuts combined with a set of discriminator functions, the efficiencies range between 24% and 37% with near zero background