Charmless and Strangless Nonleptonic B Decays

Abstract

Decay rates of the B-meson are studied through charmless and strangless transitions into pi, rho, omega and gamma systems. The important features of these modes are their clean signatures. The CLEO II collaboration has recently reported the value BR(B^0 --> pi^+ pi^-) = (1.3_{-0.6}^{+0.8} +/- 0.2)x10^{-5}. This value test our approach to nonleptonic B-decays within the standard model (SM). Since B --> gamma gamma is far beyond our experimental reach, we believe that the correct determination of the order of magnitude ~10^{-10} for BR(B --> gamma gamma) provides the most reliable value needed at this moment. The most recent experimental report by the CLEO collaboration on BR(B --> K* gamma) = (4.5 +/- 1.5 +/- 0.9)x10^{-5} represents a confirmation of our SM prediction for the B --> K* gamma decay. This experimental result, despite of its great importance for the SM and the physics beyond the SM, enables us to predict the value BR(B --> rho gamma) ~ (3.5 +/- 3.3)x10^{-6}.