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Charmless and strangless nonleptonic B decays

Josip Trampetić ; Department of Theoretical Physics, Ruđer Boąković Institute, P.O. Box 1016, 41001 Zagreb, Croatia

Sažetak

Decay rates of the B-meson are studied through charmless and strangless transitions into π, ρ , ω and γ systems. The important features of these modes are their clean signatures. The CLEO II collaboration has recently reported the value BR(B0 → π +π −) = (1.3 +0.8 −0.6 ± 0.2) × 10−5 . This value is tests our approach to nonleptonic B-decays within the standard model (SM). Since B → γγ is far beyond our experimental reach, we believe that the correct determination of the order of magnitude ∼ 10−10 for BR(B → γγ) provides the most reliable value needed at this moment. The most recent experimental report by the CLEO collaboration on BR(B → K∗γ) = (4.5 ± 1.5 ± 0.9) × 10−5 represents a confirmation of our SM prediction for the B → K∗γ 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 → ργ) ∼= (3.5 ± 3.3) × 10−6 .

Ključne riječi

Hrčak ID:

303047

URI

https://hrcak.srce.hr/303047

Datum izdavanja:

2.5.1993.

Podaci na drugim jezicima: hrvatski

Posjeta: 497 *