B mesons ∗
نویسنده
چکیده
B̄ → Dπ, D∗π, J/ψK̄ and J/ψπ decays are studied. Their amplitude is given by a sum of factorized and non-factorizable ones. The latter which is estimated by using a hard pion approximation is rather small in color favored B̄ → Dπ and D∗π decays but still can efficiently interfere with the main amplitude given by the factorization. In the color suppressed B̄ → J/ψK̄ and J/ψπ decays, the non-factorizable contribution is very important. The sum of the factorized and non-factorizable amplitudes can reproduce well the existing experimental data on the branching ratios for the color favored B̄ → Dπ and D∗π and the color suppressed B̄ → J/ψK̄ and J/ψπ decays by taking reasonable values of unknown parameters involved. PACS numbers: 13.25.Hw, 11.30.Hv, 11.40.Ha Typeset using REVTEX ∗Revised edition of YITP-97-26 1
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تاریخ انتشار 1997