Semileptonic b -> (d)over-bar transition in a nuclear medium
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KünyeAzizi, K., Er, N., & Sundu, H. (2015). Semileptonic b -> (d)over-bar transition in a nuclear medium. Physical Review D, 91(3), 1-11. http://dx.doi.org/10.1103/PhysRevD.91.034026
We study the semileptonic tree-level B -> (D) over bar transition in the framework of QCD sum rules in a nuclear medium. In particular, we calculate the in-medium form factors entering the transition matrix elements defining this decay channel. It is found that the interactions of the participating particles with the medium lead to a considerable suppression in the branching ratio compared to the vacuum.