Rare two-body decays of the top quark into a bottom meson plus an up or charm quark

Abstract

Rare two-body decays of the top quark into a neutral bottom-quark meson plus an up-or charm-quark: t → B 0 +u, c; t → B

Top-quark decay into Upsilon-meson

“…and is very similar to previous result [5]. At the same time this quantity is 2.5 smaller then result from [6]. This difference can be explained by the fact that authors used contributions of both color singlet and color octet to this decay channel (see [6] for details).…”

“…within NRQCD Color Singlet model approach. This width was calculated previously in [5,6]. For the sake of completeness we repeat the evaluation of this quantity.…”