Top-quark decay into Upsilon-meson

TL;DR

This paper calculates the rare decay rate of the top quark into an Upsilon-meson, W-boson, and b-quark, providing a branching ratio that could guide experimental searches at the LHC.

Contribution

It presents the first detailed calculation of the partial width and branching ratio for the rare t-quark decay into Upsilon-meson, W-boson, and b-quark.

Findings

Branching ratio for t -> Upsilon W b is approximately 1.3 x 10^{-5}.

The results suggest this decay could be observed at the LHC.

Provides theoretical groundwork for experimental detection of this rare decay.

Abstract

The calculation of the partial width of the rare t-quark decay into Upsilon-meson, W-boson and b-quark (t -> \Upsilon W b) is presented. The branching ratio equals Br(t -> Upsilon W b) = 1.3 * 10^{-5} that make possible searches for this rare $t$-quark decay at LHC.