A detailed study is presented about sources of B-mesons by strong decay of r(4S), r(5S) triplet-spin states in S-wave bb bottomonium mesons. We introduce the start point ot institute the strong decay of bb bottomonium mesons physics to get the sources of B-mesons that we can pass from during their rare decay to a new world of physics, the so-called BSM(Beyond Standard Model) or New Physics(NP) and probe its deeps; that's an important because a Theory of Everything(ToE) is striven to it from through New Physics theories. We use the 3P0 model or so-called quark pair creation model (QPC) to calculate the strong decay of r(4S), r(5S) triplet-spin states in S-wave bb bottomonium mesons. Strong decay ratio is calculated for every state. The results show a good fit with other theoretical results and with recent experimental data.