An analytical study of a source of Beauty mesons (B mesons) by the Strong decay of ϒ(11020) is performed to obtain various modes of B mesons. The non-relativistic quark model framework is used to predict the masses of the bottomonium mesons. The strong decay of the ϒ(11020) state is calculated utilizing Quark Pair Creation model. In addition, the branching ratio of the strong decay has been calculated for each decay width and using them to estimate the number of B-meson pairs for each strong decay width. The results show reasonable agreement with recent Particle Data Group data, in particular with the total strong decay width of ϒ(11020). The ϒ(11020) particle is expected to be a good candidate for the conventional ϒ(6S) state and provides both types of strange and non-strange B mesons. We found new conclusions for the strong decay widths of the ϒ(11020) in the relativistic phase space. The strong width of the B∗B∗ channel is predicted to be the highest width by the ratio (∼ 51%) concerning higher vector ϒ(11020) State. In addition, the specific Bs B∗ s channel is expected to be the highest width relative to higher ϒ resonances.
In this paper, we have studied the spectrum of bottomonium mesons behavior under the effect of three types of potentials inspired by Quantum Chromodynamics. In addition, other properties like Hyperfine splitting behavior, and Fine splitting behavior have been studied. We used these potential models within the non-relativistic quark model to present this study. We found that our expectations are consistent with experimental data and other theoretical works as well we presented new conclusions regarding the spectrum of unseen bottomonium states for S, P, and D-wave bottomonia. And we have expected other their characteristics.
A radiation source based on the inertial electrostatic confinement fusion (IECF) system is being developed for multidisciplinary research applications. The radiation outputs from the IECF system are 2.45 MeV fast neutrons and the associated co-generated X-rays with an energy less than 3 MeV. A radiation shielding study has been performed on five types of concrete to define the most efficient material for the shielding design of the system. The proposed materials were ilmenite-magnetite concrete (IMC), ordinary concrete-1 (OC-1), barite-containing concrete (BC), ordinary concrete-2 (OC-2), and serpentine-containing concrete (SC). A numerical model was applied to determine the effective removal cross-section coefficients (∑Rt) for the fast neutrons and the total mass attenuation coefficients (µm), the half-value layer (HVL), the mean free path (MFP), the effective atomic number (Zeff), and effective electron density (Neff) for photons inside the materials. The model considered the radiation source energy and the material properties of the concrete types. The results revealed that the serpentine-containing concrete exhibited the highest ∑Rt with 12 cm of concrete thickness needed to attenuate an incident neutron flux to 1/100 of its initial value. In addition, the BC shows the highest µm with a 38 cm concrete thickness needed to attenuate the 3 MeV energy X-ray flux to 1/100 of its initial value. This study suggests that a 40 cm thickness of SC or BC adequately shields the radiation generated from an IECF system with a maximum particle production rate of up to 1 × 107 n/s.
Widely applied to both light and heavy meson decay and standing as one of the most successful strong decay models is the \(^{3}P_{0}\) model, in which \(q\bar{q}\) pair production is the dominant mechanism. In the present, we use the bound-state corrected version of the \(^{3}P_{0}\), called the C\(^{3}P_{0}\) model, to calculate the decay widths of the charmonium \(J^{PC}=1^{--}\) states, nominally \(J/\psi\), \(\psi (2S)\), \(\psi (3770)\), \(\psi (4040)\), \(\psi (4160)\), \(\psi (4415)\) and \(\psi (4660)\) to several common channels.
In this work, we studied the lead borate glass composites to optimize its shielding properties of thermal neutrons and gamma-rays for Boron Neutron Capture Therapy (BNCT) applications. Attenuation coefficients, half-value layer (HVL), and tenth-value layer (TVL) were measured for a broad range of gamma-ray energies, i.e., 356, 511, 662, 1173, 1274, and 1332 keV experimentally. Theoretical results using XCOM software show an agreement with the NaI(Tl) detector-based experimental measurements. The attenuation of collimated thermal neutrons, from Cf-252 source, was simulated using Monte Carlo-based code and compared experimentally with measurements by BF3 detector. A reasonable agreement between simulations and experiments was observed, suggesting that the shielding properties of lead borate glass (LBG) composites are monotonically increasing with the increasing of the lead and boron additives.
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.
To calculate the complete fusion cross section over partial waves, as a function of the excitation energy, the maximum value of angular momentum lmax represents the upper limit of that summation. An effective definition for that limit has been checked. Also a comparison with the fusion and critical limits, lfus and lcr respectively, has been displayed. The effects of the nuclear part, of the barrier height and the approximation technique have been checked to approach the best fit of the measured fusion excitation functions
In this work, we use the C3P0 model to calculate the decay widths of the low lying charmonium JPC = 1−− states, nominally J/ψ(1S) and ψ(2S), in the following common channels: ρ π, ω η, ω η′, K*+ K−, 
, ϕ η, ϕ η′.
In this work, we use the C3P0 model to calculate the decay widths of the low lying charmonium JPC=1−− states, nominally J/ψ(1S) and ψ(2S), in the following common channels: ρπ, ωη, ωη′, K∗+K−, K∗0K¯0, ϕη, ϕη′.
