Measurements of decay asymmetry parameters of charmed baryons,e.g.,■,provide more data to test the W-emission and W-exchange mechanisms controlled by strong and weak interactions.Taking advantage of the spin polariza...Measurements of decay asymmetry parameters of charmed baryons,e.g.,■,provide more data to test the W-emission and W-exchange mechanisms controlled by strong and weak interactions.Taking advantage of the spin polarization in charmed baryon decays,we investigate the possibility to measure weak decay asymmetry parameters in thee^+e^-→■ process.We analyze the transverse polarization spontaneously produced in this process and the spin transfer in the subsequent■ decays.The sensitivity to measure the asymmetry parameters is estimated for the decay■→■.展开更多
We obtain the global attractivity and global asymptotical stability of positive equilibria to a 3-dimensional Richards model with delays. Our results do not depend on the size-asymmetry parameter which measures the de...We obtain the global attractivity and global asymptotical stability of positive equilibria to a 3-dimensional Richards model with delays. Our results do not depend on the size-asymmetry parameter which measures the degree of the curvature of size-growth among individuals over the entire growth curve, and the shape parameter which affects the shape of model curve. Lastly, we gave a numerical simulation to verify the feasibility of our main results.展开更多
基金Supported by the National Natural Science Foundation of China(11875262,11805037,11705078)Joint Large-Scale Scientific Facility Funds of the NSFC and CAS(U1832121)+1 种基金Shanghai Pujiang Program(18PJ1401000)Open Research Program of Large Research Infrastructures(2017),Chinese Academy of Sciences
文摘Measurements of decay asymmetry parameters of charmed baryons,e.g.,■,provide more data to test the W-emission and W-exchange mechanisms controlled by strong and weak interactions.Taking advantage of the spin polarization in charmed baryon decays,we investigate the possibility to measure weak decay asymmetry parameters in thee^+e^-→■ process.We analyze the transverse polarization spontaneously produced in this process and the spin transfer in the subsequent■ decays.The sensitivity to measure the asymmetry parameters is estimated for the decay■→■.
基金supported by the National Natural Science Foundation of China (No.39970112 and 30470268)China-Germany Agricultural Cooperation Research Project (No.06/07 and 08/09)
文摘We obtain the global attractivity and global asymptotical stability of positive equilibria to a 3-dimensional Richards model with delays. Our results do not depend on the size-asymmetry parameter which measures the degree of the curvature of size-growth among individuals over the entire growth curve, and the shape parameter which affects the shape of model curve. Lastly, we gave a numerical simulation to verify the feasibility of our main results.
