Measurements of decay asymmetry parameters of charmed baryons,e.g.,Ξ0c,provide more data to test the W-emission and W-exchange mechanisms controlled by strong and weak interactions.Taking advantage of the spin polari...Measurements of decay asymmetry parameters of charmed baryons,e.g.,Ξ0c,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 the e^+e^-→Ξ0cΞ0c process.We analyze the transverse polarization spontaneously produced in this process and the spin transfer in the subsequent Ξc decays.The sensitivity to measure the asymmetry parameters is estimated for the decay Ξc→Ξ0π.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.,Ξ0c,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 the e^+e^-→Ξ0cΞ0c process.We analyze the transverse polarization spontaneously produced in this process and the spin transfer in the subsequent Ξc decays.The sensitivity to measure the asymmetry parameters is estimated for the decay Ξc→Ξ0π.
