Research On Charged Lepton Flavor Violation Process J/??e?/??

At present,the standard model explains almost all the physical events observed by human beings.It is the situation that the standard model is difficult to break through that leads to the stagnation of experimental physics.At present,many people think that looking for new physics that breaks through the standard model may be a breakthrough for human physics to leap again.The discovery of neutrino oscillation declares that neutrinos may have tiny mass,and if neutrinos really have tiny mass,it is likely that the flavor number of lepton decay will not be conserved.The existence of the process strictly forbidden under the existing standard model framework is likely to be the first step for human beings to explore new physics.Over the past 50 years,generation after generation of high energy physics experimenters have made unremitting efforts to continuously study the flavor destruction process of charged leptons.Experiments such as Babar,Atlas and CMS have continuously lowered the upper limit of the flavor destruction process of charged leptons.The second generation of BES has analyzed 58 million J/? The results show that J/??e ? The upper limit of the process is 8.3 × 10-6 J/???? Upper limit of process<2.0× 10-6;Subsequently,about 225 million J/? were studied in the third generation bes experiment J/? Finally,the upper bound of branching ratio is calculated Br(J/??e ?)<1.6 × 10-7?In this paper,880 million J/? were collected in 18 and 19 years by the third generation Beijing Spectrometer Experiment/? Examples are used to find the flavor destruction process of charged leptons J/??e? And J/???? Process.However,due to the use of blind analysis strategy,considering the current research stage of this paper,we temporarily keep the data secret in the signal area,the paper finally calculates the value under 90%confidence J/??e? And J/???? The single case sensitivity of S(J/? e?)=2.5 × 10-7 and S(J/????)=2.6 × 10-7?...