| A large number of astronomical observations have shown that the most of matter in the universe don’t light,this kind of matter is called dark matter,the research about dark matter will help us to understand the nature of our universe.However,even if so many efforts have been paid to dark matter research,there is still not any breakthrough,the recent experiments and observations could bring new clues too dark matter domain.In my master training,based on these new phenomenon(W boson mass anomaly)and new data(LHAASO’s electron observations),I major in detecting and constraining on dark matter by gamma rays and cosmic ray electrons from Fermi-LAT and LHAASO.The first work predicts Large High Altitude Air Shower Observatory(LHAASO)’s ability to constrain the parameter space of decay dark matter from CR electrons observation,LHAASO have made a lots of achievements in γ ray domain,the another target of LHAASO is measuring the CRs electrons and LHAASO has a unprecented sensitivity for observation of CR electrons in ultrahigh-energy.However,because LHAASO can’t completely distinguish hardons and leptons,in the meanwhile,the observed all-particles spectrum have a strong flux,we predict that LHAASO could observe a high background contaminations from hadrons after separation.Based on this expection,we attempt to calculate expected CR electrons background and discuss its ability to detect dark matter in 5yr LHAASO’s observation.We find that LHAASO’s electron observations could improve existing constraints ～ 2 orders of magnitude when systematic errors are not included.The second work in this paper is study for the abnormities of W boson mass:Recently,the measurement of W boson indicating its mass will be likely more than standard model(SM)with a more than 7σ probabiliy,strongly suggesting the existence of model beyond SM.(Inert 2 Higgs doulet model,i2HDM)is a simplest model able to interpret the excess,which may also interpret the excess of γ rays and anti-protons flux in galactic center(GC).Based on the above,we try to test the i2 HDM parameters simultaneously interpreting these three excess in galactic dwarf spheriodal galaxies(dsphs),our result exclude the most of parameter space,but the corresponding results is strongly influenced by the measurement of astrophysical J factor.In the end of the paper,I simply conclude this paper and decscribe the my possible future research project. |
