Fe-based metallic glasses have garnered significant attention due to their low coercivity force and core loss.Enhancing the saturation magnetic flux density(Bs)of Fe-based metallic glasses is crucial for their industr...Fe-based metallic glasses have garnered significant attention due to their low coercivity force and core loss.Enhancing the saturation magnetic flux density(Bs)of Fe-based metallic glasses is crucial for their industry applications.This work constructed a dataset comprising330 training data and 157 test data.The support vector regression model surpassed the tree-based ensemble models in the test set and demonstrated comparable accuracy to the tree-based ensemble models in the training set.Additionally,we proposed an indicator for Bsbased on symbolic regression.This newly proposed indicator exhibits a Pearson correlation coefficient exceeding 0.92 with Bs.The present work provides a simple and accurate formula for predicting the Bsof Fe-based amorphous alloys,demonstrating the effectiveness of machine learning approaches in discovering novel soft magnetic materials.展开更多
The magnetic moment(a_(γ))and weak magnetic moment(a_(W))of charged leptons and quarks are sensitive to quantum effects of new physics heavy resonances.In effective field theory,aγand aW are induced by two independe...The magnetic moment(a_(γ))and weak magnetic moment(a_(W))of charged leptons and quarks are sensitive to quantum effects of new physics heavy resonances.In effective field theory,aγand aW are induced by two independent operators.Therefore,one has to measure both a_(γ) and a_(w) to shed light on new physics.The aw’s of the SM fermions are measured at the LEP.In this work,we analyze the contributions from magnetic and weak magnetic moment operators in the processes of pp→H_(γ)and gg→H→τ^(+)τ^(-)γ at the High-Luminosity Large Hadron Collider.We demonstrate that the two processes can cover most of the parameter space that cannot be probed at the LEP.展开更多
We show that the signature of two boosted W-jets plus substantial missing energy is very promising for probing heavy charged resonances(X^(±))through the process of pp→X^(+)X^(-)→W^(+)W^(-)X^(0) X^(0),where X^(...We show that the signature of two boosted W-jets plus substantial missing energy is very promising for probing heavy charged resonances(X^(±))through the process of pp→X^(+)X^(-)→W^(+)W^(-)X^(0) X^(0),where X^(0) denotes the dark matter candidate.The hadronic decay mode of the W boson is considered to maximize the number of signal events.When the mass split between X±and X0 is large,the jet-substructure technique must be utilized to analyze the boosted W-jet.Here,we consider the process of chargino pair production at the LHC,i.e.,pp→χ^(+)_(1)χ^(-)_(1)→W^(+)W^(-)χ^(0)_(1)χ^(0)_(1),and demonstrate that the proposed signature is able to cover more parameter space of m_(χ1)^(±)and m_(χ1)0,than the conventional signature of multiple leptons plus missing energy.More importantly,the signature of interest is not sensitive to the spin of heavy resonances.展开更多
One method of probing new physics beyond the Standard Model is to check the correlation among higher-dimensional operators in the effective field theory.We examine the strong correlation between the processes pp→tHq ...One method of probing new physics beyond the Standard Model is to check the correlation among higher-dimensional operators in the effective field theory.We examine the strong correlation between the processes pp→tHq and pp tq,which both depend on the same three operators.The correlation indicates that,according to the data of pp→tq,σ_(tHq)=[106.8±64.8]fb,which is significantly below the current upper limitσ_(tHq)≤900 fb.展开更多
基金financially supported by Shanghai Pujiang Program(No.23PJ1403500)GuangDong Basic and Applied Basic Research Foundation(No.2023A1515110901)+2 种基金Shenzhen Pengcheng Peacock Project(No.NA11409004)the National Natural Science Foundation of China(Nos.U22B2064 and 51105102)and Shanghai Rising-Star Program Yangfan Project(No.23YF1411900)。
文摘Fe-based metallic glasses have garnered significant attention due to their low coercivity force and core loss.Enhancing the saturation magnetic flux density(Bs)of Fe-based metallic glasses is crucial for their industry applications.This work constructed a dataset comprising330 training data and 157 test data.The support vector regression model surpassed the tree-based ensemble models in the test set and demonstrated comparable accuracy to the tree-based ensemble models in the training set.Additionally,we proposed an indicator for Bsbased on symbolic regression.This newly proposed indicator exhibits a Pearson correlation coefficient exceeding 0.92 with Bs.The present work provides a simple and accurate formula for predicting the Bsof Fe-based amorphous alloys,demonstrating the effectiveness of machine learning approaches in discovering novel soft magnetic materials.
基金Supported in part by the National Science Foundation of China(11725520,11675002,11635001,11805013,12075257)the Fundamental Research Funds for the Central Universities(2018NTST09)。
文摘The magnetic moment(a_(γ))and weak magnetic moment(a_(W))of charged leptons and quarks are sensitive to quantum effects of new physics heavy resonances.In effective field theory,aγand aW are induced by two independent operators.Therefore,one has to measure both a_(γ) and a_(w) to shed light on new physics.The aw’s of the SM fermions are measured at the LEP.In this work,we analyze the contributions from magnetic and weak magnetic moment operators in the processes of pp→H_(γ)and gg→H→τ^(+)τ^(-)γ at the High-Luminosity Large Hadron Collider.We demonstrate that the two processes can cover most of the parameter space that cannot be probed at the LEP.
基金Supported in part by the National Science Foundation of China(11725520,11675002,11635001,11805013,12075257)the Fundamental Research Funds for the Central Universities(2018NTST09)。
文摘We show that the signature of two boosted W-jets plus substantial missing energy is very promising for probing heavy charged resonances(X^(±))through the process of pp→X^(+)X^(-)→W^(+)W^(-)X^(0) X^(0),where X^(0) denotes the dark matter candidate.The hadronic decay mode of the W boson is considered to maximize the number of signal events.When the mass split between X±and X0 is large,the jet-substructure technique must be utilized to analyze the boosted W-jet.Here,we consider the process of chargino pair production at the LHC,i.e.,pp→χ^(+)_(1)χ^(-)_(1)→W^(+)W^(-)χ^(0)_(1)χ^(0)_(1),and demonstrate that the proposed signature is able to cover more parameter space of m_(χ1)^(±)and m_(χ1)0,than the conventional signature of multiple leptons plus missing energy.More importantly,the signature of interest is not sensitive to the spin of heavy resonances.
基金Supported in part by the National Science Foundation of China(11725520,11675002,11635001)。
文摘One method of probing new physics beyond the Standard Model is to check the correlation among higher-dimensional operators in the effective field theory.We examine the strong correlation between the processes pp→tHq and pp tq,which both depend on the same three operators.The correlation indicates that,according to the data of pp→tq,σ_(tHq)=[106.8±64.8]fb,which is significantly below the current upper limitσ_(tHq)≤900 fb.
