In recent years,neutrino-nucleus scattering has been extensively researched to investigate nuclear structures and interactions between neutrinos and nucleons.In this study,a charged-current quasielastic(CCQE)neutrino-...In recent years,neutrino-nucleus scattering has been extensively researched to investigate nuclear structures and interactions between neutrinos and nucleons.In this study,a charged-current quasielastic(CCQE)neutrino-nucleus scattering model is developed to explore the nuclear mean-field dynamics and short-range correlation effects.In this model,the effect of the nuclear structure is depicted using the scaling function f(ψ),whereas the neutrino-nucleon interaction is represented by the elementary weak cross sectionσ_(0).The results indicate that the double-differential cross section of the scattered muon is influenced by the energy E and mo mentum p of the nucleon in the nuclei,and the total cross section depends primarily on the incident neutrino energy E_(ν).Furthermore,incorporating short-range correlations results in the flux-integrated differential cross sections in the high-T_(μ)region producing larger values,a longer tail,and achieving better experimental consistency.It eventually elucidates the physical relationship between the neutrino-nucleus scattering cross section and variation in the incident neutrino energy.This paper shares insights for the research on nucleon dynamics and presents detailed investigations of the neutrino-nucleus scattering mechanism.展开更多
A series of new physics scenarios predict the existence of the extra charged gauge boson W’,which can induce charged-current(CC)non-standard neutrino interactions(NSIs).The theoretical constraints on the simplified W...A series of new physics scenarios predict the existence of the extra charged gauge boson W’,which can induce charged-current(CC)non-standard neutrino interactions(NSIs).The theoretical constraints on the simplified W’model and further on the CC NSI parameters ε_(αβ)^-qq'Y from partial wave unitarity and W’decays are considered.The sensitivity of the process pp→W’→lv to the W’model at the LHC and high-luminosity(HL)LHC experiments is investigated by estimating the expected constraints on ε_(αβ)^-qq'Y (α=β=e orμ)using a Monte-Carlo(MC)simulation.We find that the interference effect plays an important role,and the LHC can strongly constrain ε_(αβ)^-qq'L .Compared with those at the 13 TeV LHC with L=139 fb^(-1),the expected constraints at the 14TeV LHC with L=3 ab^(-1)can be strengthened to approximately one order of magnitude.展开更多
Neutrino-induced nuclear reactions play a crucial role in astrophysical nucleosynthesis.When a supernova explodes,the neutrino shockwave interacts with the outer material of the star to induce the neutrino-process(vpr...Neutrino-induced nuclear reactions play a crucial role in astrophysical nucleosynthesis.When a supernova explodes,the neutrino shockwave interacts with the outer material of the star to induce the neutrino-process(vprocess),which is essential for elucidating heavy element synthesis and the exotic abundance distribution of protonrich nuclei.In this study,the cross sections of neutrino-nucleus reactions are deduced using the nuclear gross theory of beta decay(GTBD).The calculation results of^(12)C(ν_(e),e^(-))^(12)N_(g.s.),^(16)O(ν_(e),e^(-))^(16)F,^(56)Fe(ν_(e),e^(-))^(56)Co,and^(208)Pb(ν_(e),e^(-))^(208)Bi reactions are consistent with those predicted using the QRPA,Hybrid,RPA,and pnQRPA models within an order of magnitude.These results are reasonable given our current knowledge of neutrino-nucleus reactions.Building on this foundation,we propose a semi-empirical parametrization formula that describes the spectrumweighted cross section of supernova neutrinos as a function of neutrino effective temperature.This formula is instrumental in the development of a convenient database for neutrino-nucleus reaction cross sections.Such a database is anticipated to streamline the process of accessing cross section data,thereby enhancing the efficiency of model calculations based on nuclear astrophysical networks.展开更多
基金supported by the National Natural Science Foundation of China(12475135,12035011)by the Shandong Provincial Natural Science Foundation,China(ZR2020MA096)by the Fundamental Research Funds for the Central Universities(22CX03017A)。
文摘In recent years,neutrino-nucleus scattering has been extensively researched to investigate nuclear structures and interactions between neutrinos and nucleons.In this study,a charged-current quasielastic(CCQE)neutrino-nucleus scattering model is developed to explore the nuclear mean-field dynamics and short-range correlation effects.In this model,the effect of the nuclear structure is depicted using the scaling function f(ψ),whereas the neutrino-nucleon interaction is represented by the elementary weak cross sectionσ_(0).The results indicate that the double-differential cross section of the scattered muon is influenced by the energy E and mo mentum p of the nucleon in the nuclei,and the total cross section depends primarily on the incident neutrino energy E_(ν).Furthermore,incorporating short-range correlations results in the flux-integrated differential cross sections in the high-T_(μ)region producing larger values,a longer tail,and achieving better experimental consistency.It eventually elucidates the physical relationship between the neutrino-nucleus scattering cross section and variation in the incident neutrino energy.This paper shares insights for the research on nucleon dynamics and presents detailed investigations of the neutrino-nucleus scattering mechanism.
基金Supported by the National Natural Science Foundation of China(11875157,12147214)the Natural Science Foundation of the Liaoning Scientific Committee(LJKZ0978)the Outstanding Research Cultivation Program of Liaoning Normal University(21GDL004)。
文摘A series of new physics scenarios predict the existence of the extra charged gauge boson W’,which can induce charged-current(CC)non-standard neutrino interactions(NSIs).The theoretical constraints on the simplified W’model and further on the CC NSI parameters ε_(αβ)^-qq'Y from partial wave unitarity and W’decays are considered.The sensitivity of the process pp→W’→lv to the W’model at the LHC and high-luminosity(HL)LHC experiments is investigated by estimating the expected constraints on ε_(αβ)^-qq'Y (α=β=e orμ)using a Monte-Carlo(MC)simulation.We find that the interference effect plays an important role,and the LHC can strongly constrain ε_(αβ)^-qq'L .Compared with those at the 13 TeV LHC with L=139 fb^(-1),the expected constraints at the 14TeV LHC with L=3 ab^(-1)can be strengthened to approximately one order of magnitude.
基金Supported by the National Natural Science Foundation of China (12475151, 12405164)the Continuous-Support Basic Scientific Research Project(BJ010261223284)。
文摘Neutrino-induced nuclear reactions play a crucial role in astrophysical nucleosynthesis.When a supernova explodes,the neutrino shockwave interacts with the outer material of the star to induce the neutrino-process(vprocess),which is essential for elucidating heavy element synthesis and the exotic abundance distribution of protonrich nuclei.In this study,the cross sections of neutrino-nucleus reactions are deduced using the nuclear gross theory of beta decay(GTBD).The calculation results of^(12)C(ν_(e),e^(-))^(12)N_(g.s.),^(16)O(ν_(e),e^(-))^(16)F,^(56)Fe(ν_(e),e^(-))^(56)Co,and^(208)Pb(ν_(e),e^(-))^(208)Bi reactions are consistent with those predicted using the QRPA,Hybrid,RPA,and pnQRPA models within an order of magnitude.These results are reasonable given our current knowledge of neutrino-nucleus reactions.Building on this foundation,we propose a semi-empirical parametrization formula that describes the spectrumweighted cross section of supernova neutrinos as a function of neutrino effective temperature.This formula is instrumental in the development of a convenient database for neutrino-nucleus reaction cross sections.Such a database is anticipated to streamline the process of accessing cross section data,thereby enhancing the efficiency of model calculations based on nuclear astrophysical networks.
