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  • Springer Science and Business Media LLC  (2)
  • Lu, Meng  (2)
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  • Springer Science and Business Media LLC  (2)
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  • 1
    Online Resource
    Online Resource
    Searching for heavy leptoquarks at a muon collider
    Springer Science and Business Media LLC ; 2021
    In:  Journal of High Energy Physics Vol. 2021, No. 12 ( 2021-12)
    Details
    In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2021, No. 12 ( 2021-12)
    Abstract: The LHCb Collaboration recently gave an update on testing lepton flavour universality with B + → K + ℓ + ℓ − , in which a 3.1 standard deviations from the standard model prediction was observed. The g-2 experiment also reports a 3.3 standard deviations from the standard model on muon anomalous magnetic moment measurement. These deviations could be explained by introducing new particles including leptoquarks. In this paper, we show the possibility to search for heavy spin-1 leptoquarks at a future TeV scale muon collider by performing studies from three channels: 1) same flavour final states with either two bottom or two light quarks, 2) different flavour quark final states, and 3) a so-called “VXS” process representing the scattering between a vector boson and a leptoquark to probe the coupling between leptoquark and tau lepton. We conclude that a 3 TeV muon collider with 3 ab − 1 of integrated luminosity is already sufficient to cover the leptoquark parameter space in order to explain the LHCb lepton flavour universality anomaly.
    Type of Medium: Online Resource
    ISSN: 1029-8479
    URL: Article
    DOI: 10.1007/JHEP12(2021)047
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2027350-2
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    Online Resource
  • 2
    Online Resource
    Online Resource
    A comparative study of Z′ mediated charged lepton flavor violation at future lepton colliders
    Springer Science and Business Media LLC ; 2023
    In:  Journal of High Energy Physics Vol. 2023, No. 3 ( 2023-03-24)
    Details
    In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2023, No. 3 ( 2023-03-24)
    Abstract: Charged lepton flavor violation (CLFV) represents a transition between charged leptons of different generations that violates lepton flavor conservation, which is a clear signature of possible new physics beyond the standard model. By exploiting a typical example model of extra Z′ gauge boson, we perform a detailed comparative study on CLFV searches at several future lepton colliders, including a 240 GeV electron-positron collider and a TeV scale muon collider. Based on detailed signal and background Monte-Carlo studies with fast detector simulations, we derive the potentials in searching for Z′ mediated CLFV couplings with eμ , eτ and μτ of different future colliders. The results are compared with the current and prospect limits set by either low-energy experiments or the high-energy LHC experiments. The sensitivity of the τ related CLFV coupling strength at future lepton colliders will be significantly improved in comparison to the current best constraints and the prospect constraints for the μτ channel.
    Type of Medium: Online Resource
    ISSN: 1029-8479
    URL: Article
    DOI: 10.1007/JHEP03(2023)190
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2027350-2
    Location Call Number Limitation Availability
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