Matches in SemOpenAlex for { <https://semopenalex.org/work/W3104754611> ?p ?o ?g. }
- W3104754611 abstract "A bstract We propose the local ( B − L ) μτ model, which minimally retains the local B − L extension for the sake of neutrino phenomenologies, and at the same time presents an invisible gauge boson Z′ with mass ∼ 𝒪 (10) MeV to account for the discrepancy of the muon anomalous magnetic moment. However such a scenario is challenged by flavor physics. To accommodate the correct pattern of Cabibbo-Kobayashi-Maskawa matrix, we have to introduce either a SU(2) L doublet flavon or vector-like quarks plus a singlet flavon. In either case Z′ induces flavor changing neutral current (FCNC) in the quark sector at tree-level. We find that the former scheme cannot naturally suppress the FCNC from the down-type quark sector and thus requires a large fine-tuning to avoid the stringent K → πν $$ overline{v} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mover> <mml:mi>v</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> bound. Whereas the latter scheme, in which FCNC merely arises in the up-type quark sector, is still free of strong constraint. In particular, it opens a new window to test our scenario by searching for flavor-changing top quark decay mode t → u/c +(invisible), and the typical branching ratio ∼ 𝒪 (10 − 4 )." @default.
- W3104754611 created "2020-11-23" @default.
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- W3104754611 date "2019-11-01" @default.
- W3104754611 modified "2023-10-16" @default.
- W3104754611 title "(g − 2)μ versus flavor changing neutral current induced by the light (B − L)μτ boson" @default.
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- W3104754611 doi "https://doi.org/10.1007/jhep11(2019)049" @default.
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