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A bstract The Born cross sections of the processes e ⁺ e − → ωπ ⁰ and e ⁺ e − → ωη are measured at center-of-mass energies between 3.773 and 4.701 GeV using a total integrated ...
L explanation for the muon g-2 discrepancy for ϕ L masses below 4 GeV [5]. 2.2 Search for Heavy Neutral Leptons Produced in Tau Decays Heavy Neutral Leptons are predicted by theories that explain neutrino mass generation [10]. When their mass is at the GeV-scale, they can also address the baryon asymmetry of the universe [10].
15 Δεκ 2022 · In this paper, we study the CDF W -mass, the muon \ (g-2\), and the DM observables in a local \ (U (1)_ {L_\mu -L_\tau }\) model in which a singlet vector-like lepton, a doublet vector-like lepton and a complex singlet X field are introduced in addition to the \ (U (1)_ {L_\mu -L_\tau }\) gauge boson \ (Z'\) [80] and a complex singlet \ ( { { {\...
Recently, the CMS collaboration reported an accurate measurement of the W mass, which is 80360 ± 9. 9 MeV [43].The W boson mass, at tree level is equal to g ν / 2, where ν = 246 GeV is the vacuum expectation value of the Higgs field and g denotes the weak isospin coupling parameter. If new particles are present, the W boson mass is expected to receive additional loop corrections.
26 Ιουλ 2013 · We show that the correlation between contributions to the muon mass and muon $g\ensuremath{-}2$ is controlled by the mass of the neutrino originating from the doublet $L$. Positive correlation, simultaneously explaining both measured values, requires this mass below 200 GeV.
These anomalies include a significant deviation of the experimental results for the muon anomalous magnetic moment from its Standard Model prediction, with a confidence level of 5.1 σ; a joint observation by the CMS and ATLAS collaborations of a diphoton excess with a local significance of 3.1 σ in the invariant mass distribution around 95.4 ...
1 Σεπ 2020 · We consider a gauged \ ( \mathrm {U} { (1)}_ {L_ {\mu }- {L}_ {\tau }} \) extension of the left-right symmetric theory in order to simultaneously explain neutrino mass, mixing and the muon anomalous magnetic moment.
