Space-time evolution of heavy sterile neutrinos in cascade decays
DOI: 10.1016/J.NUCLPHYSB.2014.09.018
关键词: Charged current 、 Double beta decay 、 Neutrino 、 MAJORANA 、 Meson 、 Physics 、 Nuclear physics 、 Branching fraction 、 MiniBooNE 、 Particle physics 、 Sterile neutrino
摘要: Abstract Heavy sterile-like neutrinos may be produced resonantly from the decay of pseudoscalar mesons and into several different channels in a cascade Φ → L α ν h ; { X } . In general these are rare events with displaced vertices. We provide non-perturbative manifestly unitary framework that describes yields space–time evolution probabilities for sterile neutrinos, final states total number at far detector. The results general, valid Dirac or Majorana only input rates branching ratios production channels. apply to two examples “visible” decay: (i) K + e ( ) − via standard model charged current vertex (ii) radiative μ γ For this latter process we find substantial corrections previous assessments within parameter space argued solve anomalous excess electron-like MiniBooNE.
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128.84.21.199参考文章(105)
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