“KMI Theory and E-lab joint seminar” 16th July (Tue)  16：00 –

• Date: July 16th (Tue) 16:00 – 17:00
• Place: ES635
• Speaker: C.S. Kim (Department of Physics, Yonsei University, Korea)
• Title: Practical Dirac-Majorana Confusion Theorem: Issues and Applicability

Abstract

We inspect the model-independent study of practical Dirac Majorana confusion the
orem (pDMCT) – a wide spread belief that the difference between Dirac and Majorana 
neutrinos via  any kinematical observable would be practically impossible to determine 
because of the difference only being proportional to the square of neutrino mass –
in context of processes that have at least a neutrino antineutrino pair in their final state. 
We scrutinize the domain of applicability of pDMCT and also highlight those aspects that 
are often misunderstood. We try to clarify some of the frequently used concepts that are 
used to assert pDMCT as a generic feature irrespective of the process, or observable,
such as the existence of any analytic continuity between Dirac and Majorana neutrinos in 
the limit $m_\nu \to 0$. In summary, we illustrate that pDMCT is not any fundamental 
property of neutrinos, instead,  it is a phenomenological feature of neutrino non-observation, 
depending on models and processes.