Speaker
Description
The electron decay and its Pauli exclusion principle (PEP), being the basis of the quantum mechanics, have not been proved experimentally. Using the energy spectra of NaI(Tl) crystals in COSINE-100, the electron stability and the PEP violation process have been searched. We fit for X-ray signals in iodine that are emitted when the K- or L-shell electron decays into three neutrinos for the electron stability. For the PEP violation, we search for X-ray signals when an L-shell electron transitions to the already-filled K-shell. Sensitivities of year for the electron lifetime and year for the PEPV lifetime have been obtained.
The preliminary fits using COSINE-100 data of 38.62 kgyear for the electron lifetime and 44.77 kgyear for the PEP violation will be presented in this poster.
