The Greatest Ellusionist : Mystery of The Ghost Particle

Abstract

The Physics of neutrino has been going through a revolutionary phase in recent period. While standard model of particle physics has been extremely successful for other observable particles, it fails to harmonize mass for neutrinos, which are necessary to describe the phenomena of neutrino oscillations observed by several different experiments. The present study is an attempt to revisit the theory and phenomenology of neutrino physics which has a potential for exploring the Physics beyond the standard model, making it extremely useful for our fundamental understanding of this mysterious nature. This piece of work tries to analyse all the latest developments along with major findings on the subject. The emphasis of the present study is on neutrino oscillations which, given their implication on neutrino masses, and being an observable phenomenon could be explored in the domain where results are not describable in the standard model, such as presence of majorana neutrinos and gaining of mass without interaction with Higgs field. Moreover, the recent results obtained from KATRIN experiment, Karlsruhe, Germany is very encouraging and promising, and they have setup the new upper limit for neutrino mass is 0.8 eV. We have briefly highlighted the ongoing status of India based neutrino observatory (INO) for neutrino detection. Finally, this research article ends with a brief self-composed poem about ghost particle (neutrinos).