My present research work is mainly related to the particle physics phenomenology, with emphasis on B-Physics program at the LHC and Super-B factories. The Standard Model (SM) of particle physics, which is a theory of electromagnetic, weak, and strong interactions mediating the dynamics of the known particles, is surely not a complete theory of fundamental interactions even though almost all predictions of this model are consistent with data; the only missing component of SM, Higgs Boson, has been recently observed at CERN which resulted in 2013 Nobel Prize in Physics. The fact that it fails to account for the matter-antimatter asymmetry of the Universe, it does not comprehend gravity, it includes no dark matter candidates, it cannot account for dark energy , SM can only be considered as an effective theory of a more general theory. Flavor physics is one of the most promising ways to explore physics beyond SM by precision measurements that can look for the virtual production of new particles in quantum loops. The currently running LHCb experiment at CERN has already provided several tantalizing hints of beyond SM physics. Also, the upcoming experiments at Belle-II, Japan have immense potential to convert some of the current signatures into possible discoveries of new physics and hence reveal the ultimate secrets of the Universe.
Apart from flavor physics, I am also working in neutrino physics. Since the discovery of neutrinos and neutrino oscillations, resulting in physics Noble Prizes in 1988, 1995, 2002 and 2015, neutrino physics has been probing new physics in various different ways. Neutrino physics has been one of the most exciting activities in physics ever since their existence was first proposed by Wolfgang Pauli in 1930. The well established phenomenon of neutrino oscillations has provided a deep insight into our understanding of mass. Yet there are many unsolved puzzles, such as the observation of CP violation in the leptonic sector, resolving mass hierarchy problem in neutrinos, existence of sterile neutrinos, identifying whether neutrinos are Dirac or Majorana particles, dark matter searches. Further, the relic neutrinos are the most abundant known, but not yet detected, relic particles in the Universe, next to the Cosmic Microwave Background (CMB) radiation. Detection of relic neutrinos can thus be the key to unraveling some of the extremely early universe's best-kept secrets. The present and future planned experimental facilities in neutrino sector aims at resolving many of these unsolved puzzles.
I am also working on the interface of particle physics and quantum information theory. Quantum correlations is a central topic of investigations in the quest for an understanding as well as for the harvesting of the power of quantum mechanics in a plethora of systems provided by nature, be they come from quantum optics, involving photons or condensed matter systems, for e.g., spin systems. Inspired by the recent technical advances in high energy physics experiments, in particular the meson factories and the long baseline neutrino experiments, this quest can now be directed towards subatomic physics. The foundations of quantum mechanics are usually studied in optical or electronic systems. Here the detection efficiency is much lower than that of the corresponding detectors at the high energy frontier experiments. Thus these systems will provide an alternative platform for testing foundations of quantum mechanics.