Abstract

Space and time, with their vastness and eternity, are thetwo integral parts for dynamical description of nature.But what are their true characters?This talk will be a non-technical review of the evolutionof concepts of space and time over the years from Newton to Einstein toHawking — a journey of unveiling eternal mysteries.

Abstract

The $mu$-from-$u$ supersymmetric standard model ($muu$SSM)offers a solution to the $mu$-problem and simultaneously accommodatemassive neutrinos through $R$-parity violation and a TeV scale seesawusing a set of right-handed neutrino superfields. In this model a verylightneutralino can still decay inside the LHC detector through an availableeven lighter scalar/pseudoscalar state, with light neutralino $ o$ lighterscalar/pseudoscalar + neutrino decay mode. We emphasize how thisunique feature can be utilized to study a non-standard Higgs signal at theLHC,with Higgs $ o$ a pair of light neutralino decay mode.We demonstrate how $muu$SSM can manifest itself through events withdisplaced multileptons at the LHC and provides unique signature for themodel.

Abstract

Abstract

Abstract

Use of radioisotopes or radiations has now been popular in different disciplines of sciences. Although nuclear reactor facilities have been the sole supplier of radioisotopes for a variety of applications, accessibly to the reactor is gradually decreasing. Alternatively, choice has been diversified from neutron rich to neutron deficient radionuclidesdue to the advancement in accelerator technology. However, production of neutron deficient radionuclides is not well explored in connection to their applications. My activities are mostly focused here. In this context, choice of radionuclide is an important issue where complete knowledge of nuclear and chemical data is mandatory. Nuclear reaction data helps to optimise the production parameters and chemical data an important helps to ensure the purity and quality of the product. Thus production of radioisotopes and preparation of radiotracers urges interdisciplinary research. In view of the growing demand, large number of nuclear and chemical data has been generated for the production of neutron deficient radionuclides which includes radioisotopes of terbium, gadolinium, astatine, technetium, ruthenium, zirconium, niobium, cadmium, thallium rhenium, etc. using our national accelerator facilities.Efficient chemical separation methods have been developed to separate the product from the corresponding bulk target. During my talk I shall discuss in detail our approach to address the subject.