Executive Summary : | Many well- motivated Beyond the Standard Model (BSM) scenarios predict the existence of particles that have large lifetimes (greater than a few 100 ps), and hence these are called long-lived particles (LLPs).The signature of LLP will be the “smoking-gun” of the new physics and its presence may drastically impact many areas of particle physics and cosmology. My work plan will be focused on a few interconnected key areas that are crucial for LLP searches. The presence of LLPs can give very unusual signatures at the LHC, and the identification of such signatures may pose challenges as the whole setup was made in order to identify the prompt particles. A series of exhaustive studies must be performed in this little-known direction. The results of this project can be used by the experimentalists working in LHC and other experiments. The physics goal of this project is highly ambitious as well as very challenging. Investigations of the capabilities of detectors of LHC apart from CMS and ATLAS and other independent experiments in the search for new particles. It will also be studied on how these experiments complement each other. This might bring the possibility to think about new detector requirements. The bounds, and future sensitivity estimated in this project will be have implications in various interconnected directions including dark matter and neutrino physics. In summary, I would like to write down the following key points which will be explored in detail: a). Development of novel identification techniques for LLPs b). Finding out new algorithms for realistic analyses for LLPs c). Studying how to use the new detector components of CMS and ATLAS of LHC experiments efficiently to search for LLPs. d). Statistical combinations of existing limits and future sensitivities calculated in our project. e). Investigating the complementarity between LHC and other small experiments and how such experiments can be used to improve the sensitivity of LLP searches. f). Connecting new physics models including various dark matter models with LLP. |