B factories are specialized particle accelerators designed to study B mesons, which are particles containing a bottom quark. These facilities produce high-energy collisions that allow scientists to observe the behavior and properties of B mesons and their interactions. The primary goal of B factories is to explore CP violation, a phenomenon that helps explain the matter-antimatter imbalance in the universe. By analyzing the decay patterns of B mesons, researchers can gain insights into fundamental questions in particle physics and the early universe.