Semileptonic decays are a type of particle decay in which a particle decays into lighter particles while also emitting a neutrino or antineutrino. This process involves the weak force, one of the fundamental forces of nature, and is governed by the theory of the Standard Model of particle physics. Semileptonic decays are of particular interest to researchers because they can provide valuable information about the properties of particles and the underlying symmetries of the Standard Model. By studying the kinematics and decay products of semileptonic decays, researchers can extract information about the masses, lifetimes, and interactions of particles. In experimental particle physics, semileptonic decays are often studied using high-energy particle colliders such as the Large Hadron Collider (LHC) at CERN. By colliding particles at high energies, researchers can create a wide range of particles and study their decays to better understand the fundamental workings of the universe. Overall, research in semileptonic decays plays a crucial role in advancing our understanding of particle physics and the fundamental forces of nature.