Proton-proton (pp) collisions refer to high-energy collisions between protons in particle accelerators such as the Large Hadron Collider (LHC) at CERN. These collisions are used to study fundamental particles and their interactions, as well as to probe the properties of matter at very small scales. The collisions result in the production of a wide variety of particles, which are detected and studied by experimental physicists. By analyzing the products of these collisions, researchers can gain insights into the underlying physics of the particles and forces that govern the universe. One of the main goals of studying pp collisions is to search for new particles or phenomena that could provide a deeper understanding of the fundamental forces and particles in the universe. This research area plays a crucial role in advancing our understanding of the building blocks of matter and the nature of the universe.