The W+ boson is a fundamental particle in the Standard Model of particle physics. It is one of the carriers of the weak nuclear force, which is responsible for processes like beta decay in atomic nuclei. The W+ boson is electrically charged and plays a crucial role in mediating interactions between particles, such as transforming a neutron into a proton. Discovered in the early 1980s at the CERN laboratory, the W+ boson is part of a pair of W bosons, including the W- boson. These particles are essential for understanding how particles interact at a subatomic level, contributing to the overall framework of modern physics.