An accessible and carefully structured introduction to Particle Physics, including important coverage of the Higgs Boson and recent progress in neutrino physics. Fourth edition of this successful title in the Manchester Physics series Includes information on recent key discoveries including: An account of the discovery of exotic hadrons, byond the simple quark model; Expanded treatments of neutrino physics and CP violation in B-decays; An updated account of 'physics beyond the standard model', including the interaction of particle physics with cosmology Additional problems in all chapters, with solutions to selected problems available on the book's website Advanced material appears in optional starred sections