## Introduction to High Energy PhysicsThis highly regarded textbook for advanced undergraduates provides a comprehensive introduction to modern particle physics. Coverage emphasizes the balance between experiment and theory. It places stress on the phenomenological approach and basic theoretical concepts rather than rigorous mathematical detail. Donald Perkins also details recent developments in elementary particle physics, as well as its connections with cosmology and astrophysics. A number of key experiments are also identified along with a description of how they have influenced the field. Perkins presents most of the material in the context of the Standard Model of quarks and leptons. He also fully explores the shortcomings of this model and new physics beyond its compass (such as supersymmetry, neutrino mass and oscillations, GUTs and superstrings). The text includes many problems and a detailed and annotated further reading list. The volume will also provide a solid foundation for graduate study. |

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### Contents

Interactions and fields | 35 |

Invariance principles and conservation laws | 63 |

Quarks in hadrons | 95 |

Lepton and quark scattering | 140 |

Quark interactions and QCD | 171 |

Weak interactions | 194 |

Electroweak interactions and the Standard Model | 242 |

Physics beyond the Standard Model | 276 |

Particle physics and cosmology | 303 |

Experimental methods | 338 |

Appendix A Table of elementary particles | 377 |

ClebschGordan coefficients and dfunctions | 386 |

Spherical harmonics dfunctions and ClebschGordan | 393 |

Answers to problems | 408 |

418 | |

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accelerators amplitude angle angular distribution angular momentum annihilation antineutrino antiparticle antiproton antiquark atomic baryon beam Big Bang boson branching ratio calculated Cerenkov CERN chamber Chapter cms energy collider colour conservation constant cosmic rays coupling CP violation cross-section decay modes density detector diagrams eigenstates electric charge electromagnetic interactions electron electroweak equation example exchange experimental experiments factor Fermi fermions field flavour fraction GeV2 gluon hadrons helicity Higgs high energy invariance involved ionisation isospin kaon lepton lifetime magnetic massless measured mediated mesons muon neutral neutral-current neutrino neutron nuclear nucleon nucleus observed oscillations pair parameter parity particle physics partons pion pointlike polarisation positron positronium potential predicted process e+e production proton quantum number quark-antiquark radiation reaction relativistic resonance scalar scattering Section shown in Figure shows sin2 spin Standard Model strong interactions symmetry target theory top quark traversing vector velocity wavefunction weak interactions width y-rays