Quarks And Leptons. An Introductory Course In Modern Particle Physics

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This self-contained text describes breakthroughs in our understanding of the structure and interactions of elementary particles. It provides students of theoretical or experimental physics with the background material to grasp the significance of these developments.

Author(s): Francis Halzen, Alan D. Martin
Publisher: John Wiley & Sons
Year: 1984

Language: English
Pages: 421
City: New York
Tags: Particle Physics

Quarks And Leptons: An Introductory Course In Modern Particle Physics Dust Jacket
Front Cover
Front Flap
Title-Page
Copyright
Dedication
Preface
Contents
1 A Preview Of Particle Physics
1.1 What Is The World Made Of ?
1.2 Quarks And Color
1.3 Color: The Charge Of Nuclear Interactions
1.4 Natural Units
1.5 Alpha Is Not The Only Charge Associated With Particle Interactions
1.6 There Are Weak Interactions, Too
1.7 Down Mendeleev's Path: More Quarks And Leptons
1.8 Gravity
1.9 Particles: The Experimentalist's Point Of View
1.10 Particle Detectors
2 Symmetries And Quarks
Symmetries And Groups
2.1 Symmetries In Physics: An Example
2.2 Symmetries And Groups: A Brief Introduction
2.3 The Group SU(2)
2.4 Combining Representations
2.5 Finite Symmetry Groups: P And C
2.6 SU(2) Of Isospin
2.7 Isospin For Antiparticles
2.8 The Group SU(3)
2.9 Another Example Of An SU(3) Group; Isospin And Strangeness
Quark "Atoms"
2.10 Quark-Antiquark States: Mesons
2.11 Three-Quark States: Baryons
2.12 Magnetic Moments
2.13 Heavy Quarks: Charm And Beyond
2.14 Hadron Masses
2.15 Color Factors
3 Antiparticles
3.1 Nonrelativistic Quantum Mechanics
3.2 Lorentz Covariance And Four-Vector Notation
3.3 The Klein-Gordon Equation
3.4 Historical Interlude
3.5 The Feynman-Stuckelberg Interpretation Of E< 0 Solutions
3.6 Nonrelativistic Perturbation Theory
3.7 Rules For Scattering Amplitudes In The Feynman-Stuckelberg Approach
4 Electrodynamics Of Spinless Particles
4.1 An "Electron" In An Electromagnetic Field A-mu
4.2 "Spinless" Electron-Muon Scattering
4.3 The Cross Section In Terms Of The Invariant Amplitude Curly-R
4.4 The Decay Rate In Terms Of Curly-R
4.5 "Spinless" Electron-Electron Scattering
4.6 Electron-Positron Scattering: An Application Of Crossing
4.7 Invariant Variables
4.8 The Origin Of The Propagator
4.9 Summary
5 The Dirac Equation
5.1 Covariant Form Of The Dirac Equation. Dirac Gamma-Matrices
5.2 Conserved Current And The Adjoint Equation
5.3 Free-Particle Spinors
5.4 Antiparticles
5.5 Normalization Of Spinors And Completeness Relations
5.6 Bilinear Covariants
5.7 Zero-Mass Fermions: The Two-Component Neutrino
6 Electrodynamics Of Spin- 1/2 Particles
6.1 An Electron Interacting With An Electromagnetic Field A-mu
6.2 Moller Scattering Electron-Electron To Electron-Electron
6.3 The Process Electron-Muon To Electron-Muon
6.4 Trace Theorems And Properties Of Gamma Matrices
6.5 Electron-Muon Scattering And The Process Positron-Electron To Antimuon-Muon
6.6 Helicity Conservation At High Energies
6.7 Survey Of Electron-Positron To Electron-Positron, Muon-Antimuon
6.8 Electron-Muon To Electron-Muon In The Laboratory Frame. Kinematics Relevant To The Parton Model
6.9 Photons. Polarization Vectors
6.10 More On Propagators. The Electron Propagator
The Propagator For A Spinless Particle
The Electron Propagator
6.11 The Photon Propagator
6.12 Massive Vector Particles
6.13 Real And Virtual Photons
6.14 Compton Scattering Photon-Electron To Photon-Electron
6.15 Pair Annihilation To Two Photons
6.16 The +i epsilon Prescription For Propagators
6.17 Summary Of The Feynman Rules For QED
7 Loops, Renormalization, Running Coupling Constants, And All That
7.1 Scattering Electrons Off A Static Charge
7.2 Higher-Order Corrections
7.3 The Lamb Shift
7.4 More Loops: The Anomalous Magnetic Moment
7.5 Putting The Loops Together: Ward Identities
7.6 Charge Screeing And Electron-Muon Scattering
7.7 Renormalization
7.8 Charge Screeing In QED: The Running Coupling Constant
7.9 Running Coupling Constant For QCD
7.10 Summary And Comments
8 The Structure Of Hadrons
8.1 Probing A Charge Distribution With Electrons: Form Factors
8.2 Electron-Proton Scattering. Proton Form Factors
8.3 Inelastic Electron-Proton Scattering ep To eX
8.4 Summary Of The Formalism For Analyzing ep Scattering
8.5 Inelastic Electron Scattering As A (Virtual) Photon-Proton Total Cross Section
9 Partons
9.1 Bjorken Scaling
9.2 Partons And Bjorken Scaling
9.3 The Quarks Within The Proton
9.4 Where Are The Gluons ?
10 Quantum Chromodynamics
10.1 The Dual Role Of Gluons
10.2 Embedding Gamma*-Parton Processes In Deep Inelastic Scattering
10.3 The Parton Model Revisited
10.4 The Gluon Emission Cross Section
10.5 Scaling Violations. The Altarelli-Parisi Equation
10.6 Including Gluon Pair Production
10.7 Complete Evolution Equations For The Parton Densities
10.8 Physical Interpretation Of The P Functions
10.9 The Altarelli-Parisi Techniques Also Apply To Leptons And Photons: The Weizsacker-Williams Formula
11 Positron-Electron Annihilation And QCD
11.1 Electron-Positron Annihilation Into Hadrons: Electron-Positron To Quark-Antiquark
11.2 Fragmentation Functions And Their Scaling Properties
11.3 A Comment On Heavy Quark Production
11.4 Three-Jet Events: Electron-Positron To Quark-Antiquark-Gluon
11.5 An Alternative Derivation Of The Electron-Positron To Quark-Antiquark-Gluon Cross Section
11.6 A Discussion Of Three-Jet Events
11.7 QCD Corrections To Electron-Positron To Hadrons
11.8 Perturbative QCD
11.9 A Final Example: The Drell-Yan Process
12 Weak Interactions
12.1 Parity Violation And The V-A Form Of The Weak Current
12.2 Interpretation Of The Coupling G
12.3 Nuclear Beta-Decay
12.4 Further Trace Theorems
12.5 Muon Decay
12.6 Pion Decay
12.7 Charged Current Neutrino-Electron Scattering
12.8 Neutrino-Quark Scattering
12.9 First Observation Of Weak Neutral Currents
12.10 Neutral Current Neutrino-Quark Scattering
12.11 The Cabibbo Angle
12.12 Weak Mixing Angles
12.13 CP Invariance?
12.14 CP Violation: The Neutral Kaon System
13 Electroweak Interactions
13.1 Weak Isospin And Hypercharge
13.2 The Basic Electroweak Interaction
13.3 The Effective Current-Current Interaction
13.4 Feynman Rules For Electroweak Interactions
13.5 Neutrino-Electron Scattering
13.6 Electroweak Interference In Electron-Positron Annihilation
13.7 Other Observable Electroweak Interference Effects
14 Gauge Symmetries
14.1 The Lagrangian And Single-Particle Wave Equations
14.2 Noether's Theorem: Symmetries And Conservation Laws
14.3 U(1) Local Gauge Invariance And QED
14.4 Non-Abelian Gauge Invariance And QCD
14.5 Massive Gauge Bosons ?
14.6 Spontaneous Symmetry Breaking. "Hidden" Symmetry
14.7 Spontaneous Breaking Of A Global Gauge Symmetry
14.8 The Higgs Mechanism
14.9 Spontaneous Breaking Of A Local SU(2) Gauge Symmetry
15 The Weinberg-Salam Model And Beyond
15.1 Electroweak Interactions Revisited
15.2 Choice Of The Higgs Field
15.3 Masses Of The Gauge Bosons
15.4 Masses Of The Fermions
15.5 The Standard Model: The Final Lagrangian
15.6 Electroweak Theory Is Renormalizable
15.7 Grand Unification
15.8 Can The Proton Decay ?
15.9 The Early Universe As A High-Energy Physics Experiment
15.10 "Grander" Unification
Answers And Comments On The Exercises
Supplementary Reading
References
Index
Useful Forrmulae
Back Flap
Back Cover