198 pages | 34 B/W Illus.
Get First-Hand Insight from a Contributor to the Standard Model of Particle Physics
Written by an award-winning former director-general of CERN and one of the world’s leading experts on particle physics, Electroweak Interactions explores the concepts that led to unification of the weak and electromagnetic interactions. It provides the fundamental elements of the theory of compact Lie groups and their representations, enabling a basic understanding of the role of flavor symmetry in particle physics.
Understand Conceptual Elements of the Theory of Elementary Particles
The book begins with the identification of the weak hadronic current with the isotopic spin current, Yang–Mills theory, and the first electroweak theory of Glashow. It discusses spontaneous breaking of a global symmetry and a local symmetry, covering the Goldstone theorem, Brout–Englert–Higgs mechanism, and the theory of Weinberg and Salam. The author then describes the theory of quarks, quark mixing, the Cabibbo angle, the Glashow–Iliopoulos–Maiani (GIM) mechanism, the theory of Kobayashi and Maskawa, six quark flavors, and CP violation.
Delve into Experimental Tests and Unresolved Problems
The author goes on to explore some phenomenological topics, such as neutral current interactions of neutrinos and CP violation in the neutral K-meson system. He also highlights how flavor-changing neutral current processes have emerged as probes to reveal the presence of new phenomena at energies not yet accessible with particle accelerators. The book concludes with an explanation of the expected properties of the Higgs boson and the methods adopted for its search. The predictions are also compared with relevant experimental results.
View the author’s first book in this collection: Relativistic Quantum Mechanics: An Introduction to Relativistic Quantum Fields.
"Maiani’s book Electroweak Interactions provides the essential information for a graduate student who wishes to learn about the electroweak sector of the standard model. The treatment, by one the key contributors to the field, is focused, physical, and authoritative."
—R. Keith Ellis, Director, Institute for Particle Physics Phenomenology, Durham University
"This book offers an excellent introduction to the theory of elementary particles with particular emphasis on the electroweak sector. It will be immensely useful to students, both experimentalists and theorists. It is also a book that every teacher of particle physics will absolutely need.
When we teach the subject, we often make the mistake to start from the formal aspects of gauge theories, Lie algebras, or differential geometry. They are important and necessary, but we forget that the student does not always understand why we need all this heavy artillery. This book, in fact this series because the present volume is part of a trilogy, starts the other way around: it introduces the physical principles and the phenomenological facts that point unambiguously to the introduction of the formal aspects of field theory. They will be the subject of the following volume. In the present book, experimentalists will find everything they need to know and theorists will understand why they also need to read the following volume.
A book for every particle physicist."
—John Iliopoulos, Ecole Normale Supérieure, Paris
"Electroweak Interactions by Luciano Maiani is an elegantly written graduate-level textbook, reviewing the unification of the weak and electromagnetic interactions that constitute the Standard Model of particle physics. Addressed to students familiar with relativistic quantum mechanics, it is also an excellent reference for active high energy physics (HEP) theorists and experimentalists, as well as teachers. It reconstructs a path that began with the connection between nuclear isospin and weak currents and ends with predictions for the properties of the Higgs boson, including comparisons with the most recent measurements being carried out in LHC experiments. Written by a major player in the field, this book is a must in a HEP library, both private and public."
—Arturo Menchaca-Rocha, FinstP, Professor of Physics, Mexico’s National Autonomous University, ALICE-CERN and AMS Collaborations Member, Former President of the Mexican Academy of Sciences, Presidential Advisor
THE GENERAL PICTURE
THE FORCES OF NATURE
ISOTOPIC SPIN AND STRANGENESS
THE PION NUCLEON AMPLITUDE
ISOSPIN AND WEAK CURRENTS
NONCOMMUTATIVE LOCAL SYMMETRIES
THE MINIMAL LAGRANGIAN
ELECTROWEAK UNIFICATION I
SYMMETRIES OF THE ELECTRON DOUBLET
THE MINIMAL GAUGE GROUP
THE GLASHOW THEORY
SPONTANEOUS SYMMETRY BREAKING
THE GOLDSTONE MODEL
SPECTRUM OF FLUCTUATIONS FOR μ2 < 0
THE BROUT–ENGLERT–HIGGS MECHANISM
MASSES OF VECTOR PARTICLES IN THE UNITARY GAUGE
THE MASSIVE VECTOR FIELD
ELECTROWEAK UNIFICATION II
THE THEORY OF WEINBERG AND SALAM
THE SCALAR DOUBLET
THE MASSES OF THE VECTOR FIELDS
THE MASS OF THE ELECTRON
THE MASS OF THE NEUTRINO
DETERMINATION OF THE NEUTRAL LEPTON CURRENT
CROSS SECTIONS OF THE PROCESSES νμ − e, ¯νμ − e
THE FUNDAMENTAL CONSTANTS
LEPTONIC WIDTH OF THE Z
RELATIVISTIC BREIT WIGNER FORMULA
THE PHYSICS OF THE Z IN THE REACTION e+ e−
QUARKS IN THREE COLORS
THE SAKATA MODEL
THE EIGHTFOLD WAY AND QUARKS
QUANTUM CHROMODYNAMICS (QCD)
THEORY OF QUARK MIXING
THE CABIBBO THEORY
THE GLASHOW, ILIOPOULOS, AND MAIANI MECHANISM
CP VIOLATION AND THE KOBAYASHI MASKAWA THEORY
ELECTROWEAK INTERACTIONS OF QUARKS
ORIGIN OF THE MASSES AND MIXING BETWEEN QUARKS
THE CABIBBO KOBAYASHI MASKAWA MATRIX
THE Z AND W DECAY WIDTHS
THE STANDARD MODEL LAGRANGIAN
DIGRESSION: VIOLATION OF ISOTOPIC SPIN
GOLDSTONE BOSONS IN SU(3)L ⊗ SU(3)R
PIONS AND KAONS AS "QUASI" GOLDSTONE BOSONS
THE VIOLATION OF ISOTOPIC SPIN
MIXING and CP VIOLATION IN THE NEUTRAL K, B, and D MESONS
MIXING AND CP VIOLATION IN THE K0 − ¯K 0 SYSTEM
MIXING OF THE NEUTRAL B AND D MESONS
FLAVOR-CHANGING NEUTRAL CURRENTS
THE ¯K 0 → K0 AMPLITUDE
EFFECTIVE LAGRANGIAN, COLOR FACTOR, VACUUM SATURATION
THE AMPLITUDES ¯B0D→ B0D , ¯B0S− B0S, and ¯D0 → D0
NUMERICAL ANALYSIS AND COMPARISON WITH DATA
THE SEARCH FOR THE HIGGS BOSON
INTERACTIONS OF THE HIGGS BOSON
SEARCHES AT e+e− and PROTON COLLIDERS
THE 125 GEV PARTICLE
Appendix A: Kallen Lehman representation of the two Point function
Appendix B: A useful decomposition for finite dimensional matrices
Appendix C: Continuous groups and their representations