Gauge Theories in Particle Physics 40th Anniversary Edition

The fifth edition of this well-established, highly regarded two-volume set continues to provide a fundamental introduction to advanced particle physics while incorporating substantial new experimental results, especially in the areas of the Higgs and top quark sectors, as well as CP violation and neutrino oscillations. It offers an accessible and practical introduction to the three gauge theories comprising the Standard Model of particle physics: quantum electrodynamics (QED), quantum chromodynamics (QCD), and the Glashow-Salam-Weinberg (GSW) electroweak theory.

The first volume provides a broad and self-contained introduction to the first of these theories, QED. A unique feature is the elementary introduction to quantum field theory, leading in easy stages to covariant perturbation theory and Feynman graphs, thereby establishing a firm foundation for the formal and conceptual framework upon which the subsequent development of the three quantum gauge field theories of the Standard Model is based.

The second volume covers the two non-Abelian gauge theories of QCD and the GSW theory. A distinctive feature is the extended treatment of two crucial theoretical tools: spontaneous symmetry breaking and the renormalization group. The underlying physics of these is elucidated by parallel discussions of examples from condensed matter systems: superfluidity and superconductivity, and critical phenomena. This new edition includes updates to jet algorithms, lattice field theory, CP violation and the CKM matrix, and neutrino physics.

New to the fifth edition:

• Tests of the Standard Model in the Higgs and top quark sectors
• The naturalness problem and responses to it going beyond the Standard Model
• The Standard Model as an effective field theory

This revised and updated anniversary edition provides a self-contained pedagogical treatment of the subject, from relativistic quantum mechanics to the frontiers of the Standard Model. For each theory, the authors discuss the main conceptual points in both mathematical and physical aspects, detail many practical calculations of physical quantities from first principles, and compare these quantitative predictions with experimental results, helping readers improve both their calculation skills and physical insight.

This set should serve as a valuable handbook for students and researchers in advanced particle physics looking for an introduction to the Standard Model of particle physics.

Praise for the 5th edition

"Aitchison and Hey was the ‘bible’ for me as a young post-doc in the 1980s … The book has been revised regularly as the field progressed and I am delighted to see a new edition which brings it up to date to the discovery of a Higgs-like boson at the LHC in July 2012. … Its strength has always been the combination of the theory with discussion of experimental results. The new edition continues this tradition by including … discussion of the related important observations of the last ten years—CP violation and oscillations in the B sector and the now rich phenomenology of neutrino oscillations. This will become a new classic."
—Amanda Cooper-Sarkar, Oxford University, UK

"This is an indispensable textbook for all particle physicists, experimentalists and theorists alike, providing an accessible exposé of the Standard Model, covering the mathematics used to describe it and some of the most important experimental results which vindicate it. … Volume 2 has been updated with extended discussions on quark and neutrino mixing and inclusion of results on CP violation and neutrino oscillations … these textbooks will remain on the top of a high energy physicist’s reading list for years to come."
—Matthew Wing, University College London, UK

"The editions of the book have developed as the experimental evidence has developed. The 5th edition adds 10 years of progress to the 4th edition.
This means that, as well as some updates on neutrino oscillation results and CP violation an extra chapter has been added on Further Developments. This means the progress at the LHC, because in 10 years we have not just seen a Higgs boson we have checked out the relative rates of its production modes and decay channels to an accuracy which establishes the Standard Model Higgs very securely. The book covers the Higgs to third generation quark and lepton couplings and the Higgs to muon coupling limit and explains why the Higgs triple coupling should be measured in the high luminosity phase of the LHC. Evidence for physics beyond the Standard Model is most obviously sought in the Higgs and top sectors and the section on the top is expanded to cover this. The recent expansion of theoretical calculations to NNLO in QCD is covered, such that one can begin to see convergence of the theory in most processes.

Most valuably it is explained why the non-observation of beyond Standard Model (BSM) physics at the few TeV scale presents us with a problem of naturalness, or fine-tuning of parameters. Two of the most promising avenues for exploration of BSM physics, supersymmetry and technicolour are explained and because of the multiplicity of choices within these theories the more general framework of Standard Model Effective Theory (SMEFT) is presented. Just as Fermi theory of the weak interaction was a low energy approximation to the full electroweak theory, so the Standard Model can be a low energy approximation to the full theory and thus we can add suitable operators to our Lagrangian to describe this. The net effect would be to modify couplings and to introduce new vertices. Even here there is much choice, but the advantage is that it provides a common picture for understanding many different phenomena. This is an area where much progress is being made at the moment. In current data there is no evidence for non-zero additional operators, but useful limits are being set and we can gauge the significance of anomalous results. This chapter thus brings the book up to date which the current state of the art."

- Amanda Cooper-Sarkar, Emeritus Professor of Particle Physics, University of Oxford, November 2024

"This has long been known as the best book for students, be they experimentalists or budding theorists, to get to grips as fast as possible with the gauge theories that describe our world. Now, with the final piece in the Standard Model jigsaw - the Higgs boson - in place, this new updated fifth edition is a timely one, with a detailed discussion of what we have learnt about the physics of both the Higgs boson and the top quark, as well as a view as to what might lie beyond. The book is rounded off with a welcome introduction to the modern view of gauge field theories as effective field theories, which will leave readers well set for the future of particle physics, whatever it may hold."

- Ben Gripaios, Professor of Theoretical Physics, University of Cambridge, November 2024

Ian J.R. Aitchison is Emeritus Professor of Physics at the University of Oxford. He has previously held research positions at Brookhaven National Laboratory, Saclay, and the University of Cambridge. He was a visiting professor at the University of Rochester and the University of Washington, and a scientific associate at CERN and SLAC. Dr. Aitchison has published over 90 scientific papers mainly on hadronic physics and quantum field theory. He is the author of two books and joint editor of further two.

Anthony J.G. Hey is now Honorary Senior Data Scientist at the UK’s National Laboratory at Harwell. He began his career with a doctorate in particle physics from the University of Oxford. After a career in particle physics that included a professorship at the University of Southampton and research positions at Caltech, MIT and CERN, he moved to Computer Science and founded a parallel computing research group. The group were one of the pioneers of distributed memory message-passing computers and helped establish the ‘MPI’ message passing standard. After leaving Southampton in 2001 he was director of the UK’s ‘eScience’ initiative before becoming a Vice-President in Microsoft Research. He returned to the UK in 2015 as Chief Data Scientist at the U.K.’s Rutherford Appleton Laboratory. He then founded a new ‘Scientific Machine Learning’ group to apply AI technologies to the ‘Big Scientific Data’ generated by the Diamond Synchrotron, the ISIS neutron source, and the Central Laser Facility that are located on the Harwell campus. He is the author of over 100 scientific papers on physics and computing and editor of ‘The Feynman Lectures on Computation’.

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