Book contents
- Frontmatter
- Dedication
- Contents
- Preface
- Acknowledgements
- List of Abbreviations
- Introduction
- Part I Basics of Gauge Theories
- Part II The StandardModel
- Part III Weak Decays in the StandardModel
- Part IV Weak Decays beyond the StandardModel
- 13 First Steps beyond the Standard Model
- 14 Standard Model Effective Field Theory
- 15 Simplest Extensions of the SM
- 16 Specific Models
- 17 Beyond Quark Flavor Physics
- 18 Grand Summary of New Physics Models
- 19 Flavor Expedition to the Zeptouniverse
- 20 Summary and Shopping List
- Appendix A Dirac Algebra, Spinors, Pauli and Gell-Mann Matrices
- Appendix B Feynman Rules of the Standard Model
- Appendix C Massive Loop Integrals
- Appendix D Numerical Input
- Appendix E Analytic Solutions to SMEFT RG Equations
- References
- Index
14 - Standard Model Effective Field Theory
from Part IV - Weak Decays beyond the StandardModel
Published online by Cambridge University Press: 11 June 2020
- Frontmatter
- Dedication
- Contents
- Preface
- Acknowledgements
- List of Abbreviations
- Introduction
- Part I Basics of Gauge Theories
- Part II The StandardModel
- Part III Weak Decays in the StandardModel
- Part IV Weak Decays beyond the StandardModel
- 13 First Steps beyond the Standard Model
- 14 Standard Model Effective Field Theory
- 15 Simplest Extensions of the SM
- 16 Specific Models
- 17 Beyond Quark Flavor Physics
- 18 Grand Summary of New Physics Models
- 19 Flavor Expedition to the Zeptouniverse
- 20 Summary and Shopping List
- Appendix A Dirac Algebra, Spinors, Pauli and Gell-Mann Matrices
- Appendix B Feynman Rules of the Standard Model
- Appendix C Massive Loop Integrals
- Appendix D Numerical Input
- Appendix E Analytic Solutions to SMEFT RG Equations
- References
- Index
Summary
Chapter 14 will be rather general, and it will be strategically useful to look next at specific simple examples of NP. Having already all relevant SM formulas for flavor observables at hand, it will be of interest to see how they generalize beyond the SM. In this step we will first discuss the concept of minimal flavor violation (MFV), that is the most modest modification of the flavor-violating effects found in the SM. In these models a number of strict correlations between flavor observablesare found. Next we will go go beyond MFV models considering the so-called simplified models in which NP contributions to flavor-violating processes are dominated by tree-level exchanges of neutral bosons, in particular the SM Z-boson, a heavy neutral gauge boson Z', and a heavy scalaror pseudoscalar. In these models FCNC processes appear already at tree-level modifying in a striking manner the pattern of flavor violation found in the SM and in MFV models. Moreover, right-handed currents will enter the scene. We will see that some of thesesimplified models will give us some insight into the origin of anomalies found in previous chapters.
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- Gauge Theory of Weak Decays , pp. 433 - 465Publisher: Cambridge University PressPrint publication year: 2020