Electroweak Theory / E. A. Paschos.

Format:

Book

Author/Creator:

Paschos, E. A. (Emmanuel A.)

Series:

Cambridge books online.

Language:

English

Subjects (All):

Electroweak interactions.

Physical Description:

1 online resource (260 pages) : digital, PDF file(s)

Place of Publication:

Cambridge : Cambridge University Press, 2007.

System Details:

Mode of access: World Wide Web.

text file

PDF

Summary:

The electroweak theory unifies two basic forces of nature: the weak force and electromagnetism. This achievement is comparable to Maxwell's unification of electricity and magnetism. The theory made numerous predictions that have been confirmed by experiments. This book is a concise introduction to the structure of the electroweak theory and its applications. Electroweak Theory describes the structure and properties of field theories with global and local symmetries, leading to the construction of the standard model. The greater part of the book explains the basic predictions of the theory. It describes the new particles and processes predicted by the theory, and compares them with experimental results. Among the topics covered are neutral currents, the properties of W and Z bosons, the properties of quarks and mesons containing heavy quarks, neutrino oscillations, CP-asymmetries in K, D, and B meson decays, and the search for Higgs particles. The book contains sections guiding the reader through the complicated calculations of Feynman diagrams, such as box and penguin diagrams. There are discussions of the results and their relevance to physical phenomena. Each chapter contains selected problems, stemming from the long teaching experience of the author, to supplement the text. This will be of great interest to graduate students and researchers in elementary particle physics.

Contents:

Part I The road to unification 1

1 The electromagnetic current and its properties 3

1.2 The current for hadronic states 6

1.3 Parity-violating form factors 9

2 The weak currents 12

2.1 The weak currents and some of their properties 12

2.2 The partially conserved axial current 16

2.3 Regularities among the forces 18

3 The quark model 21

3.2 Current algebra 22

3.3 Quantum chromodynamics 26

Part II Field theories with global or local symmetries 31

4 Yang-Mills theories 33

4.1 The Yang-Mills field 33

4.2 Gauge invariance in scalar electrodynamics 36

5 Spontaneous breaking of symmetries 41

5.1 Spontaneous breaking of global symmetries: discrete symmetry 42

5.2 Continuous global symmetries 44

5.3 Spontaneous breaking of local symmetries 49

6 Construction of the model 53

7 The Higgs mechanism in the Glashow-Salam-Weinberg model 57

7.1 Masses for gauge bosons 57

7.2 Masses for leptons 61

8 The leptonic sector 64

8.1 Feynman rules 64

8.2 Predictions in the leptonic sector 68

8.3 Leptonic neutral currents 70

8.4 Weak effects in electron-positron annihilation 76

9 Incorporating hadrons 78

9.1 The mixing matrix 78

9.2 Flavor-changing neutral couplings (FCNCs) 82

9.3 The elements of the mixing matrix 84

Part III Experimental consequences and comparisons 93

10 Deep inelastic scattering 95

10.1 Kinematics for deep inelastic scattering 95

10.2 Hadronic structure functions 99

10.3 Scaling and the total cross section 101

10.4 The parton model 104

10.5 The Drell-Yan process 108

11 Charged-current reactions 112

11.1 Deep inelastic scattering 112

11.2 Evolution of distribution functions 117

11.3 Quasi-elastic scattering 120

12 Neutral currents in semileptonic reactions 124

12.1 Neutrino-hadron neutral-current interactions 124

12.2 Model-independent predictions 126

12.3 Neutral-current cross sections 128

12.4 Parity violation in electron scattering 130

13 Physics of neutrinos 136

13.1 Neutrino masses 136

13.2 Neutrino oscillations 139

13.3 Experimental results 145

13.4 Majorana neutrinos 148

13.5 Neutrinoless double beta decay 150

14 Heavy quarks 155

14.2 Semileptonic and inclusive B-meson decays 158

14.3 Exclusive semileptonic decays 163

14.4 Heavy-quark effective theory 164

14.5 The effective Lagrangian: 1/m[subscript Q] corrections 167

14.6 The top quark and its physical properties 171

14.7 Loop diagrams with heavy quarks 173

15 CP violation: K mesons 180

15.2 General properties 181

15.3 Time development of states 184

15.4 The K[superscript 0]-K[superscript 0] transition amplitude 189

15.5 CP violation in amplitudes 191

15.6 The effective Hamiltonian 194

15.7 Calculation of a penguin diagram 198

16 CP violation: D and B mesons 203

16.2 The D[superscript 0]-D[superscript 0] transition amplitude 203

16.3 Comparison of K[superscript 0] and B[superscript 0] mesons 206

16.4 Mixing in the B[subscript d] system 207

16.5 Decay rates and CP violation 210

16.6 Mass and lifetime differences for B[subscript s] mesons 215

17 Higgs particles 218

17.1 Higgs-boson couplings 218

17.2 Precision tests of the theory 220

17.3 Bounds on masses from general principles 224

17.4 Decays 225

17.5 Production in electron-positron colliders 227

17.6 Production in hadron colliders 229

17.7 Other symmetry-breaking schemes 231

Appendix A Conventions, spinors, and currents 236

Appendix B Cross sections and traces 239

Appendix C Identities for quark bilinears 242.

Notes:

Title from publishers bibliographic system (viewed on 02 Mar 2012).

Other Format:

Print version:

ISBN:

9780511611049

9780521860987

Access Restriction:

Restricted for use by site license.