ISBN: 3-540-66267-7
TITLE: Physics with Tau Leptons
AUTHOR: Stahl, Achim
TOC:

1. The tau Lepton and the Third Family 1
1.1 The Discovery of the tau 1
1.2 A Member of a New Family? 3
1.3 Direct Observation 8
2. Experimental Aspects 11
2.1 Overview of Experiments 11
2.2 Kinematics 12
2.3 Event Displays 20
2.4 Selection of tau Pairs 21
2.5 Identification of the Decays 28
2.6 Monte Carlo Simulation 38
3. The Static Properties of the tau 45
3.1 The Mass 45
3.2 The Lifetime 53
3.3 Form Factors of the Electromagnetic and Weak Currents 64
3.4 Branching Ratios 72
4. Electroweak Physics at the Z^0 Pole 95
4.1 Precision Tests of the Standard Model 95
4.2 tau Production at the Z^0 Pole 97
4.3 Cross Sections and Asymmetries 102
4.4 Electroweak Physics at the SLC 105
4.5 Analyzing the Spin of a tau Lepton 108
4.6 tau Polarization 120
4.7 Results 132
5. Strong Interactions in tau Decays 137
5.1 Selection Rules 137
5.2 Theoretical Description of Hadronic tau Decays 143
5.3 Experimental Studies 163
5.4 Inclusive Decays 173
6. tau Physics at Hadron Colliders 195
6.1 Identification of tau Leptons 195
6.2 The tau and the Top Quark 197
6.3 Searches 199
6.4 W Decays 201
7. The tau Neutrino 203
7.1 The Mass 203
7.2 The Helicity 212 
7.3 Electromagnetic Moments 217
8. The Lorentz Structure of the Charged Current 223
8.1 Generalization of the Weak Current 223
8.2 Hadronic Decays 235
8.3 Spin-Dependent Terms 237
8.4 The Current Experimental Situation 246
9. Searching for CP Violation 253
9.1 CP Violation in tau Production 253
9.2 CP Violation in tau Decays 264
10. Rare and Forbidden Decays 269
10.1 Second-Class Currents 269
10.2 Forbidden tau Decays 272
10.3 Flavor-Changing Neutral Currents 277
10.4 Excited Leptons 279
10.5 New Heavy Leptons 283
11. Summary and Outlook 285
References 287
Index 311
END
