Flavour Physics and Effective Field Theory
16 Lectures Dr. A. Lenz
Flavour physics observables can provide crucial constraints on extensions
of the standard model (SM). Moreover the phenomenon of CP violation, which is
supposed to be the key for the understanding of the existence of matter in the
universe, was until now only observed in flavour transitions.
For any meaningful interpretation of flavour data an understanding of the
corresponding SM contribution is mandatory. The general concept of effective theories
is also the basis of the theoretical framework for describing hadron decays.
The essential premise of effective theories is that dynamics at low energies (or large distances) does not
depend on the details of the dynamics at high energies (or short distances). As a result,
low energy physics can be described using an effective Lagrangian that contains only a
few degrees of freedom, ignoring additional degrees of freedom present at
higher energies.
In this lecture course
several examples of effective theories relevant for flavour physics will be discussed in detail.
Outline of course
 Flavour phenomenology
 Fermi theory of weak interactions
 The effective Hamiltonian
 The heavy quark expansion (HQE)
 The heavy quark effective theory (HQET)
Books for the Course
 A. Manohar and M. Wise, Heavy Quark Physics (Cambridge, 2000)
 H. Georgi, Weak Interactions and Modern Particle Theory (Dover Pubn Inc, 2009)
 A. Buras, Weak Hamiltonian, CP violation and rare decays (arXiv: hepph/9806471)
 A. Pich, Effective field theory: Course (arXiv: hepph/9806303)
