RARE
KAON
DECAYS
by
JACK L. RITCHIE
Rare kaon decay
experiments are achieving
unprecedented sensitivity
to new physics.
T
HE PARTICLES CALLED KAONS, or K
mesons, were rst observed in the late 1940s in
cosmic-ray experiments. By todays standards they
are c

Chapter 1
Wave mechanics
c B. Zwiebach
In wave mechanics the wavefunction describes the physics of a particle moving in a
potential. The wavefuntion satises the Schrdinger equation, a linear partial dierential
o
equation that is rst order in time derivati

Chapter 2
States of spin one-half
c B. Zwiebach
The Stern-Gerlach experiment demonstrated that the magnetic moment of the electron takes
quantized values. By inference one is led to the concept of spin angular momentum and
the idea that the electron is a

Chapter 4
Linear algebra II
c B. Zwiebach
We introduce inner products as extra structure on real and complex vector spaces. With
this inner product the Schwarz inequality holds. We are also able to build orthonormal bases
following the Gram-Schmidt proced

Chapter 3
Linear algebra I: vector spaces and
operators
c B. Zwiebach
We dene real and complex vector spaces. Using subspaces we introduce the concept
of the direct sum representation of a vector space. We dene spanning sets, linearly independent sets, ba