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+\chapter{\CP violation in the \Bmeson system}
+\label{chap:SomeStuff}
+
+%% Restart the numbering to make sure that this is definitely page #1!
+\pagenumbering{arabic}
+
+%% Note that the citations in this chapter use the journal and
+%% arXiv keys: I used the SLAC-SPIRES online BibTeX retriever
+%% to build my bibliography. There are also quite a few non-standard
+%% macros, which come from my personal collection. You can have them
+%% if you want, or I might get round to properly releasing them at
+%% some point myself.
+
+\chapterquote{Laws were made to be broken.}%
+{Christopher North, 1785--1854}%: Blackwood's Magazine May 1830
+
+Symmetries, either intact or broken, have proved to be at the heart
+of how matter interacts. The Standard Model of fundamental interactions
+(SM) is composed of three independent continuous symmetry groups denoted
+$\SUgroup{3} \times \SUgroup{2} \times \Ugroup{1}$, representing the
+strong force, weak isospin and hypercharge
+respectively~\cite{Phys.Rev.Lett.19.1264, Phys.Rev.D2.1285,hep-ph/0410370}.
+
+\section{Neutral meson mixing}
+\label{sec:neutralmixing}
+We can go a long way with an effective Hamiltonian approach in
+canonical single-particle quantum mechanics. To do this we construct
+a wavefunction from a combination of a generic neutral meson state
+$\ket{\Xzero}$ and its anti-state $\ket{\Xzerobar}$:
+%
+\begin{equation}
+ \ket{\psi(t)} = a(t)\ket{\Xzero} + b(t)\ket{\Xzerobar}
+\end{equation}
+%
+which is governed by a time-dependent matrix differential equation,
+%
+\begin{equation}
+ \I \pdByd{}{t} \colvector{a \\ b}
+ =
+ \underbrace{%
+ \twomatrix{ M_{11}-\frac{\I}{2}\Gamma_{11}
+ & M_{12}-\frac{\I}{2}\Gamma_{12} }
+ { M_{12}^\ast-\frac{\I}{2}\Gamma_{12}^\ast
+ & M_{22}-\frac{\I}{2}\Gamma_{22} }
+ }_{\boldmatrix{H}}
+ \colvector{a \\ b}
+ .
+\end{equation}