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%  PHY 352S Lecture 3
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\documentstyle[11pt]{article}
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\hoffset -0.75in
\voffset -0.25in
\textwidth=6.5in
\textheight=8.5in
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\input latex.macros
\input top.macros
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%  Arrows...
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\def \rightdownarrow
 {\kern.4em {\raise1.75ex\hbox{$\Bigl |$}$\kern-0.27em{\longrightarrow}$}}
\def \mrightdownarrow
 {\kern.4em {\raise1.25ex \hbox{$|$} \kern-0.27em{
                                                \longrightarrow}}}

\input PHY352S.macros
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\begin{document}
$$\eqalign{
t \rightarrow &W^+ b \cr
&\mrightdownarrow \cases{
						e^+ \nu_e & \cr
	     \mu^+ \nu_\mu& \cr 
      \tau^+ \nu_\tau& \cr}
}
$$ 

$$\eqalign{
t \rightarrow &W^+ b \cr
&\mrightdownarrow \cases{
						c\bar{s}& \cr
	     u\bar{d}& \cr }
}
$$ 

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\end{document}