                            DoubleSided ),
             Gaussian::sig_m( mes[5.20,5.30], mB0[5.20,5.30], sigmB0[0.01,0.05] )"
</pre>

<p>This create a double-sided Bmixing decay p.d.f. with observables <tt>dt</tt>,
per-event error <tt>dterr</tt> and all its parameters, convoluted with a triple
gaussian resolution model and multiplied with a Gaussian p.d.f. in the
energy substituted mass. (In plain RooFit this would have required at
least 23 lines of code).

<p>A series of three new tutorial macros has been 