Changes between Version 1 and Version 2 of ExampleZlineshape

Timestamp:

May 20, 2010, 10:00:29 AM (14 years ago)

Author:

Juergen Reuter

Comment:

--

ExampleZlineshape

@@ -12 +12 @@
 }}}
 
-The Born process and and additional bremsstrahlung photon, compilation:
+The Born process and additional bremsstrahlung photon, compilation:
 
 {{{
@@ -20 +20 @@
 }}}
 
+Avoiding soft and collinear singularities (very mildly):
+
+{{{
+cuts = all E >= 100 MeV [prt]
+   and all abs (cos(Theta)) <= 0.99 [prt]
+   and all M2 >= (1 GeV)^2 [prt, prt]
+}}}
+
+Define title etc. as global variables, that will be used by PLOT:
+
+{{{
+$description = "A WHIZARD 2.0 Example"
+$xlabel = "$\sqrt{s}$/GeV"
+$ylabel = "$\sigma(s)$/pb"
+}}}
+
+Allocate one plot
+
+{{{
+$title = "The Z Lineshape in $e^+e^-\to\mu^+\mu^-$"
+plot lineshape_born (88 GeV, 95 GeV)
+}}}
+
+Allocate another plot
+
+{{{
+$title = "The Z Lineshape in $e^+e^-\to\mu^+\mu^-\gamma$"
+plot lineshape_rc (88 GeV, 95 GeV)
+}}}
+
+Scanning in steps over the collider energy, integrating both Born and radiative corrections:
+
+{{{
+scan sqrts = (88.0 GeV => 90.0 GeV /+ 0.5 GeV,
+              90.1 GeV => 91.9 GeV /+ 0.1 GeV,
+              92.0 GeV => 95.0 GeV /+ 0.5 GeV) {
+  beams = e1, E1
+  integrate (born) { iterations = 1:2000 }
+  record lineshape_born (sqrts, integral (born) / 1000)
+  integrate (rc)   { iterations = 5:5000 }
+  record lineshape_rc (sqrts, integral (rc) / 1000)
+}
+}}}
+
+Write out the analysis:
+
+{{{
+$analysis_filename = "Z-lineshape"
+write_analysis
+}}}