Changes between Version 2 and Version 3 of ExampleZprime

Timestamp:

Apr 12, 2010, 9:28:04 AM (14 years ago)

Author:

ohl

Comment:

Pretty printing

ExampleZprime

@@ -1 @@
-Steered by this file
+Choose the model
 {{{
 model = Zprime
-
+}}}
+Setup aliases for partons (quarks and gluons) and leptons (electrons and positrons)
+{{{
 alias pr = u:d:s:c:gl:U:D:S:C
 alias lepton = e1:E1
+}}}
+Look at e+e--pairs created by colliding all possible parton pairs
+{{{ 
 process zp_drell_yan = pr, pr => e1, E1
-
-# Define model parameters
+}}}
+Set values for the model parameters (mass and width of the Z')
+{{{
 mZH = 1500 GeV
 wZH = 50 GeV
-
-# Define reasonable cuts and integrate the cross section(s)
-# in order to initialize the phase space grids for similation
+}}}
+Define reasonable cuts
+{{{
 cuts = all Pt >= 50 GeV [lepton]
        and all -2.5 <= Eta <= 2.5 [e1:E1]
        and all M >= 800 GeV [e1,E1]
-
-# Define the process scale 
+}}}
+Define the process scale 
+{{{
 scale = 1500 GeV
-
-# Beam specification and integration
+}}}
+Set up the beams (full energy LHC with default lhapdf structure functions
+{{{
 sqrts = 14 TeV
-beams = p,p => lhapdf 
+beams = p,p => lhapdf
+}}}
+integrate the cross sections in order to initialize the phase space grids for similation
+{{{
 integrate (zp_drell_yan) { iterations = 6:20000 }
-
+}}}
+choose weighted events for smoother histograms
+{{{
 ?unweighted = false
-
-# Define title etc. as global variables, that will be used by PLOT
+}}}
+define title etc. as global variables, that will be used by PLOT
+{{{
 $description =
   "A WHIZARD 2.0 Example.
@@ -35 +49 @@
    distributions."
 $ylabel = "$N_{\textrm{events}}$"
-
-# Allocate plots
+}}}
+allocate plots
+{{{
 $title = "$Z'$ Drell-Yan dilepton peak $pp\to \ell\ell$"
 $xlabel = "$\theta^{\ell}$/GeV"
@@ -44 +59 @@
 $xlabel = "$p_T^{\ell}$/GeV"
 histogram pt_lepton (100 GeV, 2000 GeV, 100 GeV)
- 
+
 $title = "$Z'$ Drell-Yan: Angular distribution of the $\ell$"
 $xlabel = "$\theta^{\ell}$/rad"
 histogram th_lepton (0, 3.1415, 0.157)
-
+}}}
+and tell WHIZARD what to store in them
+{{{
 analysis = record m_lepton (eval M [e1,E1]) and
            record pt_lepton (eval Pt [e1]) and
            record th_lepton (eval Theta [e1]) 
-
+}}}
+simulate 100000 events
+{{{
 n_events = 100000
-
 simulate (zp_drell_yan)
-
+}}}
+write results to file (and run LaTeX to produce plots etc.)
+{{{
 $analysis_filename = "Zprime"
 }}}
+
 WHIZARD will produce histograms in the
 [http://projects.hepforge.org/whizard/trac/attachment/wiki/ExampleZprime/Zprime.pdf PDF output] and as [http://projects.hepforge.org/whizard/trac/attachment/wiki/ExampleZprime/Zprime.dat data file].  The progress can be monitored on the terminal and in the