[[snowmass2013:montecarlo| <<back]]

==== A collections of ttbar samples ====


Here are samples of [[https://cp3.irmp.ucl.ac.be/projects/delphes | Delphes 3.08]] events generated for the **14 TeV** center-of-mass energy (pp collisions).  HEPMC files are generated by **Andrey Loginov (loginov@fnal.gov)**. The events are generated for **0, 50 and 140** pileup scenarios. Data  are stored in the  ROOT format  using the standard [[https://cp3.irmp.ucl.ac.be/projects/delphes | Delphes]] output.
The samples use the "Snowmass" detector geometry. Jets were corrected using jet area correction and fake jets are not stored.
See [[http://www.snowmass2013.org/tiki-index.php?page=Energy_Frontier_FastSimulation| this wiki]] for details. 

The MadGraph samples are located [[http://mc.hep.anl.gov/asc/snowmass2013/delphes36/?dir=loginov| here]]

Here is the info from Andrey:

<code>
Note that for all the samples photons we have a full ME photon radiation 
treatment. For instance, for tta (ljets) the generation was performed using:

generate    p p > t t~ > l+ vl  b    j j b~     a   @1
add process p p > t t~ > l- vl~ b~   j j b      a   @2


== ttaa (dilepton)
ttaa_tt_dilepton_run_07_unweighted_events.lhe (and the split .event and .tar.gz files)
nevents = 20000
xsec = 0.47187E-02 pb

== ttaa (ljets)
ttaa_tt_ljets_run_05_unweighted_events.lhe (and the split .event and .tar.gz files)
nevents = 20000
xsec = xsec = 0.11894E-01 pb

== tta (dilepton)
tta_tt_dilepton_run_03_unweighted_events.lhe (and the split .event and .tar.gz files)
nevents = 50000
xsec = 0.67816E+00 pb

== tta (ljets)
tta_tt_ljets_run_07_unweighted_events.lhe (and the split .event and .tar.gz files)
nevents = 100000
xsec = 0.15678E+01 pb

== waa+0/1/2 jets (incl HF)
waa0jj_hf_run_01_unweighted_events.lhe (and the split .event and .tar.gz files)
nevents = 100000
xsec = 0.51095E+00 pb

== zaa+0/1/2 jets (incl HF)
zaa0jj_hf_run_01_unweighted_events.lhe (and the split .event and .tar.gz files)
nevents = 100000
xsec = 0.25014E+00 pb

</code>