Hi Sergei,

thanks, it's working now. I looked at available ttbar samples and made some plots:

http://hep0.okstate.edu/khanov/snowmass/ttbar/

Could you please take a look and see if they make sense to you? I'm particularly concered about the MET and HT distributions. MET (second column) changes a lot from 0 to 50 to 140 PU. HT (third column) is almost the same for 0 and 50 PU but changes dramatically from 50 to 140 PU. What particularly worries me is that if I just calculate the sum of selected leptons and jets' transverse momenta (columns 4,5) I don't see any big PU dependence. Is it expected?

-- Regards, Sasha


On Mon, 29 Apr 2013, Sergei Chekanov wrote:

Hi, Sasha

Today I was copying new Delphes files, this could case this glitch. It works now.

Here are recent updates for:


https://atlaswww.hep.anl.gov/asc/wikidoc/doku.php?id=snowmass2013:montecarlo

1) Corrected truth particles for all top samples (now we store all muons, electrons, taus, bosons and exotic particles, i.e. Z')

2) New Pythia8 sample for Higgs+ttbar

3) Explained how to read Delphes output without installing ROOT

best, Sergei

      Sergei Chekanov            | WWW  : www.hep.anl.gov/chakanau
      ===============            | Email: [log in to unmask]
     HEP Division, ANL           | Tel  : +01-630-252 6541
9700 S.Cass,Argonne,IL 60439,USA  | Fax  : +01-630-252-5782

On 04/28/2013 06:25 PM, Alexandre Khanov wrote:

Hi Sergei,
the samples were there this morning but now I'm not able to access them:
http://atlaswww1.hep.anl.gov/asc/snowmass2013/delphes36/ttbar/mu0/
Not Found
The requested URL /asc/snowmass2013/delphes36/ttbar/mu0/ was not found
on this server.
Are you moving the samples around or there is a problem with the server?
-- Regards, Sasha
Sergei Chekanov wrote:
Dear all,

  There are a few MC samples with ttbar available for testing:
https://atlaswww.hep.anl.gov/asc/wikidoc/doku.php?id=snowmass2013:montecarlo#monte_carlo_samples_using_the_snowmass_detector

  (low pT ttbar, high pT ttbar  and Zprime(3TeV)->ttbar  for mu=0,50,140).

  The samples were generated using the Snowmass Combined LHC detector:
http://www.snowmass2013.org/tiki-index.php?page=Energy_Frontier_FastSimulation#Fast_Simulation_and_Pileup_strategy_-_the_Snowmass_detector

  best, Sergei

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