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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