Hi Sergei, all
for these possible studies regarding ttbar xsec in extreme phase corners, i guess
it would be nice to have at least two different ttbar signal models. from what I
know it would be nice to have the possibility to look at MC@NLO and POWHEG
samples ?!
I'll check pythia8 and herwig++ as well if they are open for access, i.e. just
trees or special atlas/cms format ?
cheers & thanks
andy
---------------------------------------------------
Andreas Jung
Fermilab / D0 Experiment
DAB5 - MS 357
P.O. Box 500, Batavia, IL, 60510, USA
Office: +1630-840-5751
---------------------------------------------------
________________________________________
From: [log in to unmask] [[log in to unmask]] on behalf of Sergei Chekanov [[log in to unmask]]
Sent: Wednesday, January 30, 2013 3:39 PM
To: [log in to unmask]
Subject: [SNOWMASS-TOP] MC samples for high- pT top studies
Dear all,
I was asked to send a list of MCs after the fast detector simulation
(Delphes 2.0.3) for our high-pT top-quark studies. The events were
generated using the ATLAS geometry for pp collisions at sqrt(s)=14 TeV.
No pile-ups.
1) Fully inclusive QCD events (without top quarks) with at least one
antiKT6 jet above pT>650 GeV. The samples correspond to ~800k events
(roughly 9.6 fb-1)
a) PYTHIA8 (the default tuning)
Includes all major QCD processes (but top quarks):
HardQCD:all = on
WeakSingleBoson:all = on
WeakDoubleBoson:all = on
WeakBosonAndParton:all = on
PromptPhoton:all = on
b) HERWIG++ 2.6.1.
All QCD but tops, & similar statistics (~800k events).
The total size of the ROOT files are ~80GB per sample
2) ttbar production, all decay channels. 415k events for each MC:
a) PYTHIA8 with the processes:
Top:gg2ttbar = on
Top:qqbar2ttbar=on
b) HERWIG++ 2.6.1 (all SM ttbar processes).
As for the inclusive QCD sample, events were preselected with
pT(jet)>650 GeV.
I can post this info on the wiki. The samples have the truth
information & detector-level information. I know about one feature of
the samples - the b-tagging is not realistic, but the rest looked OK.
The b-tagging can be redone offline.
The samples were used for one of our papers
http://arxiv.org/abs/1301.5810
best, Sergei
Sergei Chekanov | https://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 01/29/2013 09:47 AM, Reinhard Schwienhorst wrote:
> Dear top quark friends,
> this is a reminder that the first Snowmass top quark meeting will take
> place tomorrow, Wednesday, January 30 at 9am Eastern time. The meeting
> agenda is at
> https://indico.cern.ch/conferenceDisplay.py?confId=231689
> and you can connect to the meeting by Vidyo or phone. For those at
> Fermilab, the Sunrise Room on the 11th Floor of Wilson Hall has been
> reserved for this meeting.
>
> The Snowmass Top Group Conveners,
> Cecilia Gerber, Kaustubh Agashe, Kirill Melnikov, Reinhard Schwienhorst,
> Robin Erbacher
>
>
> On Jan 23, 2013, at 3:07 PM, Reinhard Schwienhorst <[log in to unmask]
> <mailto:[log in to unmask]>> wrote:
>
>> Dear top quark friends,
>> as previously announced, we will have a top quark meeting in
>> preparation for Snowmass 2013 on Wednesday, January 30, starting at
>> 9am Eastern time and continuing for most of the day. This first
>> meeting will be dedicated to presentations of summaries of top quark
>> topics, intended to give the current state of the top quark field.
>> These summaries will be the basis of our studies toward snowmass, and
>> we will have time for discussion and to go over concrete projects that
>> people can start on. The summaries are linked from the top snowmass
>> twiki page at
>> http://www.snowmass2013.org/tiki-index.php?page=Fully+Understanding+the+Top+Quark
>> <http://www.snowmass2013.org/tiki-index.php?page=Fully+Understanding+the+Top+Quark>
>>
>> The January 30 meeting agenda can be found at
>> https://indico.cern.ch/conferenceDisplay.py?confId=231689
>> The meeting will be a video-conference only, using Vidyo. The link to
>> the Vidyo room is given on the agenda page. If you have not used Vidyo
>> before, instructions can be found at
>> http://information-technology.web.cern.ch/services/fe/vidyo
>> The phone number to access a vidyo meeting by phone from the US is
>> (tool free): +18665777460. The extension number for this meeting is
>> 9231689. Phone access numbers for other countries are given on the
>> Vidyo page and also on the agenda. If you have not used Vidyo before
>> and would like to test it before the meeting, the web page above has
>> some pointers. You are also able to join the room at any time to try it.
>>
>> Best regards,
>> the top group conveners,
>> Cecilia, Kaustubh, Kirill, Reinhard, Robin
>>
>>
>>
>
>
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