[Atlas-ww] validation samples

[Sarah Allwood]

Dear All, 

It looks as though we could submit a request for WW pairs in the pre-DC3 
samples. There may be a problem with insisting on high-pt since the 
samples should focus on the first few weeks of running, but maybe it's 
worth pursuing.

Is anyone willing to be reponsible for the validation? (I'm not)

Cheers
Sarah


---------- Forwarded message ----------
Date: Thu, 13 Oct 2005 10:07:03 -0400 (EDT)
From: Gustaaf Brooijmans <gusbroo at nevis.columbia.edu>
To: Sarah Allwood <S.E.Allwood at postgrad.manchester.ac.uk>
Cc: samir.ferrag at fys.uio.no, gusbroo at fnal.gov
Subject: Re: your mail


Dear Sarah,

It's not in the current list (see
https://uimon.cern.ch/twiki/bin/view/Atlas/PreDC3Sample), and there is an
immediate problem with your request in that hadronically decaying W's are
not observable over background (no matter their pT), unless there is
"something else" in the event.  So maybe the thing to look at is WW
production with one W decaying leptonically and the other hadronically
(also not trivial to observe over the W+jets), and inject some pT 
threshold on the W's.

That being said, you should be aware that DC3 will focus on simulating a
"100 pb-1" dataset (we learned this after the last exotics meeting), so 
high pT W pairs are unlikely to find a lot of support.  But I think a 
reasonable case can be made for W pairs at least, and then you'd at least 
have a substantial base sample to work with (and you could produce smaller 
samples with increasing pT thresholds "privately").  If one of you 
volunteers to be responsible for the validation, I will be happy to argue 
the case for W pairs with Ian and Giacomo.

Gustaaf


On Thu, 13 Oct 2005, Sarah Allwood wrote:

> Dear Samir and Gustaaf, 
> 
> We're (UCL and Manchester group) interested in looking at a sample of 
> high pT hadronically decaying W's. Is there any room in the validation 
> sample requests, or any central production, for such a sample? Or have 
> these already been defined?
> 
> Thanks
> Sarah
> 
> 

-- 
Gustaaf Brooijmans - Columbia University
@Columbia: (212) 854 4527, @Nevis: (914) 591 2804
@Fermilab: (630) 840 4269, emergency: (773) 517 1673