[Rivet] ATLAS prompt photon analysis

[Mike Hance]

Hi Frank,

You're right, we should just put everything in pb.  I took the numbers from the tables in the appendix of the paper, 
which were in nb, and mentally normalized away the extra 10^3 terms I saw in the rivet output.  Thanks for spotting that!

I've attached a new tarball with that fixed, and with the files/functions/plots/etc renamed to have the proper SPIRES ID 
(thanks Jon!).  I'm sure there are other mistakes though, so feel free to point them out.  In the mean time, I hope 
Giovanni (and others) will be able to quickly spot-check the numbers in these files to make sure we've given you the 
right numbers.

Cheers,

-Mike



Frank Siegert wrote:
> Hi Mike,
> 
> Thanks a lot and don't worry about it taking longer, it's a complicated 
> analysis after all!
> 
> One issue that I noticed without having done detailed testing yet: The 
> .aida reference data seems to be in nb while Rivet's crossSection() is 
> by default in pb and thus that's what the MC histos are being filled the 
> way the code is now. Since the plot in the paper is also in pb I would 
> suggest adapting the reference .aida file, or what do you think?
> 
> Cheers,
> Frank
> 
> On 17/02/11 17:05, Mike Hance wrote:
>> Hi All,
>>
>> I've attached a tarball that (I think) contains everything needed to put
>> the ATLAS prompt photon results into HEPDATA, as well as a corresponding
>> RIVET routine that seems like it might be doing the right thing.
>>
>> One thing I should note up front is that, as far as I can tell, the
>> paper doesn't have a proper SPIRES ID. I suspect this will change when
>> PRD finally publishes the paper (it's been accepted for publication, but
>> I don't think it's actually made it into an issue of the journal yet),
>> so in the mean time, I've called the analysis "ATLAS_2010_S1234567". My
>> attempts at calling the analysis something like
>> "ATLAS_2010_PROMPTPHOTONS" were rebuffed by RIVET, so I'm not sure of
>> the right thing to do in this case. If you want me to relabel it as
>> something else, just let me know; otherwise, feel free to call it
>> whatever you like.
>>
>> The contents of the tarball are:
>>
>> ATLAS_2010_S1234567.info - The .info file that describes the analysis.
>>
>> ATLAS_2010_S1234567.raw - A flat file that breaks down the different
>> (E_T, eta) bins and the corresponding measurements, uncertainties, and
>> so forth.
>>
>> ATLAS_2010_S1234567.dat - This is the 'final' flat .dat file
>> corresponding to the ATLAS measurements, for comparison with the RIVET
>> output.
>>
>> ATLAS_2010_S1234567.aida - The .aida file produced from the .dat file
>> above.
>>
>> ATLAS_2010_S1234567.plot - The .plot file for the three histograms
>> associated with this analysis.
>>
>> ATLAS_2010_S1234567.cc - The RIVET routine.
>>
>>
>> I've tested this running PYTHIA standalone, but the cross sections for
>> prompt photon production are low enough that the histogram never really
>> gets populated. I also ran the routine using the ATHENA RIVET interface
>> against some ATLAS photon+jet (EVGEN) samples, and the results seemed
>> reasonable, but I wouldn't be surprised if there are still some bugs
>> lurking in there. I'll try to test this stuff against some filtered
>> dijet samples next week.
>>
>> In any event, please feel free to let me know if there's anything
>> unclear/wrong with what I've done, and I'll try to fix it ASAP.
>>
>> Finally, thanks to everyone who helped (and bugged) us to get this done
>> - I apologize it took us so long. Next time should be much faster, now
>> that we know what we're doing.
>>
>> Thanks!
>>
>> -Mike
>>
>>
>>
>> _______________________________________________
>> Rivet mailing list
>> Rivet at projects.hepforge.org
>> http://www.hepforge.org/lists/listinfo/rivet
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ATLAS_prompt_photon_analysis.tar
Type: application/x-tar
Size: 30720 bytes
Desc: not available
URL: <http://www.hepforge.org/lists-archive/rivet/attachments/20110217/11d7b1ad/attachment.tar>