[Rivet] CMS ridge

[Janssen Xavier]

yes, this buffer approach works to qualitatively reproduce the shape also in data but I would probably not advocate it as precise results. X.


> On 05 Jun 2018, at 06:38, Holger Schulz <holger.schulz at durham.ac.uk> wrote:
> 
> Hi Xavier,
> 
> sounds interesting. Google tells me that some students used CMS open
> data to rediscover
> the ridge --- do you think it would be feasible to do the BG subtraction
> in that fashion, too?
> 
> Thanks,
> Holger
> 
> 
> On 04/06/18 16:33, Janssen Xavier wrote:
>> Hi Holger,
>> 
>> We never fully implemented that analysis at that time because this require event mixing to subtract the trivial background. I/We had a simplified version with mixing the 10 previous events for the first pp paper I think but no idea after all this time where I did put it.  What I did with was only MC and without fixing the normalisation, so without comparison to real data in fact. I am cc’ing some relevant people from our heavy ion group to see if they would have interest 
>> 
>> Cheers, Xavier.
>> 
>>> On 04 Jun 2018, at 19:42, Holger Schulz <holger.schulz at durham.ac.uk> wrote:
>>> 
>>> Hi all,
>>> 
>>> does anyone have an approximate implementation of the CMS ridge data
>>> analysis by any chance?
>>> 
>>> I was thinking about using this in connection with pythia's rope
>>> hadronisation as
>>> a problem for the upcoming CMS tuning workshop at CERN.
>>> 
>>> Thanks,
>>> Holger
>>> 
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