[Rivet] Neutralinos in Rivet?

[David Grellscheid]

Hi Andy,

I'm not sure I need neutralinos specifically included. What I _do_ need, 
though, is a way of classifying stable BSM particles according to the SM 
effect they would have. VisibleFS, ChargedFS, etc all need to give 
sensible answers when they encounter such a particle. With such a 
classification it would become possible to write BSM-model-agnostic 
Rivet analyses, that one could use for background and different model 
signals interchangeably. I'd be happy to code that once we agree on a 
design. Maybe it's enough to extract the QCD and QED charge of the 
particle (and of its constituents) from the PDG code?

We've got a bunch of people here who can't wait to use Rivet to scan 
their favourite model's parameter space, using ATLAS's squark/gluino 
counts (S8983313).

   David



Andy Buckley wrote:
> On 28/02/11 16:40, David Grellscheid wrote:
>> Hi again,
>>
>> I'm trying to write a version of ATLAS_2011_S8983313. How do I add the
>> neutralinos to the pTmiss?
>>
>> Is there an equivalent of NU_E and NU_MU?
> 
> No enum, no... but the raw PDG ID should work. Is that enough? Maybe it
> should be enum'd, especially since we exclude them from jets by default
> via VisibleFinalState... but then I'm not sure I want to give them that
> sort of status until they actually exist ;)
> 
> Andy
> 
> PS. So the JetAlg.useInvisibles() method isn't *just* including
> neutrinos... quick, we need to correct the ATLAS jet data for LSP removal!
>