[Rivet] ChargedLeptons including neutrinos?

Markus Seidel markus.seidel at cern.ch
Tue Sep 20 13:22:09 BST 2016


Hi Andy,

thanks for fixing ChargedLeptons :)

I think the problem with PromptFinalState was my mistake. I intended to 
select events with exactly one lepton (not from tau). By just using 
accepttaudecays=false I ended up with still having dilepton e/mu+tau 
events in the selection.
So in the end I implemented a veto on W>tau+nu_tau as a workaround for 
the partonic decay selection. Afaik Holger is looking at 
CMS_2016_I1473674 and may come up with a better solution.

Cheers,
Markus

Am 20.09.2016 um 12:01 schrieb Andy Buckley:
> The ChargedLeptons fix is done -- thanks.
>
> I couldn't find a problem with the PromptFinalState prompt-tau option,
> though. It just defers to the Particle::isPrompt(from_prompt_tau, ...)
> method and the source of that looks ok to me.
>
> Maybe the problem was the documentation and arg names: that option does
> not *insist* on prompt taus (which would be a job e.g. for TauFinder and
> Particle::isPrompt()) but rather decides whether leptons from the decay
> of prompt taus are themselves to be considered prompt. I've tried to
> improve the docs a bit... but would that explain the behaviour you saw?
>
> Andy
>
>
> On 20/09/16 10:40, Andy Buckley wrote:
>> Hi Markus -- argh! I'll fix that right away. I'll also take a look at
>> PromptFinalState, since I think you reported that the from_prompt_tau
>> bool option was not working. These should appear in a new release very
>> soon: we're just putting the last touches on it.
>>
>> Andy
>>
>>
>> On 20/09/16 10:22, Markus Seidel wrote:
>>> Hi all,
>>>
>>> it seems the ChargedLeptons projection asks for Rivet::PID::isLepton but
>>> does not check if the lepton is actually charged...
>>>
>>> Expected behaviour would be that one can feed in a generic FinalState
>>> and gets out only charged leptons.
>>>
>>> Cheers,
>>> Markus
>>> _______________________________________________
>>> Rivet mailing list
>>> Rivet at projects.hepforge.org
>>> https://www.hepforge.org/lists/listinfo/rivet
>>
>>
>
>


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