[Rivet] ChargedLeptons including neutrinos?

[Andy Buckley]

That seems like a reasonable thing to also change to require charged 
leptons -- the name is clear that leptons are involved and there's no 
point in dressing neutrinos. Any objections?

Thanks again Markus.

Andy


On 20/09/16 13:55, Markus Seidel wrote:
> Addendum: The DressedLeptons projection currently prevents neutral
> particles (like neutrinos) from being dressed with photons but still
> returns the bare neutrals.
> (Might be intended for flexibility?)
>
> Cheers,
> Markus
>
> Am 20.09.2016 um 14:22 schrieb Markus Seidel:
>> 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
>>>>
>>>>
>>>
>>>


-- 
Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow