[Rivet] missingEt variable in WFinder constructor

[Andy Buckley]

Hi again Ines,

Can you send your example analysis code so we can easily re-run & check?
Which version of Rivet are you using? I should check that some of the
recent interface changes did not accidentally break a MET cut, but this
will be far easier with an example code that I can just run out of the
box in the latest Rivet.

Cheers,
Andy


On 27/01/15 11:06, Inês Ochoa wrote:
> Hi Frank,
> 
> The WFinder is defined as:
> 
> WFinder wfinder(-6.0, 6.0, 20.0*GeV, PID::MUON, 0.0*GeV, 1000.0*GeV,
> 20.0*GeV, 0.1);
> 
> I can see that the documentation on WFinder now has some modifications
> on the list of arguments, but this is consistent with previous
> versions... I've also checked that the constituentLeptons()[0] pT does
> have a cut at 20 GeV.
> 
> Cheers,
> Inês
> 
> On 27/01/15 10:56, Frank Siegert wrote:
>> Hi Inês,
>>
>> The missingET argument should apply a pT cut to the (in)visible
>> momentum in your inputfs (which should include the neutrino). So your
>> observation would definitely not be expected, and I don't currently
>> see a reason why this would go wrong. Could you post a code snippet of
>> how your WFinder is defined in your analysis, or attach the full
>> analysis code?
>>
>> Cheers,
>> Frank
>>
>>
>>
>>
>> On 27 January 2015 at 11:44, Inês Ochoa <Ines.Ochoa at cern.ch> wrote:
>>> Dear Rivet developers,
>>>
>>> I am using Rivet 2.1.1 and selecting a W candidate with WFinder. I am
>>> applying a cut on the missing Et (as one of the arguments of
>>> WFinder()) but
>>> when accessing the neutrino with constituentNeutrinos()[0] I see that
>>> there
>>> is no cut on its Pt. In fact, changing the MET cut on the WFinder
>>> constructor seems to have no impact on the resulting number of events.
>>>
>>> Is this a known problem? Should that argument be ignored and the cut
>>> applied
>>> on the constituentNeutrino object instead?
>>>
>>> Thanks!
>>> Inês
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-- 
Dr Andy Buckley, Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow / PH Dept, CERN