[Rivet] Reading LHE v3 weights into RIVET

[Spyridon Argyropoulos]

Hi Andy,

thanks for the reply. Then I guess a hack in the Pythia8 to HepMC interface should probably do the job.

I didn't have any particular form in mind on how to have the weights in the output. 
A vector of doubles? 

Regards,
Spyros

On Feb 19, 2015, at 1:58 AM, Andy Buckley wrote:

> On 19/02/15 00:35, Spyridon Argyropoulos wrote:
>> Hi,
>> 
>> I'm sure that this must have come up before, but I couldn't find the answer. 
>> 
>> Is there any way to read a vector of weights from the LHE v3 format (the ones between the <rwgt> tags I mean) ?
> 
> Not yet. We have most of a working implementation, but HepMC itself
> doesn't yet provide a functional weight container (I'm working on fixing
> it for a patch release) and as far as I know no (?) shower generators
> are currently propagating the weights through to the HepMC output.
> 
> Incidentally, how would you like to have the weights represented in the
> output? We have a plan, but I'm interested to know what people expect!
> 
> Andy
> 
> -- 
> Dr Andy Buckley, Royal Society University Research Fellow
> Particle Physics Expt Group, University of Glasgow / PH Dept, CERN