[Rivet] lifetimes in rivet

[Frank Siegert]

Jonathan Butterworth, Wednesday 07 April 2010:
> I think a confusion has crept in. We are talking about the lifetime for
> a species, not how long a particular instance of a particle lasts.

Ah, thanks for clarifying.
But now I am confused: How can an experimental analysis do this kind of 
thing without using a model to unfold the particles which actually 
happened to decay before the detector? Is this really something that 
should be encouraged?

I don't think it will really matter much. But then it also doesn't matter 
whether we do it with the actual lifetime or the mean lifetime, does it? 
So it would be possible quite easily and generator-independent.

Cheers,
Frank