Anyone have a good answer for this?
On Jun 18, 2014, at 10:25 AM, Rafayel Paremuzyan <[log in to unmask]> wrote:
> Dear jeremy,
>
> I am running a very simple code over Mock Data,
> and now I am trying to get Lorentz Vectors of two MCParticles, and
> reconstruct their invariant mass.
>
> In the following documentation
> http://www.lcsim.org/sites/lcsim/apidocs/index.html
> I found a method "asFourVector" which returns "HepLorentzVector" type
> object,
> however looks like "HepLorentzVector" has very limited methods, and in
> particular I didn't
> find a way to sum two "HepLorentzVector"s.
>
> There is also another class "Lorentz4Vector" which has much more methods
> including the sum.
> Now I am not sure how to get Lorentz4Vector from MCParticle.
>
> Is there a simple way of doing that?
>
> Rafayel
>
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