[Rivet] RIVET -- how can I access all particles?

[Andrey Loginov]

Dear Andy, Dear Colleagues,

   I've got a suggestion and it seems to be doing what I need (i.e. I can 
access all particles). Indeed I'm aware of all those dragons -- just want 
to have a slightly more information than final-state particles... Other 
than that the Rivet machinery seems to be quite functional -- thanks!

Happy Easter,

Thank you and Best Regards,
                 Andrey Loginov   |   Yale University (Physics Department)
                 Phone(work/CERN) |   +41 22 76 73641 (from CERN  7-36-41)
                 Phone(cell/CERN) |   +41 76 487 2288 (from CERN 16-22-88)
                 Fax              |   +41 22 76 68579

On Thu, 2 Apr 2015, Andy Buckley wrote:

> Hi Andrey,
>
> You're right, that's exactly what Rivet is designed to discourage!
>
> You _can_ obtain that information -- if it is in the event record at all
> -- by accessing the raw HepMC GenEvent object with a call to
> event.genEvent(). But you're then on your own, i.e. you'll have to
> manually deal with problems like the lack of a standard inertial frame
> and representation of parton shower recoils for those objects. "Here be
> dragons", in other words ;-)
>
> Andy
>
>
> On 02/04/15 14:56, Andrey Loginov wrote:
>> Dear Rivet experts, Dear Andy,
>>
>>   I googled for quite a while but couldn't answer to this question:
>>
>>   How can I access all particles? (not only the final-state ones)
>>
>>   For instance, for ttbar production I'd want to be able to access
>> information about the top quarks and W's -- is that possible? I
>> understand that Rivet is designed for final-state information, but in
>> case if there is a functionality like that it would be quite useful for
>> some applications.
>>
>> Thank you and Best Regards,
>>                 Andrey Loginov   |   Yale University (Physics Department)
>>                 Phone(work/CERN) |   +41 22 76 73641 (from CERN  7-36-41)
>>                 Phone(cell/CERN) |   +41 76 487 2288 (from CERN 16-22-88)
>>                 Fax              |   +41 22 76 68579
>
>
> -- 
> Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
> Particle Physics Expt Group, University of Glasgow
>