[Rivet] CMS event shapes from hell

[Holger Schulz]

Hi,

so the last analysis to be considered for  rel 2.4.0 is this beauty:

    CMS_2014_I1305624

which comes as 3 files with an external dependency on CLHEP
in it's own light weight event-shape library of 800 lines of codes.

That's in the header:

    /*  \class EventShape
    *
    *  Class that, given the 4-momenta of the objects in the event,
    *  allows to calculate event shapes (see below)
    *
    *  Authors: Matthias Weber                 Date: July/October 2007
    *
    */


I am very much in favour of sending a strong message to CMS
and ask them to redo this properly for Rivet 2.5 or so.
As far as I can see they need thrust, jet hemisphere broadening
and y23 which are all  perfectly well available already without
external dependencies.

Any thoughts?


Cheers,
Holger
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