[Rivet] Heavy flavour jet definition

[Alan Barr]

Forwarded to the Rivet team, since Andy's out-of-office reply suggests he is moonlighting as a Polish theorist...

-----Original Message-----
From: Alan Barr 
Sent: 13 June 2011 16:31
To: Andy Buckley (andy.buckley at ed.ac.uk)
Cc: Claire Gwenlan; Peter Richardson (peter.richardson at durham.ac.uk)
Subject: Heavy flavour jet definition

Hi Andy, 

    As a man well connected in such things, do you happen to know of any public implementation of the infra-red safe b-jet identification algorithm described in :
http://arxiv.org/abs/hep-ph/0601139? 

"Infrared safe definition of jet flavour"
Andrea Banfi, Gavin P. Salam, Giulia Zanderighi

Abstract: it is common, in both theoretical and experimental studies, to separately discuss quark and gluon jets. However, even at parton level, widely-used jet algorithms fail to provide an infrared safe way of making this distinction. We examine the origin of the problem, and propose a solution in terms of a new "flavour-kt" algorithm. As well as being of conceptual interest this can be a powerful tool when combining fixed-order calculations with multi-jet resummations and parton showers. It also has applications to studies of heavy-quark jets.

It seems exactly the sort of thing that one might expect to find as a Rivet tool. But when Peter did a search he found that the b-jet definitions there are typically just dR matches to b-quarks, or checks for any b-ancestor in the event record.

Alan