Updated 2006-10-01
The main paper containing the theory of optimal jet definition is this:
[1] F.V. Tkachov, A theory of jet definition, hep-ph/9901444; rev. Jan. 2000,
Int. J. Mod. Phys.A 17, pp. 2783-2884 (2002).
The official public release of the fortran-77 implementation (OJF_014) is
described in
[2] D.Yu. Grigoriev, E. Jankowski, F.V. Tkachov, Towards a standard jet
definition, hep-ph/0301185
(Phys. Rev. Let. 91 (2003) 061801)
[3] D.Yu. Grigoriev, E. Jankowski, F.V. Tkachov, Optimal Jet Finder, hep-ph/0301226
(Comp. Phys. Commun. 155 (2003) 42-64).
Description of the true C++ implementation:
[3++] S. Chumakov, E. Jankowski, F.V. Tkachov, Optimal Jet Finder (v1.0 C++)
(Comp. Phys. Commun., in print), paper.
Please check hep-ph/0301185 for other important references. Some less important references are listed below.
Some notes accompanying the first release are here:
[4] F.V. Tkachov, A verification of the Optimal Jet Finder, hep-ph/0111035.
The codes download page.
Earlier I incorrectly stated that the Babcock-Cutkoski generalization of thrust (J.B. Babcock and R.E. Cutkosky, Identification of jets, Nucl. Phys. B176 (1980) 113.) is equivalent to the Y component of OJD — it is not! OJD uses the jet's momentum instead of the corresponding thrust axis. This simplifies the minimization problem and is why an efficient implementation of OJD is possible.
Some less important references on which [1] builds:
[5] F.V. Tkachov, talk at the ITEP Winter School on High Energy Physics. Goluboy Fakel, Moscow Region. February 26-March 2, 1993 (unpublished).
[6] F.V. Tkachov, Calorimetric measurements and jet counting, talk at the Joint International Workshop on High Energy Physics and Quantum Field Theory (QFTHEP'93). Zvenigorod, Russia. 15-21 September 1993. Eds. B.B. Levtchenko and V.I. Savrin. Moscow, INP MSU, 1993.
[7] F.V. Tkachov, Optimizing computations of jet discriminators, talt at the IX Int. Workshop on High Energy Physics and Quantum Field Theory (QFTHEP'94). Zvenigorod, Russia. 16-22 Sept. 1994. Eds. B.B. Levtchenko and V.I. Savrin. Moscow, INP MSU, 1994.
[8] F.V. Tkachov, An "optimal" jet algorithm. Preprint NORDITA-95/14P.
[9] F.V. Tkachov, From jet algorithms to C-algebra. Measurement errors and regularization of cuts, The X Int. Workshop on High Energy Physics and Quantum Field Theory (QFTHEP'95). Zvenigorod, Russia. 20-26 September 1995. Eds. B.B. Levtchenko and V.I. Savrin. Moscow, INP MSU, 1995 [hep-ph/9701274].
For completeness, here is the January, 1999 version of [1]: ojd1.ps.gz.