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	The EnergyCorrelator package is based on the physics described in:

	Energy Correlation Functions for Jet Substructure.
	Andrew J. Larkoski, Gavin Salam, and Jesse Thaler.
	arXiv:1305.xxxx.

	This FastJet-contrib package contains three classes derived from
	FunctionOfPseudoJet<double> :

	EnergyCorrelator(int N, double beta, Measure measure)

	Called ECF(N,beta) in the publication. Corresponds to the N-point
	correlation function, with beta the angular exponent, while measure
	= pt_R (default) or E_theta sets how energies and angles are
	determined.

	EnergyCorrelatorRatio(int N, double beta, Measure measure)

	Called r_N^(beta) in the publication.
	Equals ECF(N+1,beta)/ECF(N,beta).

	EnergyCorrelatorDoubleRatio(int N, double beta, Measure measure)

	Called C_N^(beta) in the publication. Equals r_N/r_{N-1}. This is
	the recommended function for boosted N-prong object discrimination.
	(N=1 for quark/gluon, N=2 for boosted W/Z/H, N=3 for boosted top)

	Usage is shown in the example.cc program.