Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-09-28
Phys.Rev. D65 (2002) 094031
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 8 eps figures. Revised to include a discussion of non-global logarithms
Scientific paper
10.1103/PhysRevD.65.094031
We study the distribution of transverse energy, Q_Omega, radiated into an arbitrary interjet angular region, Omega, in high-p_T two-jet events. Using an approximation that emphasizes radiation directly from the partons that undergo the hard scattering, we find a distribution that can be extrapolated smoothly to Q_Omega=Lambda_QCD, where it vanishes. This method, which we apply numerically in a valence quark approximation, provides a class of predictions on transverse energy radiated between jets, as a function of jet energy and rapidity, and of the choice of the region Omega in which the energy is measured. We discuss the relation of our approximation to the radiation from unobserved partons of intermediate energy, whose importance was identified by Dasgupta and Salam.
Berger Carola F.
Kucs Tibor
Sterman George
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