On the QCD analysis of Jet Broadening

Details On the QCD analysis of Jet Broadening On the QCD analysis of Jet Broadening

1998-01-16

arxiv.org/abs/hep-ph/9801324v2

JHEP 9801:011,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 4 eps figures, includes JHEP.cls; corrected typos in equations 4.29 and 5.7

Scientific paper

The perturbative all-order analysis of the jet-broadening B-distribution in the small-B region is carried out with single-logarithmic accuracy, which requires the control of both the sum of the moduli and the modulus of the sum of the transverse momenta of soft gluons. We confirm the master equation for the B-distribution derived by Catani, Turnock and Webber (CTW). Proper treatment of quark recoil is necessary at this accuracy. This effect was neglected in the CTW solution. We show that the answer can be expressed in terms of the CTW result but evaluated at a properly rescaled B value.

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