期刊
PHYSICS LETTERS B
卷 501, 期 3-4, 页码 216-222出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(01)00127-7
关键词
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High energy observables are characterized by large electroweak radiative corrections of infrared origin; double logarithms are present even for inclusive cross sections, thus violating the Bloch-Nordsieck theorem. This effect, related to the initial states carrying non-Abelian isospin charges, is here investigated for any inclusive cross section in the SU(2) x U(1) symmetric limit, that is appropriate for energies much higher than the weak scale. We develop a general formalism allowing to calculate the all order double log resummed cross sections once the hard (tree level) ones are known. The relevant cases of fermion-fermion, fermion-boson and boson-boson scattering are discussed. (C) 2001 Published by Elsevier Science B.V.
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