Enhanced Nonperturbative Effects in Z Decays to Hadrons
Christian W. Bauer, Christopher Lee, Aneesh V. Manohar, Mark B. Wise
Abstract
We use soft collinear effective field theory (SCET) to study nonperturbative strong interaction effects in Z decays to hadronic final states that are enhanced in corners of phase space. These occur, for example, in the jet energy distribution for two jet events near EJ=MZ/2, the thrust distribution near unity and the jet invariant mass distribution near zero. The extent to which such nonperturbative effects for different observables are related is discussed.
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