Angular distribution of thrust axis with power-suppressed contribution in e+e- annihilation

Details Angular distribution of thrust axis with power-suppressed contribution in e+e- annihilation Angular distribution of thrust axis with power-suppressed contribution in e+e- annihilation

2010-06-28

arxiv.org/abs/1006.5330v1

JHEP 1010:093,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 9 figures

Scientific paper

10.1007/JHEP10(2010)093

Structure function of e+e- to hadrons cross section proportional to the longitudinal part of the hadron tensor is power suppressed with respect to an event shape variable in the two-jet region. In the SCET framework, we study the event shape distribution for this structure function to NLL level of accuracy. As, a result we obtain the angular distribution of hadron jets as a function of the thrust, in the two jet region. We further examine effects of non-perturbative hadronization corrections by adopting a shape function that reproduce the observed event shape distributions. Impacts of our findings on the electroweak measurements via the jet angular forward-backward asymmetry are discussed.

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