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

作者：Hagiwara Kaoru^*; Kirilin Grisha

来源：The Journal of High Energy Physics, 2010, (10): 093.

DOI：10.1007/JHEP10(2010)093

• Jets
• LEP HERA and SLC Physics
• QCD

Structure function of e(+)e(-) -> 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.

• 出版日期2010-10