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

Kaoru Hagiwara, Grisha Kirilin
2010 Journal of High Energy Physics  
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
more » ... 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.
doi:10.1007/jhep10(2010)093 fatcat:lkvvt6hdenehjfeg4jqqcndfhq