Power corrections to the event shape in $e^+e^-$ annihilation
| dc.creator | Tafat, Sofiane | |
| dc.date | 2001-07-18 | |
| dc.date.accessioned | 2026-07-07T03:44:58Z | |
| dc.date.available | 2026-07-07T03:44:58Z | |
| dc.description | We study power corrections to the event shapes in $\e^+\e^--$annihilation in the two jets kinematical region, $e\ll 1$. We argue that for $e \sim Λ_{QCD}/Q$ all power corrections of the form $1/\lr{Qe}^n$ have to be taken into account for an arbitrary $n$. This is achieved by introducing a new universal distribution, the shape function, which describes the energy flow in the final state. The event shape differential distributions are given by a convolution of the shape function with perturbatively resummed cross-sections. Choosing a physically motivated ansatz for the shape function, we observe a good agreement of our predictions with available data on the differential thrust, $C$-parameter and heavy-jet mass distributions and their first few moments. | |
| dc.description | 5 pages, LaTeX, uses moriond.sty (included). Contribution to the proceedings of XXXVIth Rencontres de Moriond: QCD and High Energy Hadronic Interactions, Les Arcs, France, 17-24 March 2001 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0107198 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0107198 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40782 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Power corrections to the event shape in $e^+e^-$ annihilation | |
| dc.type | text |