The thrust and heavy-jet mass distributions in the two-jet region
| dc.creator | Gardi, Einan | |
| dc.creator | Rathsman, Johan | |
| dc.date | 2002-01-04 | |
| dc.date | 2002-06-09 | |
| dc.date.accessioned | 2026-07-07T11:31:12Z | |
| dc.date.available | 2026-07-07T11:31:12Z | |
| dc.description | Dressed Gluon Exponentiation (DGE) is used to calculate the thrust and the heavy-jet mass distributions in e+e- annihilation in the two-jet region. We perform a detailed analysis of power corrections, taking care of the effect of hadron masses on the measured observables. In DGE the Sudakov exponent is calculated in a renormalization-scale invariant way using renormalon resummation. Neglecting the correlation between the hemispheres in the two-jet region, we express the thrust and the heavy-jet mass distributions in terms of the single-jet mass distribution. This leads to a simple description of the hadronization corrections to both distributions in terms of a single shape function, whose general properties are deduced from renormalon ambiguities. Matching the resummed result with the available next-to-leading order calculation, we get a good description of the thrust distribution in a wide range, whereas the description of the heavy-jet mass distribution, which is more sensitive to the approximation of the phase space, is restricted to the range rho_H<1/6. This significantly limits the possibility to determine alpha_s from this observable. However, fixing alpha_s by the thrust analysis, we show that the power corrections for the two observables are in good agreement. | |
| dc.description | minor modifications; 46 pages, 11 post-script figures; to appear in Nucl. Phys. B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0201019 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0201019 | |
| dc.identifier | Nucl.Phys.B638:243-287,2002 | |
| dc.identifier | doi:10.1016/S0550-3213(02)00502-3 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/197190 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The thrust and heavy-jet mass distributions in the two-jet region | |
| dc.type | text |