Measurement of the Angular Distribution of Electrons from W->e nu Decays Observed in ppbar Collisions at sqrt(s)=1.8 TeV
| dc.creator | D0 collaboration | |
| dc.creator | Abbott, B. | |
| dc.date | 2000-09-14 | |
| dc.date.accessioned | 2026-07-07T12:01:32Z | |
| dc.date.available | 2026-07-07T12:01:32Z | |
| dc.description | We present the first measurement of the electron angular distribution parameter alpha_2 in W to e nu events produced in proton-antiproton collisions as a function of the W boson transverse momentum. Our analysis is based on data collected using the D0 detector during the 1994--1995 Fermilab Tevatron run. We compare our results with next-to-leading order perturbative QCD, which predicts an angular distribution of (1 +/- alpha_1 cos theta* + alpha_2 cos^2 theta*), where theta* is the polar angle of the electron in the Collins-Soper frame. In the presence of QCD corrections, the parameters alpha_1 and alpha_2 become functions of p_T^W, the W boson transverse momentum. This measurement provides a test of next-to-leading order QCD corrections which are a non-negligible contribution to the W boson mass measurement. | |
| dc.description | 24 pages, paper submitted to PRD | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0009034 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0009034 | |
| dc.identifier | Phys.Rev.D63:072001,2001 | |
| dc.identifier | doi:10.1103/PhysRevD.63.072001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207129 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the Angular Distribution of Electrons from W->e nu Decays Observed in ppbar Collisions at sqrt(s)=1.8 TeV | |
| dc.type | text |