Measurement of the Angular Distribution of Electrons from W to e nu Decays Observed in ppbar Collisions at sqrt(s) = 1.8 TeV
| dc.creator | D0 Collaboration | |
| dc.creator | Abbott, B. | |
| dc.date | 1999-07-15 | |
| dc.date.accessioned | 2026-07-07T03:37:57Z | |
| dc.date.available | 2026-07-07T03:37:57Z | |
| dc.description | We present a preliminary measurement of the electron angular distribution parameter alpha2 in W to e nu events using data collected by the D0 detector during the 1994--1995 Tevatron run. We compare our results with next-to-leading order perturbative QCD, which predicts an angular distribution of 1 +/- alpha1 cos theta* +alpha_2 cos^2 theta*, where theta* is the angle between the charged lepton and the antiproton in the Collins-Soper frame. In the presence of QCD corrections, the parameters alpha1 and alpha2 become functions of pT(W), the W boson transverse momentum. We present the first measurement of alpha_2 as a function of pT(W). This measurement is of importance, because it provides a test of next-to-leading order QCD corrections which are a non-negligible contribution to the W mass measurement. | |
| dc.description | Contributed paper to EPS99 and Lepton-Photon99, 15 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9907022 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9907022 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/38333 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the Angular Distribution of Electrons from W to e nu Decays Observed in ppbar Collisions at sqrt(s) = 1.8 TeV | |
| dc.type | text |