Measurement of the W boson helicity in top quark decay at D0
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. M. | |
| dc.date | 2006-09-25 | |
| dc.date.accessioned | 2026-07-07T11:58:18Z | |
| dc.date.available | 2026-07-07T11:58:18Z | |
| dc.description | We present a measurement of the fraction f_+ of right-handed W bosons produced in top quark decays, based on a candidate sample of ttbar events in the l+jets and dilepton decay channels corresponding to an integrated luminosity of 370 pb^-1 collected by the DO detector at the Fermilab Tevatron ppbar Collider at sqrt{s}=1.96 TeV. We reconstruct the decay angle theta^* for each lepton. By comparing the \cosθ^* distribution from the data with those for the expected background and signal for various values of f_+, we find $f_+=0.056 +- 0.080 (stat) +- 0.057 (syst)}. (f_+ < 0.23 at 95% C.L.), consistent with the standard model prediction of f_+=3.6 x10^-4. | |
| dc.description | Submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0609045 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0609045 | |
| dc.identifier | Phys.Rev.D75:031102,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.031102 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206178 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the W boson helicity in top quark decay at D0 | |
| dc.type | text |