Abazov, VM;
Abbott, B;
Acharya, BS;
Adams, M;
Adams, T;
Agnew, JP;
Alexeev, GD;
... Zivkovic, L; + view all
(2017)
Measurement of top quark polarization in t(t)over-bar lepton+jets final states.
Physical Review D
, 95
(1)
, Article 011101. 10.1103/PhysRevD.95.011101.
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Abstract
We present a measurement of top quark polarization in t¯t pair production in p¯p collisions at √s=1.96 TeV using data corresponding to 9.7 fb−1 of integrated luminosity recorded with the D0 detector at the Fermilab Tevatron Collider. We consider final states containing a lepton and at least three jets. The polarization is measured through the distribution of lepton angles along three axes: the beam axis, the helicity axis, and the transverse axis normal to the t¯t production plane. This is the first measurement of top quark polarization at the Tevatron using lepton+jet final states and the first measurement of the transverse polarization in t¯t production. The observed distributions are consistent with standard model predictions of nearly no polarization.
| Type: | Article |
|---|---|
| Title: | Measurement of top quark polarization in t(t)over-bar lepton+jets final states |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.95.011101 |
| Publisher version: | http://doi.org/10.1103/PhysRevD.95.011101 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1551771 |
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