2017/02/16 by K. Augsten, Augsten, Kamil
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.1702.05026
openalex publication_date 2017/02/16 · openalex created_date 2022/08/30 · openalex updated_date 2026/07/28
We present a measurement of top quark polarization in t\t pair\nproduction in p\p collisions at \√(s)=1.96 TeV using data\ncorresponding to 9.7 fb-1 of integrated luminosity recorded with the D0\ndetector at the Fermilab Tevatron Collider. We consider final states containing\na lepton and at least three jets. The polarization is measured through the\ndistribution of lepton angles along three axes: the beam axis, the helicity\naxis, and the transverse axis normal to the t\t production plane. This\nis the first measurement of top quark polarization at Tevatron using lepton+jet\nfinal states and the first measurement of the transverse polarization in\nt\t production. The observed distributions are consistent with standard\nmodel predictions of nearly no polarization.\n