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Title: Measurement of Top Quark Polarization in $$t\bar{t}$$ Lepton + Jets Final States at D0

Abstract

We present a measurement of top quark polarization in $$t\bar{t}$$ pair production in $$p\bar{p}$$ collisions at $$\sqrt{s}=1.96$$ 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 $$t\bar{t}$$ production plane. This is the first measurement of top quark polarization at Tevatron using lepton+jet final states and the first measurement of the transverse polarization in $$t\bar{t}$$ production. The observed distributions are consistent with standard model predictions of nearly no polarization.

Authors:
ORCiD logo [1]
  1. Prague, Tech. U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
D0
OSTI Identifier:
1354874
Report Number(s):
arXiv:1702.05026; FERMILAB-CONF-17-098-E
1513786
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 9th International Workshop on Top Quark Physics, Olomouc, Czech Republic, 09/19-09/23/2016
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Augsten, Kamil. Measurement of Top Quark Polarization in $t\bar{t}$ Lepton + Jets Final States at D0. United States: N. p., 2017. Web.
Augsten, Kamil. Measurement of Top Quark Polarization in $t\bar{t}$ Lepton + Jets Final States at D0. United States.
Augsten, Kamil. Thu . "Measurement of Top Quark Polarization in $t\bar{t}$ Lepton + Jets Final States at D0". United States. doi:. https://www.osti.gov/servlets/purl/1354874.
@article{osti_1354874,
title = {Measurement of Top Quark Polarization in $t\bar{t}$ Lepton + Jets Final States at D0},
author = {Augsten, Kamil},
abstractNote = {We present a measurement of top quark polarization in $t\bar{t}$ pair production in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ 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 $t\bar{t}$ production plane. This is the first measurement of top quark polarization at Tevatron using lepton+jet final states and the first measurement of the transverse polarization in $t\bar{t}$ production. The observed distributions are consistent with standard model predictions of nearly no polarization.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 16 00:00:00 EST 2017},
month = {Thu Feb 16 00:00:00 EST 2017}
}

Conference:
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