Measurement of top quark polarization in tt¯ lepton+jets final states

(D0 Collaboration)

doi:10.1103/PhysRevD.95.011101

Measurement of top quark polarization in tt¯ lepton+jets final states

(D0 Collaboration)

Physics and Astronomy

Joint Institute for Nuclear Research
University of Oklahoma
Tata Institute of Fundamental Research
University of Illinois at Chicago
Florida State University
University of Manchester
Petersburg Nuclear Physics InstituteGatchina
University of Michigan, Ann Arbor
Augustana College, Sioux Falls
Louisiana Tech University
Czech Technical University in Prague
Kyiv National Taras Shevchenko University
Universidad de los Andes Colombia
CNRS
Fermi National Accelerator Laboratory
University of Virginia
Northeastern University
University of Kansas
CEA Saclay
Universidade do Estado do Rio de Janeiro
Panjab University
Universités Paris VI and VII
University of Freiburg
Lancaster University
Imperial College London
University of Mississippi
Northern Illinois University
University of Nebraska-Lincoln
Stony Brook University
Lomonosov Moscow State University
NASU - Institute of Nuclear Research
University of Texas at Arlington
University of Göttingen
University of Washington

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We present a measurement of top quark polarization in tt- pair production in pp- 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 tt- 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 tt- production. The observed distributions are consistent with standard model predictions of nearly no polarization.

Original language	English
Article number	011101
Journal	Physical Review D
Volume	95
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.95.011101
State	Published - Jan 9 2017

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10.1103/PhysRevD.95.011101

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@article{b64977ab208d45a9aa7a3f8cda05d9a4,

title = "Measurement of top quark polarization in tt¯ lepton+jets final states",

abstract = "We present a measurement of top quark polarization in tt- pair production in pp- 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 tt- 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 tt- production. The observed distributions are consistent with standard model predictions of nearly no polarization.",

author = "\{(D0 Collaboration)\} and Abazov, \{V. M.\} and B. Abbott and Acharya, \{B. S.\} and M. Adams and T. Adams and Agnew, \{J. P.\} and Alexeev, \{G. D.\} and G. Alkhazov and A. Alton and A. Askew and S. Atkins and K. Augsten and V. Aushev and Y. Aushev and C. Avila and F. Badaud and L. Bagby and B. Baldin and Bandurin, \{D. V.\} and S. Banerjee and E. Barberis and P. Baringer and Bartlett, \{J. F.\} and U. Bassler and V. Bazterra and A. Bean and M. Begalli and L. Bellantoni and Beri, \{S. B.\} and G. Bernardi and R. Bernhard and I. Bertram and M. Besan{\c c}on and R. Beuselinck and Bhat, \{P. C.\} and S. Bhatia and V. Bhatnagar and G. Blazey and S. Blessing and K. Bloom and A. Boehnlein and D. Boline and Boos, \{E. E.\} and G. Borissov and M. Borysova and A. Brandt and O. Brandt and M. Brochmann and Hobbs, \{J. D.\} and D. Tsybychev",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = jan,

day = "9",

doi = "10.1103/PhysRevD.95.011101",

language = "English",

volume = "95",

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TY - JOUR

T1 - Measurement of top quark polarization in tt¯ lepton+jets final states

AU - (D0 Collaboration)

AU - Abazov, V. M.

AU - Abbott, B.

AU - Acharya, B. S.

AU - Adams, M.

AU - Adams, T.

AU - Agnew, J. P.

AU - Alexeev, G. D.

AU - Alkhazov, G.

AU - Alton, A.

AU - Askew, A.

AU - Atkins, S.

AU - Augsten, K.

AU - Aushev, V.

AU - Aushev, Y.

AU - Avila, C.

AU - Badaud, F.

AU - Bagby, L.

AU - Baldin, B.

AU - Bandurin, D. V.

AU - Banerjee, S.

AU - Barberis, E.

AU - Baringer, P.

AU - Bartlett, J. F.

AU - Bassler, U.

AU - Bazterra, V.

AU - Bean, A.

AU - Begalli, M.

AU - Bellantoni, L.

AU - Beri, S. B.

AU - Bernardi, G.

AU - Bernhard, R.

AU - Bertram, I.

AU - Besançon, M.

AU - Beuselinck, R.

AU - Bhat, P. C.

AU - Bhatia, S.

AU - Bhatnagar, V.

AU - Blazey, G.

AU - Blessing, S.

AU - Bloom, K.

AU - Boehnlein, A.

AU - Boline, D.

AU - Boos, E. E.

AU - Borissov, G.

AU - Borysova, M.

AU - Brandt, A.

AU - Brandt, O.

AU - Brochmann, M.

AU - Hobbs, J. D.

AU - Tsybychev, D.

PY - 2017/1/9

Y1 - 2017/1/9

N2 - We present a measurement of top quark polarization in tt- pair production in pp- 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 tt- 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 tt- production. The observed distributions are consistent with standard model predictions of nearly no polarization.

AB - We present a measurement of top quark polarization in tt- pair production in pp- 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 tt- 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 tt- production. The observed distributions are consistent with standard model predictions of nearly no polarization.

UR - https://www.scopus.com/pages/publications/85016313492

U2 - 10.1103/PhysRevD.95.011101

DO - 10.1103/PhysRevD.95.011101

M3 - Article

AN - SCOPUS:85016313492

SN - 2470-0010

VL - 95

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 011101

ER -

Measurement of top quark polarization in tt¯ lepton+jets final states

Abstract

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