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Direct measurement of the mass difference between top and antitop quarks

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Direct measurement of the mass difference between top and antitop quarks. / Collaboration, D0; Bertram, Iain; Borissov, Guennadi; Fox, Harald; Ross, Anthony; Williams, Mark; Ratoff, Peter.

In: Physical Review D, Vol. 84, No. 5, 052005, 14.09.2011.

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@article{62ee44f7bf53459da6679da8fbf384b2,
title = "Direct measurement of the mass difference between top and antitop quarks",
abstract = "We present a direct measurement of the mass difference between top and antitop quarks (dm) in lepton+jets top-antitop final states using the {"}matrix element{"} method. The purity of the lepton+jets sample is enhanced for top-antitop events by identifying at least one of the jet as originating from a b quark. The analyzed data correspond to 3.6 fb-1 of proton-antiproton collisions at 1.96 TeV acquired by D0 in Run II of the Fermilab Tevatron Collider. The combination of the e+jets and mu+jets channels yields dm = 0.8 +/- 1.8 (stat) +/- 0.5 (syst) GeV, which is in agreement with the standard model expectation of no mass difference.",
author = "D0 Collaboration and Iain Bertram and Guennadi Borissov and Harald Fox and Anthony Ross and Mark Williams and Peter Ratoff",
note = "{\textcopyright} 2011 American Physical Society submitted to Phys. Rev. D",
year = "2011",
month = sep,
day = "14",
doi = "10.1103/PhysRevD.84.052005",
language = "English",
volume = "84",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "5",

}

RIS

TY - JOUR

T1 - Direct measurement of the mass difference between top and antitop quarks

AU - Collaboration, D0

AU - Bertram, Iain

AU - Borissov, Guennadi

AU - Fox, Harald

AU - Ross, Anthony

AU - Williams, Mark

AU - Ratoff, Peter

N1 - © 2011 American Physical Society submitted to Phys. Rev. D

PY - 2011/9/14

Y1 - 2011/9/14

N2 - We present a direct measurement of the mass difference between top and antitop quarks (dm) in lepton+jets top-antitop final states using the "matrix element" method. The purity of the lepton+jets sample is enhanced for top-antitop events by identifying at least one of the jet as originating from a b quark. The analyzed data correspond to 3.6 fb-1 of proton-antiproton collisions at 1.96 TeV acquired by D0 in Run II of the Fermilab Tevatron Collider. The combination of the e+jets and mu+jets channels yields dm = 0.8 +/- 1.8 (stat) +/- 0.5 (syst) GeV, which is in agreement with the standard model expectation of no mass difference.

AB - We present a direct measurement of the mass difference between top and antitop quarks (dm) in lepton+jets top-antitop final states using the "matrix element" method. The purity of the lepton+jets sample is enhanced for top-antitop events by identifying at least one of the jet as originating from a b quark. The analyzed data correspond to 3.6 fb-1 of proton-antiproton collisions at 1.96 TeV acquired by D0 in Run II of the Fermilab Tevatron Collider. The combination of the e+jets and mu+jets channels yields dm = 0.8 +/- 1.8 (stat) +/- 0.5 (syst) GeV, which is in agreement with the standard model expectation of no mass difference.

U2 - 10.1103/PhysRevD.84.052005

DO - 10.1103/PhysRevD.84.052005

M3 - Journal article

VL - 84

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 5

M1 - 052005

ER -