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Measurement of the top quark mass in final states with two leptons

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Measurement of the top quark mass in final states with two leptons. / Collaboration, D0; Bertram, Iain; Borissov, Guennadi; Fox, Harald; Williams, Mark; Ratoff, Peter; Love, Peter; Rakitin, Alexander; Sopczak, Andre.

In: Physical Review D, Vol. 80, No. 9, 092006, 20.11.2009.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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@article{37f1a437328a4e98b06312080361877d,
title = "Measurement of the top quark mass in final states with two leptons",
abstract = "We present measurements of the top quark mass in ttbar candidate events with two final state leptons using 1 inverse fb of data collected by the D0 experiment. Our data sample is selected by requiring two fully identified leptons or by relaxing one lepton requirement to an isolated track if at least one jet is tagged as a b jet. The top quark mass is extracted after reconstructing the event kinematics under the ttbar hypothesis using two methods. In the first method, we integrate over expected neutrino rapidity distributions, and in the second we calculate a weight for the possible top quark masses based on the observed particle momenta and the known parton distribution functions. We analyze 83 candidate events in data and obtain m_t = 176.2 +/- 4.8 (stat) +/- 2.1 (sys) GeV and m_t = 173.2 +/- 4.9 (stat) +/- 2.0 (sys) GeV for the two methods, respectively. Accounting for correlations between the two methods, we combine the measurements to obtain m_t = 174.7 +/- 4.4 (stat) +/- 2.0 (sys) GeV.",
author = "D0 Collaboration and Iain Bertram and Guennadi Borissov and Harald Fox and Mark Williams and Peter Ratoff and Peter Love and Alexander Rakitin and Andre Sopczak",
note = "{\textcopyright} 2009 The American Physical Society 22 pages, 11 figures, subm. to Phys. Rev. D",
year = "2009",
month = nov,
day = "20",
doi = "10.1103/PhysRevD.80.092006",
language = "English",
volume = "80",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "9",

}

RIS

TY - JOUR

T1 - Measurement of the top quark mass in final states with two leptons

AU - Collaboration, D0

AU - Bertram, Iain

AU - Borissov, Guennadi

AU - Fox, Harald

AU - Williams, Mark

AU - Ratoff, Peter

AU - Love, Peter

AU - Rakitin, Alexander

AU - Sopczak, Andre

N1 - © 2009 The American Physical Society 22 pages, 11 figures, subm. to Phys. Rev. D

PY - 2009/11/20

Y1 - 2009/11/20

N2 - We present measurements of the top quark mass in ttbar candidate events with two final state leptons using 1 inverse fb of data collected by the D0 experiment. Our data sample is selected by requiring two fully identified leptons or by relaxing one lepton requirement to an isolated track if at least one jet is tagged as a b jet. The top quark mass is extracted after reconstructing the event kinematics under the ttbar hypothesis using two methods. In the first method, we integrate over expected neutrino rapidity distributions, and in the second we calculate a weight for the possible top quark masses based on the observed particle momenta and the known parton distribution functions. We analyze 83 candidate events in data and obtain m_t = 176.2 +/- 4.8 (stat) +/- 2.1 (sys) GeV and m_t = 173.2 +/- 4.9 (stat) +/- 2.0 (sys) GeV for the two methods, respectively. Accounting for correlations between the two methods, we combine the measurements to obtain m_t = 174.7 +/- 4.4 (stat) +/- 2.0 (sys) GeV.

AB - We present measurements of the top quark mass in ttbar candidate events with two final state leptons using 1 inverse fb of data collected by the D0 experiment. Our data sample is selected by requiring two fully identified leptons or by relaxing one lepton requirement to an isolated track if at least one jet is tagged as a b jet. The top quark mass is extracted after reconstructing the event kinematics under the ttbar hypothesis using two methods. In the first method, we integrate over expected neutrino rapidity distributions, and in the second we calculate a weight for the possible top quark masses based on the observed particle momenta and the known parton distribution functions. We analyze 83 candidate events in data and obtain m_t = 176.2 +/- 4.8 (stat) +/- 2.1 (sys) GeV and m_t = 173.2 +/- 4.9 (stat) +/- 2.0 (sys) GeV for the two methods, respectively. Accounting for correlations between the two methods, we combine the measurements to obtain m_t = 174.7 +/- 4.4 (stat) +/- 2.0 (sys) GeV.

U2 - 10.1103/PhysRevD.80.092006

DO - 10.1103/PhysRevD.80.092006

M3 - Journal article

VL - 80

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 9

M1 - 092006

ER -