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Measurement of spin correlation in ttbar production using a matrix element approach

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Measurement of spin correlation in ttbar production using a matrix element approach. / Collaboration, D0; Bertram, Iain; Borissov, Guennadi; Fox, Harald; Ross, Anthony; Williams, Mark; Ratoff, Peter.

In: Physical review letters, Vol. 107, No. 3, 032001, 14.07.2011.

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@article{949ee539c0b2479c8833948c351ea697,
title = "Measurement of spin correlation in ttbar production using a matrix element approach",
abstract = "correlation, assuming that the spin of the top quark is either correlated with the spin of the anti-top quark as predicted by the standard model or is uncorrelated. For the first time we use a matrix-element-based approach to study ttbar spin correlation. We use {ttbar -> W+bW-bbar ->l+nubl-nub} final states produced in ppbar collisions at a center of mass energy sqrt(s)=1.96 TeV, where l denotes an electron or a muon. The data correspond to an integrated luminosity of 5.4 fb-1 and were collected with the dzero detector at the Fermilab Tevatron collider. The result agrees with the standard model prediction. We exclude the hypothesis that the spins of the ttbar are uncorrelated at the 97.7% C.L.",
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 7 pages, 3 figures, submitted to Phys. Rev. Lett",
year = "2011",
month = jul,
day = "14",
doi = "10.1103/PhysRevLett.107.032001",
language = "English",
volume = "107",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Measurement of spin correlation in ttbar production using a matrix element approach

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 7 pages, 3 figures, submitted to Phys. Rev. Lett

PY - 2011/7/14

Y1 - 2011/7/14

N2 - correlation, assuming that the spin of the top quark is either correlated with the spin of the anti-top quark as predicted by the standard model or is uncorrelated. For the first time we use a matrix-element-based approach to study ttbar spin correlation. We use {ttbar -> W+bW-bbar ->l+nubl-nub} final states produced in ppbar collisions at a center of mass energy sqrt(s)=1.96 TeV, where l denotes an electron or a muon. The data correspond to an integrated luminosity of 5.4 fb-1 and were collected with the dzero detector at the Fermilab Tevatron collider. The result agrees with the standard model prediction. We exclude the hypothesis that the spins of the ttbar are uncorrelated at the 97.7% C.L.

AB - correlation, assuming that the spin of the top quark is either correlated with the spin of the anti-top quark as predicted by the standard model or is uncorrelated. For the first time we use a matrix-element-based approach to study ttbar spin correlation. We use {ttbar -> W+bW-bbar ->l+nubl-nub} final states produced in ppbar collisions at a center of mass energy sqrt(s)=1.96 TeV, where l denotes an electron or a muon. The data correspond to an integrated luminosity of 5.4 fb-1 and were collected with the dzero detector at the Fermilab Tevatron collider. The result agrees with the standard model prediction. We exclude the hypothesis that the spins of the ttbar are uncorrelated at the 97.7% C.L.

U2 - 10.1103/PhysRevLett.107.032001

DO - 10.1103/PhysRevLett.107.032001

M3 - Journal article

VL - 107

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 3

M1 - 032001

ER -