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Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis at √s=7  TeV using the ATLAS detector

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Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis at √s=7  TeV using the ATLAS detector. / The ATLAS collaboration.
In: Physical Review D, Vol. 93, No. 1, 012002, 13.01.2016.

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The ATLAS collaboration. Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis at √s=7  TeV using the ATLAS detector. Physical Review D. 2016 Jan 13;93(1):012002. doi: 10.1103/PhysRevD.93.012002

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@article{6b31569ed32d4677818753fa24f625be,
title = "Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis at √s=7  TeV using the ATLAS detector",
abstract = "A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t and t¯ quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 4.6  fb−1 at a center-of-mass energy of s√=7  TeV collected during 2011. Candidate events are selected in the dilepton topology with large missing transverse momentum and at least two jets. The angles θ1 and θ2 between the charged leptons and the direction of motion of the parent quarks in the tt¯ rest frame are sensitive to the spin information, and the distribution of cosθ1⋅cosθ2 is sensitive to the spin correlation between the t and t¯ quarks. The distribution is unfolded to parton level and compared to the next-to-leading order prediction. A good agreement is observed.",
author = "Barton, {Adam Edward} and Michael Beattie and Guennadi Borissov and Bouhova-Thacker, {Evelina Vassileva} and William Dearnaley and Harald Fox and Grimm, {Kathryn Ann Tschann} and Henderson, {Robert Charles William} and Gareth Hughes and Jones, {Roger William Lewis} and Vakhtang Kartvelishvili and Long, {Robin Eamonn} and Love, {Peter Allan} and Harvey Maddocks and Malcolm Skinner and Maria Smizanska and Walder, {James William} and Andy Wharton and {The ATLAS collaboration}",
year = "2016",
month = jan,
day = "13",
doi = "10.1103/PhysRevD.93.012002",
language = "English",
volume = "93",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "1",

}

RIS

TY - JOUR

T1 - Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis at √s=7  TeV using the ATLAS detector

AU - Barton, Adam Edward

AU - Beattie, Michael

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Evelina Vassileva

AU - Dearnaley, William

AU - Fox, Harald

AU - Grimm, Kathryn Ann Tschann

AU - Henderson, Robert Charles William

AU - Hughes, Gareth

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin Eamonn

AU - Love, Peter Allan

AU - Maddocks, Harvey

AU - Skinner, Malcolm

AU - Smizanska, Maria

AU - Walder, James William

AU - Wharton, Andy

AU - The ATLAS collaboration

PY - 2016/1/13

Y1 - 2016/1/13

N2 - A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t and t¯ quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 4.6  fb−1 at a center-of-mass energy of s√=7  TeV collected during 2011. Candidate events are selected in the dilepton topology with large missing transverse momentum and at least two jets. The angles θ1 and θ2 between the charged leptons and the direction of motion of the parent quarks in the tt¯ rest frame are sensitive to the spin information, and the distribution of cosθ1⋅cosθ2 is sensitive to the spin correlation between the t and t¯ quarks. The distribution is unfolded to parton level and compared to the next-to-leading order prediction. A good agreement is observed.

AB - A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t and t¯ quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 4.6  fb−1 at a center-of-mass energy of s√=7  TeV collected during 2011. Candidate events are selected in the dilepton topology with large missing transverse momentum and at least two jets. The angles θ1 and θ2 between the charged leptons and the direction of motion of the parent quarks in the tt¯ rest frame are sensitive to the spin information, and the distribution of cosθ1⋅cosθ2 is sensitive to the spin correlation between the t and t¯ quarks. The distribution is unfolded to parton level and compared to the next-to-leading order prediction. A good agreement is observed.

U2 - 10.1103/PhysRevD.93.012002

DO - 10.1103/PhysRevD.93.012002

M3 - Journal article

VL - 93

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 1

M1 - 012002

ER -