Measurement of the W boson helicity in top quark decays using 5.4 fb-1 of pp̅ collision data

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Measurement of the W boson helicity in top quark decays using 5.4 fb-1 of pp̅ collision data. / Bertram, Iain ; Borissov, Guennadi ; Fox, Harald et al.
In: Physical Review D, Vol. 83, No. 3, 032009, 18.02.2011.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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@article{b330ed8c0d10433b8b28db62607df676,

title = "Measurement of the W boson helicity in top quark decays using 5.4 fb-1 of pp̅ collision data",

abstract = "We present a measurement of the helicity of the W boson produced in top quark decays using tt̅ decays in the ℓ+jets and dilepton final states selected from a sample of 5.4 fb-1 of collisions recorded using the D0 detector at the Fermilab Tevatron pp̅ collider. We measure the fractions of longitudinal and right-handed W bosons to be f0=0.669±0.102[±0.078(stat.)±0.065(syst.)] and f+=0.023±0.053[±0.041(stat.)±0.034(syst.)], respectively. This result is consistent at the 98% level with the standard model. A measurement with f0 fixed to the value from the standard model yields f+=0.010±0.037[±0.022(stat.)±0.030(syst.).].",

author = "Iain Bertram and Guennadi Borissov and Harald Fox and Mark Williams and Peter Ratoff and Peter Love and Andre Sopczak and D0 Collaboration",

note = "{\textcopyright} 2011 American Physical Society",

year = "2011",

month = feb,

day = "18",

doi = "10.1103/PhysRevD.83.032009",

language = "English",

volume = "83",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Physical Society",

number = "3",

}

RIS

TY - JOUR

T1 - Measurement of the W boson helicity in top quark decays using 5.4 fb-1 of pp̅ collision data

AU - Bertram, Iain

AU - Borissov, Guennadi

AU - Fox, Harald

AU - Williams, Mark

AU - Ratoff, Peter

AU - Love, Peter

AU - Sopczak, Andre

AU - Collaboration, D0

PY - 2011/2/18

Y1 - 2011/2/18

N2 - We present a measurement of the helicity of the W boson produced in top quark decays using tt̅ decays in the ℓ+jets and dilepton final states selected from a sample of 5.4 fb-1 of collisions recorded using the D0 detector at the Fermilab Tevatron pp̅ collider. We measure the fractions of longitudinal and right-handed W bosons to be f0=0.669±0.102[±0.078(stat.)±0.065(syst.)] and f+=0.023±0.053[±0.041(stat.)±0.034(syst.)], respectively. This result is consistent at the 98% level with the standard model. A measurement with f0 fixed to the value from the standard model yields f+=0.010±0.037[±0.022(stat.)±0.030(syst.).].

AB - We present a measurement of the helicity of the W boson produced in top quark decays using tt̅ decays in the ℓ+jets and dilepton final states selected from a sample of 5.4 fb-1 of collisions recorded using the D0 detector at the Fermilab Tevatron pp̅ collider. We measure the fractions of longitudinal and right-handed W bosons to be f0=0.669±0.102[±0.078(stat.)±0.065(syst.)] and f+=0.023±0.053[±0.041(stat.)±0.034(syst.)], respectively. This result is consistent at the 98% level with the standard model. A measurement with f0 fixed to the value from the standard model yields f+=0.010±0.037[±0.022(stat.)±0.030(syst.).].

U2 - 10.1103/PhysRevD.83.032009

DO - 10.1103/PhysRevD.83.032009

M3 - Journal article

VL - 83

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 3

M1 - 032009

ER -

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