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Measurement of the direct CP-violating parameter A_CP in the decay D+ -> K- pi+ pi+

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Measurement of the direct CP-violating parameter A_CP in the decay D+ -> K- pi+ pi+. / D0 Collaboration.

In: Physical Review D, Vol. 90, No. 11, 111102, 11.12.2014.

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D0 Collaboration. / Measurement of the direct CP-violating parameter A_CP in the decay D+ -> K- pi+ pi+. In: Physical Review D. 2014 ; Vol. 90, No. 11.

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@article{ee98071978d1484c95cfe2d89bd2a3a0,
title = "Measurement of the direct CP-violating parameter A_CP in the decay D+ -> K- pi+ pi+",
abstract = "We measure the direct CP-violating parameter A_CP for the decay of the charged charm meson, D+ -> K-pi+pi+ (and charge conjugate), using the full 10.4 fb-1 sample of ppbar collisions at sqrt(s) = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron collider. We extract the raw reconstructed charge asymmetry by fitting the invariant mass distributions for the sum and difference of charge-specific samples. This quantity is then corrected for detector-related asymmetries using data-driven methods and for possible physics asymmetries (from B -> D processes) using input from Monte Carlo simulation. We measure A_CP = [-0.16 +- 0.15 (stat.) +- 0.09 (syst.)]%, which is consistent with zero, as expected from the standard model prediction of CP conservation, and is the most precise measurement of this quantity to date",
keywords = "hep-ex",
author = "Iain Bertram and Guennadi Borissov and Harald Fox and Mark Williams and Peter Ratoff and Darren Price and Anthony Ross and {D0 Collaboration}",
year = "2014",
month = dec,
day = "11",
doi = "10.1103/PhysRevD.90.111102",
language = "English",
volume = "90",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "11",

}

RIS

TY - JOUR

T1 - Measurement of the direct CP-violating parameter A_CP in the decay D+ -> K- pi+ pi+

AU - Bertram, Iain

AU - Borissov, Guennadi

AU - Fox, Harald

AU - Williams, Mark

AU - Ratoff, Peter

AU - Price, Darren

AU - Ross, Anthony

AU - D0 Collaboration

PY - 2014/12/11

Y1 - 2014/12/11

N2 - We measure the direct CP-violating parameter A_CP for the decay of the charged charm meson, D+ -> K-pi+pi+ (and charge conjugate), using the full 10.4 fb-1 sample of ppbar collisions at sqrt(s) = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron collider. We extract the raw reconstructed charge asymmetry by fitting the invariant mass distributions for the sum and difference of charge-specific samples. This quantity is then corrected for detector-related asymmetries using data-driven methods and for possible physics asymmetries (from B -> D processes) using input from Monte Carlo simulation. We measure A_CP = [-0.16 +- 0.15 (stat.) +- 0.09 (syst.)]%, which is consistent with zero, as expected from the standard model prediction of CP conservation, and is the most precise measurement of this quantity to date

AB - We measure the direct CP-violating parameter A_CP for the decay of the charged charm meson, D+ -> K-pi+pi+ (and charge conjugate), using the full 10.4 fb-1 sample of ppbar collisions at sqrt(s) = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron collider. We extract the raw reconstructed charge asymmetry by fitting the invariant mass distributions for the sum and difference of charge-specific samples. This quantity is then corrected for detector-related asymmetries using data-driven methods and for possible physics asymmetries (from B -> D processes) using input from Monte Carlo simulation. We measure A_CP = [-0.16 +- 0.15 (stat.) +- 0.09 (syst.)]%, which is consistent with zero, as expected from the standard model prediction of CP conservation, and is the most precise measurement of this quantity to date

KW - hep-ex

U2 - 10.1103/PhysRevD.90.111102

DO - 10.1103/PhysRevD.90.111102

M3 - Journal article

VL - 90

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 11

M1 - 111102

ER -