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Simultaneous measurement of forward-backward asymmetry and top polarization in dilepton final states from tt production at the Tevatron

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00451994" target="_blank" >RIV/68378271:_____/15:00451994 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1103/PhysRevD.92.052007" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.92.052007</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevD.92.052007" target="_blank" >10.1103/PhysRevD.92.052007</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Simultaneous measurement of forward-backward asymmetry and top polarization in dilepton final states from tt production at the Tevatron

  • Original language description

    We present a simultaneous measurement of the forward-backward asymmetry and the top-quark polarization in tt production in dilepton final states using 9.7??fb-1 of proton-antiproton collisions at s=1.96??TeV with the D0 detector. To reconstruct the distributions of kinematic observables we employ a matrix element technique that calculates the likelihood of the possible tt kinematic configurations. After accounting for the presence of background events and for calibration effects, we obtain a forward-backward asymmetry of Att=(15.06.4(stat)4.9(syst))% and a top-quark polarization times spin analyzing power in the beam basis of ?P=(7.210.5(stat)4.2(syst))%, with a correlation of -56% between the measurements. If we constrain the forward-backward asymmetry to its expected standard model value, we obtain a measurement of the top polarization of ?P=(11.39.1(stat)1.9(syst))%.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BF - Elementary particle theory and high energy physics

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2015

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Physical Review D: Particles, Fields, Gravitation and Cosmology

  • ISSN

    1550-7998

  • e-ISSN

  • Volume of the periodical

    92

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    16

  • Pages from-to

    "052007-1"-"052007-16"

  • UT code for WoS article

    000361670200001

  • EID of the result in the Scopus database

    2-s2.0-84943739654