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Measurement of the charge asymmetry in highly boosted top-quark pair production in s = 8 TeV pp collision data collected by the ATLAS experiment

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00466020" target="_blank" >RIV/68378271:_____/16:00466020 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1016/j.physletb.2016.02.055" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2016.02.055</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.physletb.2016.02.055" target="_blank" >10.1016/j.physletb.2016.02.055</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Measurement of the charge asymmetry in highly boosted top-quark pair production in s = 8 TeV pp collision data collected by the ATLAS experiment

  • Original language description

    In the pptt process the angular distributions of top and anti-top quarks are expected to present a subtle difference, which could be enhanced by processes not included in the Standard Model. This Letter presents a measurement of the charge asymmetry in events where the top-quark pair is produced with a large invariant mass. The analysis is performed on 20.3 fb 1 of pp collision data at s=8TeV collected by the ATLAS experiment at the LHC, using reconstruction techniques specifically designed for the decay topology of highly boosted top quarks. The charge asymmetry in a fiducial region with large invariant mass of the top-quark pair ( mtt>0.75 TeV ) and an absolute rapidity difference of the top and anti-top quark candidates within 2<|yt||yt|<2 is measured to be 4.23.2% , in agreement with the Standard Model prediction at next-to-leading order. A differential measurement in three tt mass bins is also presented.nn

  • 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

    2016

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physics Letters. B

  • ISSN

    0370-2693

  • e-ISSN

  • Volume of the periodical

    756

  • Issue of the periodical within the volume

    May

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    20

  • Pages from-to

    52-71

  • UT code for WoS article

    000373569200008

  • EID of the result in the Scopus database

    2-s2.0-84960403300