University Library
  • Login
A gateway to Melbourne's research publications
Minerva Access is the University's Institutional Repository. It aims to collect, preserve, and showcase the intellectual output of staff and students of the University of Melbourne for a global audience.
View Item 
  • Minerva Access
  • Science
  • School of Physics
  • School of Physics - Research Publications
  • View Item
  • Minerva Access
  • Science
  • School of Physics
  • School of Physics - Research Publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

    Measurement of the W boson polarisation in t(t)over-barevents from pp collisions at root s=8 TeV in the lepton plus jets channel with ATLAS

    Thumbnail
    Download
    Published version (2.485Mb)

    Citations
    Scopus
    Web of Science
    Altmetric
    29
    30
    Author
    Aaboud, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; ...
    Date
    2017-04-11
    Source Title
    European Physical Journal C: Particles and Fields
    Publisher
    SPRINGER
    University of Melbourne Author/s
    Nuti, Francesco; Milesi, Marco; ZANZI, DANIELE; Petersen, Brian; Barberio, Luigia; Kubota, Takashi; Rados, Pere; Taylor, Geoffrey; Urquijo, Phillip; Scutti, Federico; ...
    Affiliation
    School of Physics
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T. ,... Zwalinski, L. (2017). Measurement of the W boson polarisation in t(t)over-barevents from pp collisions at root s=8 TeV in the lepton plus jets channel with ATLAS. EUROPEAN PHYSICAL JOURNAL C, 77 (4), https://doi.org/10.1140/epjc/s10052-017-4819-4.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/255796
    DOI
    10.1140/epjc/s10052-017-4819-4
    Abstract
    This paper presents a measurement of the polarisation of W bosons from [Formula: see text] decays, reconstructed in events with one high-[Formula: see text] lepton and at least four jets. Data from pp collisions at the LHC were collected at [Formula: see text] = 8 TeV and correspond to an integrated luminosity of 20.2 fb[Formula: see text]. The angle [Formula: see text] between the b-quark from the top quark decay and a direct W boson decay product in the W boson rest frame is sensitive to the W boson polarisation. Two different W decay products are used as polarisation analysers: the charged lepton and the down-type quark for the leptonically and hadronically decaying W boson, respectively. The most precise measurement of the W boson polarisation via the distribution of [Formula: see text] is obtained using the leptonic analyser and events in which at least two of the jets are tagged as b-quark jets. The fitted fractions of longitudinal, left- and right-handed polarisation states are [Formula: see text], [Formula: see text] and [Formula: see text], and are the most precisely measured W boson polarisation fractions to date. Limits on anomalous couplings of the Wtb vertex are set.

    Export Reference in RIS Format     

    Endnote

    • Click on "Export Reference in RIS Format" and choose "open with... Endnote".

    Refworks

    • Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References


    Collections
    • Minerva Elements Records [45770]
    • School of Physics - Research Publications [937]
    Minerva AccessDepositing Your Work (for University of Melbourne Staff and Students)NewsFAQs

    BrowseCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
    My AccountLoginRegister
    StatisticsMost Popular ItemsStatistics by CountryMost Popular Authors