File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Measurement of the polarisation of Wbosons produced in top-quark decays using dilepton events at √s=13TeV with the ATLAS experiment

TitleMeasurement of the polarisation of Wbosons produced in top-quark decays using dilepton events at √s=13TeV with the ATLAS experiment
Authors
Issue Date10-Aug-2023
PublisherElsevier
Citation
Physics Letters B, 2023, v. 843, p. 1-22 How to Cite?
Abstract

A measurement of the polarisation of Wbosons produced in top-quark decays is presented, using proton-proton collision data at a centre-of-mass energy of v s= 13TeV. The data were collected by the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 139fb(-1). The measurement is performed selecting t tevents decaying into final states with two charged leptons (electrons or muons) and at least two b-tagged jets. The polarisation is extracted from the differential cross-section distribution of the cos theta* variable, where theta(*) is the angle between the momentum direction of the charged lepton from the Wboson decay and the reversed momentum direction of the b-quark from the top-quark decay, both calculated in the Wboson rest frame. Parton-level results, corrected for the detector acceptance and resolution, are presented for the cos theta* angle. The measured fractions of longitudinal, left- and right-handed polarisation states are found to be f(0) = 0.684 +/- 0.005 (stat.)+/- 0.014 (syst.), f(L)= 0.318 +/- 0.003 (stat.)+/- 0.008 (syst.) and f(R)=-0.002 +/- 0.002 (stat.)+/- 0.014 (syst.), in agreement with the Standard Model prediction.


Persistent Identifierhttp://hdl.handle.net/10722/339491
ISSN
2023 Impact Factor: 4.3
2023 SCImago Journal Rankings: 1.593
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAad, G-
dc.contributor.authorAbbott, B-
dc.contributor.authorAbbott, DC-
dc.contributor.authorAbeling, K-
dc.contributor.authorAbidi, SH-
dc.contributor.authorAboulhormae, A-
dc.contributor.authorAbramowicz, H-
dc.contributor.authorAbreu, H-
dc.contributor.authorAbulaiti, Y-
dc.contributor.authorHoffmana, AC-
dc.contributor.authorAcharyaa, BS-
dc.contributor.authorBourdarios, CA-
dc.contributor.authorAdamczyka, L-
dc.contributor.authorAdamek, L-
dc.contributor.authorAddepalli, SV-
dc.contributor.authorAdelman, J-
dc.contributor.authorAdiguzelc, A-
dc.contributor.authorAdorni, S-
dc.contributor.authorAdye, T-
dc.contributor.authorAffolder, AA-
dc.contributor.authorAfik, Y-
dc.contributor.authorAgaras, MN-
dc.contributor.authorAgarwalaa, J-
dc.contributor.authorAggarwal, A-
dc.contributor.authorAgheorghieseic, C-
dc.contributor.authorAguilar-Saavedraf, JA-
dc.contributor.authorAhmad, A-
dc.contributor.authorAhmadov, F-
dc.contributor.authorAhmed, WS-
dc.contributor.authorAhuja, S-
dc.contributor.authorAi, X-
dc.contributor.authorAiellia, G-
dc.contributor.authorTamlihate, MA-
dc.contributor.authorAitbenchikh, B-
dc.contributor.authorAizenberg, I-
dc.contributor.authorAkbiyik, M-
dc.contributor.authorÅesson, TPA-
dc.contributor.authorAkimov, AV-
dc.contributor.authorKhoury, K-
dc.contributor.authorAlberghib, GL-
dc.contributor.authorAlbert, J-
dc.contributor.authorAlbicocco, P-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorAleksa, M-
dc.contributor.authorAleksandrov, IN-
dc.contributor.authorAlexab, C-
dc.contributor.authorAlexopoulos, T-
dc.contributor.authorAlfonsi, A-
dc.contributor.authorAlfonsib, F-
dc.contributor.authorAlhroob, M-
dc.contributor.authorAli, B-
dc.contributor.authorAli, S-
dc.contributor.authorAliev, M-
dc.contributor.authorAlimonti, G-
dc.contributor.authorAlkakhi, W-
dc.contributor.authorAllaire, C-
dc.contributor.authorAllbrooke, BMM-
dc.contributor.authorFlores, CAA-
dc.contributor.authorAllport, PP-
dc.contributor.authorAloisio, A-
dc.contributor.authorAlonso, F-
dc.contributor.authorAlpigiani, C-
dc.contributor.authorEstevez, MA-
dc.contributor.authorFernandez, AA-
dc.contributor.authorAlviggia, MG-
dc.contributor.authorAly, M-
dc.contributor.authorCoutinho, YA-
dc.contributor.authorAmbler, A-
dc.contributor.authorAmelung, C-
dc.contributor.authorAmerl, M-
dc.contributor.authorAmes, CG-
dc.contributor.authorAmidei, D-
dc.contributor.authorDos, Santos SPA-
dc.contributor.authorAmos, KR-
dc.contributor.authorAnaniev, V-
dc.contributor.authorAnastopoulos, C-
dc.contributor.authorAndeen, T-
dc.contributor.authorAnders, JK-
dc.contributor.authorAndrean, SY-
dc.contributor.authorAndreazza, A-
dc.contributor.authorAngelidakis, S-
dc.contributor.authorAngerami, A-
dc.contributor.authorAnisenkov, AV-
dc.contributor.authorAnnovi, A-
dc.contributor.authorAntel, C-
dc.contributor.authorAnthony, MT-
dc.contributor.authorAntipov, E-
dc.contributor.authorAntonelli, M-
dc.contributor.authorAntrim, DJA-
dc.contributor.authorAnulli, F-
dc.contributor.authorAoki, M-
dc.contributor.authorAoki, T-
dc.contributor.authorPozo, AA-
dc.contributor.authorAparo, MA-
dc.contributor.authorBella, LA-
dc.contributor.authorAppelt, C-
dc.contributor.authorAranzabal, N-
dc.contributor.authorFerraza, VA-
dc.contributor.authorArcangeletti, C-
dc.contributor.authorArce, ATH-
dc.contributor.authorArena, E-
dc.contributor.authorArguin, JF-
dc.contributor.authorArgyropoulos, S-
dc.contributor.authorArling, JH-
dc.contributor.authorArmbruster, AJ-
dc.contributor.authorArnaez, O-
dc.contributor.authorArnold, H-
dc.contributor.authorTame, ZPA-
dc.contributor.authorArtoni, G-
dc.contributor.authorAsada, H-
dc.contributor.authorAsai, K-
dc.contributor.authorAsai, S-
dc.contributor.authorAsbah, NA-
dc.contributor.authorAssahsah, J-
dc.contributor.authorAssamagan, K-
dc.contributor.authorAstalos, R-
dc.contributor.authorAtkin, RJ-
dc.contributor.authorAtkinson, M-
dc.contributor.authorAtlay, NB-
dc.contributor.authorAtmani, H-
dc.contributor.authorAtmasiddha, PA-
dc.contributor.authorAugsten, K-
dc.contributor.authorAuricchio, S-
dc.contributor.authorAuriol, AD-
dc.contributor.authorAustrup, VA-
dc.contributor.authorAvner, G-
dc.contributor.authorAvolio, G-
dc.contributor.authorAxiotis, K-
dc.contributor.authorAzuelos, G-
dc.contributor.authorTu, Yanjun-
dc.contributor.authorParedes Hernandez, Daniela Katherinne-
dc.contributor.author-
dc.contributor.authorTAM, Kai Chung-
dc.contributor.authorHUANG, Shuhui-
dc.contributor.authoret al-
dc.date.accessioned2024-03-11T10:37:04Z-
dc.date.available2024-03-11T10:37:04Z-
dc.date.issued2023-08-10-
dc.identifier.citationPhysics Letters B, 2023, v. 843, p. 1-22-
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/10722/339491-
dc.description.abstract<p>A measurement of the polarisation of Wbosons produced in top-quark decays is presented, using proton-proton collision data at a centre-of-mass energy of v s= 13TeV. The data were collected by the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 139fb(-1). The measurement is performed selecting t tevents decaying into final states with two charged leptons (electrons or muons) and at least two b-tagged jets. The polarisation is extracted from the differential cross-section distribution of the cos theta* variable, where theta(*) is the angle between the momentum direction of the charged lepton from the Wboson decay and the reversed momentum direction of the b-quark from the top-quark decay, both calculated in the Wboson rest frame. Parton-level results, corrected for the detector acceptance and resolution, are presented for the cos theta* angle. The measured fractions of longitudinal, left- and right-handed polarisation states are found to be f(0) = 0.684 +/- 0.005 (stat.)+/- 0.014 (syst.), f(L)= 0.318 +/- 0.003 (stat.)+/- 0.008 (syst.) and f(R)=-0.002 +/- 0.002 (stat.)+/- 0.014 (syst.), in agreement with the Standard Model prediction.</p>-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofPhysics Letters B-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMeasurement of the polarisation of Wbosons produced in top-quark decays using dilepton events at √s=13TeV with the ATLAS experiment-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1016/j.physletb.2023.137829-
dc.identifier.scopuseid_2-s2.0-85165885818-
dc.identifier.volume843-
dc.identifier.spage1-
dc.identifier.epage22-
dc.identifier.eissn1873-2445-
dc.identifier.isiWOS:001057197500001-
dc.publisher.placeAMSTERDAM-
dc.identifier.issnl0370-2693-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats