Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detectorVisa övriga samt affilieringar
Antal upphovsmän: 29292019 (Engelska)Ingår i: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, nr 4, artikel-id 048
Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb(-1) of proton-proton collisions at root s = 13 TeV delivered by the Large Hadron Collider. The differential cross-section is measured for events containing two same-flavour opposite-sign lepton pairs. It exhibits a rich structure, with different mass regions dominated in the Standard Model by single Z boson production, Higgs boson production, and Z boson pair production, and non-negligible interference effects at high invariant masses. The measurement is compared with state-of-the-art Standard Model calculations, which are found to be consistent with the data. These calculations are used to interpret the data in terms of gg -> ZZ -> 4l and Z -> 4l subprocesses, and to place constraints on a possible contribution from physics beyond the Standard Model.
Ort, förlag, år, upplaga, sidor
SPRINGER , 2019. nr 4, artikel-id 048
Nyckelord [en]
Hadron-Hadron scattering (experiments)
Nationell ämneskategori
Astronomi, astrofysik och kosmologi
Identifikatorer
URN: urn:nbn:se:kth:diva-251499DOI: 10.1007/JHEP04(2019)048ISI: 000464201100001Scopus ID: 2-s2.0-85064268443OAI: oai:DiVA.org:kth-251499DiVA, id: diva2:1315964
Anmärkning
QC 20190515
2019-05-152019-05-152019-05-15Bibliografiskt granskad