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Title: | Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector |
Authors: | Álvarez Piqueras, D. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Issue Date: | Apr-2019 |
Publisher: | Institute of Physics Publishing |
Citation: | Journal of High Energy Physics 2019: 48 (2019) |
Abstract: | A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb of proton-proton collisions at 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.[Figure not available: see fulltext.]. |
URI: | http://hdl.handle.net/10261/194699 |
DOI: | 10.1007/JHEP04(2019)048 |
Identifiers: | doi: 10.1007/JHEP04(2019)048 issn: 1029-8479 |
Appears in Collections: | (IFIC) Artículos |
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44_MeasurementOfTheFour-leptonInv(1)_ATLAS.pdf | 1,2 MB | Adobe PDF | ![]() View/Open |
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