Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector [Elektronisk resurs]

• 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. 

Ämnesord

Natural Sciences  (hsv)

Physical Sciences  (hsv)

Subatomic Physics  (hsv)

Naturvetenskap  (hsv)

Fysik  (hsv)

Subatomär fysik  (hsv)

Genre

government publication  (marcgt)

Indexterm och SAB-rubrik

Hadron-Hadron scattering (experiments)