Abstract
A search for heavy resonances decaying to a pair of Z bosons is performed using proton–proton collision data produced at √s = 13 TeV and recorded by the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 3.2 fb−1 . Diboson resonant production is expected in several Standard Model extension scenarios. The ZZ decay mode considered corresponds to one Z boson decaying to a pair of charged leptons and the other decaying to a pair of quarks. No evidence for the production of resonances decaying to a ZZ pair is observed. Upper bounds on the production cross sections at √s = 13 TeV times their decay branching ratios to ZZ pairs are derived for a heavy Higgs boson and a spin–2 Randall-Sundrum graviton scenario.
Highlights
This note presents a search for heavy resonances decaying to a pair of Z bosons [1]
The ZZ decay mode considered corresponds to one Z boson decaying to a pair of electrons or muons and the other decaying to a pair of quarks
This case comprises of heavy resonances decaying to Z bosons producing a highly boosted system where the two fermions are emitted within a small opening angle in the laboratory frame
Summary
This note presents a search for heavy resonances decaying to a pair of Z bosons [1]. The ZZ decay mode considered corresponds to one Z boson decaying to a pair of electrons or muons and the other decaying to a pair of quarks. Heavy ZZ resonances are predicted in several extensions of the Standard Model (SM) such as models with extra Higgs bosons [3, 4], the extended gauge model [5] and warped extra-dimension models [6]. The heavy resonances are modeled using a neutral CP–even spin–0 Higgs boson with SM–like couplings, as well as a spin–2 graviton G. The gluon-gluon fusion process, gg→H or G , is used to model the production of both ZZ resonances
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