129 Result(s)
within
**n-long Ma
Astronomy, Astrophysics and Cosmology
Nuclear Energy
Nuclear Physics, Heavy Ions, Hadrons
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Article
Open AccessPerformance of the reconstruction of large impact parameter tracks in the inner detector of ATLAS
Searches for long-lived particles (LLPs) are among the most promising avenues for discovering physics beyond the Standard Model at the Large Hadron Collider (LHC). However, displaced signatures are notoriously...
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Article
Open AccessTowards a muon collider
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV ...
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Open AccessMeasurements of differential cross sections of Higgs boson production through gluon fusion in the \(H\rightarrow WW^{*}\rightarrow e\nu \mu \nu \) final state at \(\sqrt{s} = 13\) TeV with the ATLAS detector
Higgs boson production via gluon–gluon fusion is measured in the \(WW^{*} \rightarrow e\nu \mu \nu \) ...
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Open AccessConstraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV pp collision data with two top quarks and missing transverse momentum in the final state
This paper presents a statistical combination of searches targeting final states with two top quarks and invisible particles, characterised by the presence of zero, one or two leptons, at least one jet origina...
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Open AccessObservation of four-top-quark production in the multilepton final state with the ATLAS detector
This paper presents the observation of four-top-quark ( \(t\bar{t}t\bar{t}\) t ...
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Open AccessMeasurement of the energy asymmetry in \(t{\bar{t}}j\) production at \(13\,\) TeV with the ATLAS experiment and interpretation in the SMEFT framework
A measurement of the energy asymmetry in jet-associated top-quark pair production is presented using \(139\,{\mathrm {fb}}^{-1}\) ...
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Open AccessSearch for dark matter produced in association with a single top quark in \(\sqrt{s}=13\) TeV \(pp\) collisions with the ATLAS detector
This paper presents a search for dark matter in the context of a two-Higgs-doublet model together with an additional pseudoscalar mediator, a, which decays into the dark-matter particles. Processes where the pseu...
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Open AccessMeasurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at \(\sqrt{s} = 13\) TeV with the ATLAS detector
Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson ( $$t...
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Open AccessSearch for heavy resonances decaying into a pair of Z bosons in the \(\ell ^+\ell ^-\ell '^+\ell '^-\) and \(\ell ^+\ell ^-\nu {{\bar{\nu }}}\) final states using 139 \(\mathrm {fb}^{-1}\) of proton–proton collisions at \(\sqrt{s} = 13\,\) TeV with the ATLAS detector
A search for heavy resonances decaying into a pair of Z bosons leading to \(\ell ^+\ell ^-\ell '^+\ell '^-\) ...
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Open AccessMeasurements of WH and ZH production in the \(H \rightarrow b\bar{b}\) decay channel in pp collisions at \(13\,\text {Te}\text {V}\) with the ATLAS detector
Measurements of the Standard Model Higgs boson decaying into a \(b\bar{b}\) b ...
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Open AccessDetermination of jet calibration and energy resolution in proton–proton collisions at \(\sqrt{s} = 8~\hbox {TeV}\) using the ATLAS detector
The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton–proton data produced at a centre-of-mass energy ...
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Article
Open AccessHiggs boson production cross-section measurements and their EFT interpretation in the \(4\ell \) decay channel at \(\sqrt{s}=\) 13 TeV with the ATLAS detector
Higgs boson properties are studied in the four-lepton decay channel (where lepton = e, \(\mu \) μ ...
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Article
Open AccessMeasurements of top-quark pair spin correlations in the \(e\mu \) channel at \(\sqrt{s} = 13\) TeV using pp collisions in the ATLAS detector
A measurement of observables sensitive to spin correlations in \(t\bar{t}\)tt¯ production is presented, using 36.1 \(\hbox {fb}^{-1}\)fb-1 of pp collision data at \(\sqrt{s} = 13\)s=13 TeV recorded with the ATLAS...
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Open AccessMeasurement of \(\hbox {t}{\bar{\hbox {t}}}\) normalised multi-differential cross sections in \({\text {p}}{\text {p}} \) collisions at \(\sqrt{s}=13\,{\text {TeV}} \), and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions
Normalised multi-differential cross sections for top quark pair (\(\hbox {t}{\bar{\hbox {t}}}\)tt¯) production are measured in proton-proton collisions at a centre-of-mass energy of 13\(\,{\text {TeV}}\)TeV using...
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Article
Open AccessA multi-dimensional search for new heavy resonances decaying to boosted \(\text{ W }{}{}\) \(\text{ W }{}{}\) , \(\text{ W }{}{}\) \(\text{ Z }{}{}\) , or \(\text{ Z }{}{}\) \(\text{ Z }{}{}\) boson pairs in the dijet final state at 13 \(\text {Te}\text {V}\)
A search in an all-jet final state for new massive resonances decaying to \(\text{ W }{}{}\)W \(\text{ W }{}{}\)W, \(\text{ W }{}{}\)W \(\text{ Z }{}{}\)Z, or \(\text{ Z }{}{}\)Z \(\text{ Z }{}{}\)Z boson pairs u...
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Article
Open AccessSearch for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at \(\sqrt{s}=13\) \(\,\text {TeV}\)
The standard model (SM) production of four top quarks (\(\text {t} {}{\overline{\text {t}}} \text {t} {}{\overline{\text {t}}} \)tt¯tt¯) in proton–proton collisions is studied by the CMS Collaboration. The data s...
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Open AccessPerformance of electron and photon triggers in ATLAS during LHC Run 2
Electron and photon triggers covering transverse energies from 5 \(\text {GeV }\)GeV to several \(\text {TeV }\)TeV are essential for the ATLAS experiment to record signals for a wide variety of physics: from Sta...
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Open AccessEvidence for \(\text {W}\text {W}\) production from double-parton interactions in proton–proton collisions at \(\sqrt{s} = 13 \,\text {TeV} \)
A search for \(\text {W}\text {W}\)WW production from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-...
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Open AccessSearches for physics beyond the standard model with the \(M_{\mathrm {T2}}\) variable in hadronic final states with and without disappearing tracks in proton–proton collisions at \(\sqrt{s}=13\,\text {Te}\text {V} \)
Two related searches for phenomena beyond the standard model (BSM) are performed using events with hadronic jets and significant transverse momentum imbalance. The results are based on a sample of proton–proto...
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Open AccessExtraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements
New sets of CMS underlying-event parameters (“tunes”) are presented for the pythia8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or ne...
