Browsing Department of Physics and Technology by Title
Now showing items 1749-1768 of 2132
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Search for Pair Production of Bottom-Squarks in Final States with Hadronically Decaying Tau-leptons, b-jets and missing transverse momentum with the ATLAS Detector at the Large Hadron Collider
(Doctoral thesis, 2020-10-16)In this thesis a search for beyond the Standard Model physics, in particular for bottom-squark pairs in events with missing transverse momentum, b-tagged jets and hadronically decaying tau leptons is documented. The dataset ... -
Search for pair production of Higgs bosons in the bb¯¯bb¯¯ final state using proton-proton collisions at √s=13 TeV with the ATLAS detector
(Peer reviewed; Journal article, 2019-01-03)A search for Higgs boson pair production in the bb¯¯bb¯¯ final state is carried out with up to 36.1 fb^−1 of LHC proton-proton collision data collected at √s=13 TeV with the ATLAS detector in 2015 and 2016. Three benchmark ... -
Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s=13 TeV pp collisions using the ATLAS detector
(Peer reviewed; Journal article, 2018-11)A search for pair production of the supersymmetric partners of the Higgs boson (higgsinos ˜H) in gauge-mediated scenarios is reported. Each higgsino is assumed to decay to a Higgs boson and a gravitino. Two ... -
Search for pair production of scalar leptoquarks decaying into first- or second-generation leptons and top quarks in proton–proton collisions at √s = 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2021)A search for pair production of scalar leptoquarks, each decaying into either an electron or a muon and a top quark, is presented. This is the first leptoquark search using ATLAS data to investigate top-philic cross-generational ... -
Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton in pp collisions at √s = 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2021)A search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton is presented. The search is based on a dataset of pp collisions at √s = 13 TeV recorded with the ATLAS detector ... -
Search for pair production of up-type vector-like quarks and for four-top-quark events in final states with multiple b-jets with the ATLAS detector
(Peer reviewed; Journal article, 2018-07-12)A search for pair production of up-type vector-like quarks (T ) with a significant branching ratio into a top quark and either a Standard Model Higgs boson or a Z boson is presented. The same analysis is also used to search ... -
Search for pair-produced massive coloured scalars in four-jet final states with the ATLAS detector in proton-proton collisions at \(\sqrt{s}\) = 7 TeV
(Peer reviewed; Journal article, 2013-01)A search for pair-produced massive coloured scalar particles decaying to a four-jet final state is performed by the ATLAS experiment at the LHC in proton-proton collisions at \(\sqrt{s}\) = 7 TeV. The analysed data sample ... -
A search for pair-produced resonances in four-jet final states at √s=13 TeV with the ATLAS detector
(Peer reviewed; Journal article, 2018-03)A search for massive coloured resonances which are pair-produced and decay into two jets is presented. The analysis uses 36.7 fb −1 of s√ = 13 TeV pp collision data recorded by the ATLAS experiment at the LHC in 2015 and ... -
Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in \(pp\) collisions at \(\sqrt{s}=8\) TeV with the ATLAS detector
(Peer reviewed; Journal article, 2014-09)Results of a search for supersymmetry via direct production of third-generation squarks are reported, using \(20.3\) fb\).{-1}\) of proton-proton collision data at \(\sqrt{s}\).8 TeV recorded by the ATLAS experiment at the ... -
Search for pairs of highly collimated photon-jets in pp collisions at √s=13 TeV with the ATLAS detector
(Peer reviewed; Journal article, 2019-01-18)Results of a search for the pair production of photon-jets—collimated groupings of photons—in the ATLAS detector at the Large Hadron Collider are reported. Highly collimated photon-jets can arise from the decay of new, ... -
Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in √s = 13 TeV pp collisions with the ATLAS detector
(Journal article; Peer reviewed, 2020-10)A search for new-physics resonances decaying into a lepton and a jet performed by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at s√ = 13 TeV at the Large Hadron Collider are considered ... -
Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC
(Journal article; Peer reviewed, 2021)A search is presented for new phenomena in events characterised by high jet multiplicity, no leptons (electrons or muons), and four or more jets originating from the fragmentation of b-quarks (b-jets). The search uses 139 ... -
Search for photonic signatures of gauge-mediated supersymmetry in 13 TeV pp collisions with the ATLAS detector
(Peer reviewed; Journal article, 2018-05-22)A search is presented for photonic signatures, motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of proton-proton collision data at √ s = 13 TeV corresponding to an integrated ... -
Search for production of \(WW/WZ\) resonances decaying to a lepton, neutrino and jets in \(pp\) collisions at \(\sqrt{s}\) = 8 TeV with the ATLAS detector
(Peer reviewed; Journal article, 2015-05-12)A search is presented for a narrow diboson resonances decaying to \(WW\) or \(WZ\) in the final state where one \(W\) boson decays leptonically (to an electron or a muon plus a neutrino) and the other \(W/Z\) boson decays ... -
Search for production of vector-like quark pairs and of four top quarks in the lepton-plus-jets final state in \(pp\) collisions at \(\sqrt{s}=8\) TeV with the ATLAS detector
(Peer reviewed; Journal article, 2015-08)A search for pair production of vector-like quarks, both up-type \(T\) and down-type \(B\) , as well as for four-top-quark production, is presented. The search is based on \(pp\) collisions at \(\sqrt{s}=8\) TeV recorded ... -
Search for quantum black hole production in high-invariant-mass lepton + jet final states using pp collisions at √s = 8 TeV and the ATLAS detector
(Peer reviewed; Journal article, 2014-03-05)This Letter presents a search for quantum black-hole production using 20.3 fb⎻¹ of data collected with the ATLAS detector in pp collisions at the LHC at √s=8 TeV. The quantum black holes are assumed to decay into a final ... -
Search for R-parity-violating supersymmetric particles in multi-jet final states produced in p–p collisions at √s = 13 TeV using the ATLAS detector at the LHC
(Peer reviewed; Journal article, 2018-11)Results of a search for gluino pair production with subsequent R-parity-violating decays to quarks are presented. This search uses 36.1 fb−1 of data collected by the ATLAS detector in proton–proton collisions with a ... -
Search for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using √s = 13 TeV proton–proton collision data
(Journal article; Peer reviewed, 2021)A search for R-parity-violating supersymmetry in final states characterized by high jet multiplicity, at least one isolated light lepton and either zero or at least three b-tagged jets is presented. The search uses 139fb−1 ... -
Search for rare or forbidden decays of the D0 meson
(Journal article; Peer reviewed, 2020-02-19)We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D0→h'−h−ℓ'+ℓ+ and D0→h'−h+ℓ'±ℓ∓, where h and h′ represent a K or π meson and ℓ and ℓ′ an electron or ... -
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector
(Peer reviewed; Journal article, 2018-04-10)A search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1 fb^−1 of proton–proton collision data at √s = 13 TeV collected during 2015 and 2016 with the ATLAS detector ...