Department of Physics and Technology
Recent Submissions
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Relativistic effects in photoionizing a circular Rydberg state in the optical regime
(Journal article; Peer reviewed, 2020)We study the photoionization process of a hydrogen atom initially prepared in a circular Rydberg state. The atom is exposed to a two-cycle laser pulse with a central wavelength of 800 nm. Before the atom approaches saturation, ... -
Search for new resonances in mass distributions of jet pairs using 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020)A search for new resonances decaying into a pair of jets is reported using the dataset of proton-proton collisions recorded at s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, ... -
Search for displaced vertices of oppositely charged leptons from decays of long-lived particles in pp collisions at √s=13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020)A search for long-lived particles decaying into an oppositely charged lepton pair, μμ, ee, or eμ, is presented using of pp collision data collected at TeV by the ATLAS detector at the LHC. Candidate leptons are required ... -
Multiplicity dependence of inclusive J/ψ production at midrapidity in pp collisions at at √s=13 TeV
(Journal article; Peer reviewed, 2020)Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density in pp collisions at TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity () in the ... -
Measurement of the Z(→ ℓ+ℓ−)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020)The production of a prompt photon in association with a Z boson is studied in proton-proton collisions at a centre-of-mass energy s√ = 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb−1 ... -
Seasonal and hemispheric asymmetries of F‐region polar cap plasma density: Swarm and CHAMP observations
(Journal article; Peer reviewed, 2020)One of the primary mechanisms of loss of Earth's atmosphere is the persistent “cold” ( urn:x-wiley:jgra:media:jgra56068:jgra56068-math-0001 20 eV) ion outflow that has been observed in the magnetospheric lobes over large ... -
J/ψ production as a function of charged-particle multiplicity in p-Pb collisions at √sNN = 8.16 TeV
(Journal article; Peer reviewed, 2020)Inclusive J/ψ yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair sNN−−−√ = 8.16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. ... -
Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at √s = 8 TeV
(Journal article; Peer reviewed, 2020-08)The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at ... -
Search for direct production of electroweakinos in final states with missing transverse momentum and a Higgs boson decaying into photons in pp collisions at √s = 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-10-01)A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. The study is based on the data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to ... -
Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s = 13 TeV
(Journal article; Peer reviewed, 2020-12-07)This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into b-quark pairs, H→aa→(b¯b)(b¯b), using proton-proton collision data collected ... -
Observation and Measurement of Forward Proton Scattering in Association with Lepton Pairs Produced via the Photon Fusion Mechanism at ATLAS
(Journal article; Peer reviewed, 2020-12)The observation of forward proton scattering in association with lepton pairs (e+e−+p or μ+μ−+p) produced via photon fusion is presented. The scattered proton is detected by the ATLAS Forward Proton spectrometer, while the ... -
Higgs boson production cross-section measurements and their EFT interpretation in the 4 ℓ decay channel at √s= 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-10)Higgs boson properties are studied in the four-lepton decay channel (where lepton = e, μ) using 139 fb−1 of proton–proton collision data recorded at s√=13 TeV by the ATLAS experiment at the Large Hadron Collider. The ... -
Search for long-lived, massive particles in events with a displaced vertex and a muon with large impact parameter in pp collisions at √s =13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-08-14)A search for long-lived particles decaying into hadrons and at least one muon is presented. The analysis selects events that pass a muon or missing-transverse-momentum trigger and contain a displaced muon track and a ... -
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 dijet resonances in events with an isolated charged lepton using √s = 13 TeV proton-proton collision data collected by the ATLAS detector
(Journal article; Peer reviewed, 2020-06)A search for dijet resonances in events with at least one isolated charged lepon is performed using 139 fb−1 of s√ = 13 TeV proton-proton collision data recorded by the ATLAS detector at the LHC. The dijet invariant-mass ... -
A search for the Zγ decay mode of the Higgs boson in pp collisions at 1 √s=13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-10-10)A search for the Zγ decay of the Higgs boson, with Z boson decays into pairs of electrons or muons is presented. The analysis uses proton–proton collision data at √s = 13 TeV corresponding to an integrated luminosity of ... -
Measurement of the tt¯ production cross-section in the lepton+jets channel at √s=13 TeV with the ATLAS experiment
(Journal article; Peer reviewed, 2020-11-10)The top anti-top quark production cross-section is measured in the lepton+jets channel using proton– proton collision data at a centre-of-mass energy of √s = 13 TeV collected with the ATLAS detector at the LHC. The dataset ... -
Performance of the ATLAS muon triggers in Run 2
(Journal article; Peer reviewed, 2020-09)The performance of the ATLAS muon trigger system is evaluated with proton-proton (pp) and heavy-ion (HI) collision data collected in Run 2 during 2015–2018 at the Large Hadron Collider. It is primarily evaluated using ... -
On the Production of Ionospheric Irregularities Via Kelvin-Helmholtz Instability Associated with Cusp Flow Channels
(Journal article; Peer reviewed, 2020)We present a multi‐instrument multiscale study of a channel of enhanced, inhomogeneous flow in the cusp ionosphere occurring on November 30, 2014. We provide evidence that strong Global Navigation Satellite System (GNSS) ... -
Dayside Field-Aligned Current Impacts on Ionospheric Irregularities
(Journal article; Peer reviewed, 2020)Global Navigation Satellite Systems (GNSS) are subject to disturbances caused by plasma irregularities in the ionosphere. Studies have suggested that in addition to the gradient drift and Kelvin‐Helmholtz instabilities, ...
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