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Detecting the relativistic galaxy bispectrum
(IOP Publishing, 2020-03)
The Fourier galaxy bispectrum is complex, with the imaginary part arising from leading-order relativistic corrections, due to Doppler, gravitational redshift and related line-of-sight effects in redshift space. The detection ...
Multi-scale perturbation theory. Part I. Methodology and leading-order bispectrum corrections in the matter-dominated era
(IOP Publishing, 2020-03)
Two-parameter perturbation theory is a scheme tailor-made to consistently include nonlinear density contrasts on small scales (<100 Mpc), whilst retaining a traditional approach to cosmological perturbations in the ...
Constraining the masses of planets in protoplanetary discs from the presence or absence of vortices - comparison with ALMA observations
(Published by Oxford University Press on behalf of the Royal Astronomical Society, 2020-02)
A massive planet in a protoplanetary disc will open a gap in the disc material. A steep gap edge can be hydrodynamically unstable, which results in the formation of vortices that can act as tracers for the presence of ...
A tale of two exponentiations in N = 8 supergravity at subleading level
(Springer, 2020-03-01)
High-energy massless gravitational scattering in N = 8 supergravity was recently analyzed at leading level in the deflection angle, uncovering an interesting connection between exponentiation of infrared divergences in ...
Neutron scattering study of the orientational disorder and phase transitions in barium carbonate.
(IOP Publishing, 2020-04-24)
Orientational disorder of the molecular carbonate anions in BaCO3, which occurs naturally as the mineral witherite, has been studied using a combination of neutron total scattering analysed by the Reverse Monte Carlo method ...
Recursion relations for gravitational lensing
(Springer Science and Business Media LLC, 2020-03)
The weak gravitational lensing formalism can be extended to the strong lensing regime by integrating a nonlinear version of the geodesic deviation equation. The resulting ‘roulette’ expansion generalises the notion of ...
Search for long-lived neutral particles produced in pp collisions at root s=13 TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer
(American Physical Society, 2020-03-30)
A search is presented for pair production of long-lived neutral particles using
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proton–proton collision data, collected during 2016 by the ATLAS detector at the LHC. This ...
Evidence for electroweak production of two jets in association with a Z gamma pair in pp collisions at root S=13 TeV with the ATLAS detector
(Elsevier, 2020-04-10)
Evidence for electroweak production of two jets in association with a Zγ pair in
proton–proton collisions at the Large Hadron Collider is presented. The analysis uses data collected by the ATLAS detector in 2015 and ...
Z boson production in Pb plus Pb collisions at root S-NN=5.02 TeV measured by the ATLAS experiment
(Elsevier, 2020-03-10)
The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at
TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49
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Measurement of soft-drop jet observables in pp collisions with the ATLAS detector at root s=13 TeV
(American Physical Society, 2020-03-17)
Jet substructure quantities are measured using jets groomed with the soft-drop grooming procedure in dijet events from
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