217 citations · 496 across the 14 of their papers we have counts for
14 papers
On the spatial distribution of the Large-Scale structure: An Unsupervised search for Parity Violation
Samuel Hewson, Will J. Handley, Christopher G. Lester
We use machine learning methods to search for parity violations in the Large-Scale Structure (LSS) of the Universe, motivated by recent claims of chirality detection using the 4-Po…
Hunting for vampires and other unlikely forms of parity violation at the Large Hadron Collider
Christopher G. Lester, Radha Mastandrea, Daniel Noel +1
Non-Standard-Model parity violation may be occurring in LHC collisions. Any such violation would go unseen, however, as searches are for it are not currently performed. One barrier…
Lorentz and permutation invariants of particles III: constraining non-standard sources of parity violation
Christopher G. Lester, Ward Haddadin, Ben Gripaios
Comparisons of the positive and negative halves of the distributions of parity-odd event variables in particle-physics experimental data can provide sensitivity to sources of non-s…
Lorentz and permutation invariants of particles II
Ben Gripaios, Ward Haddadin, C. G. Lester
Two theorems of Weyl tell us that the algebra of Lorentz- (and parity-) invariant polynomials in the momenta of particles are generated by the dot products and that the redunda…
Biased bootstrap sampling for efficient two-sample testing
Thomas P. S. Gillam, Christopher G. Lester
The so-called 'energy test' is a frequentist technique used in experimental particle physics to decide whether two samples are drawn from the same distribution. Its usage requires…
Critical Doping for the Onset of Fermi-Surface Reconstruction by Charge-Density-Wave Order in the Cuprate Superconductor LaSrCuO
S. Badoux, S. A. A. Afshar, B. Michon +11
The Seebeck coefficient of the cuprate superconductor LaSrCuO (LSCO) was measured in magnetic fields large enough to access the normal state at low temp…
Field tunable spin density wave phases in Sr3Ru2O7
C. Lester, S. Ramos, R. S. Perry +7
The conduction electrons in a metal experience competing interactions with each other and the atomic nuclei. This competition can lead to many types of magnetic order in metals. Fo…
Charge density wave fluctuations in La2-xSrxCuO4 and their competition with superconductivity
T. P. Croft, C. Lester, M. S. Senn +2
We report hard (14 keV) x-ray diffraction measurements on three compositions (x=0.11,0.12,0.13) of the high-temperature superconductor La2-xSrxCuO4. All samples show charge-density…
Polarized neutron scattering studies of magnetic excitations in electron-overdoped superconducting BaFeNiAs
Mengshu Liu, C. Lester, Jiri Kulda +5
We use polarized inelastic neutron scattering to study low-energy spin excitations and their spatial anisotropy in electron-overdoped superconducting BaFeNiAs$_{2…
A polarized neutron diffraction study of the field-induced magnetization in the normal and superconducting states of Ba(Fe1-xCox)2As2 (x=0.65)
C. Lester, Jiun-Haw Chu, J. G. Analytis +3
We use polarised neutron diffraction to study the induced magnetization density of near optimally doped Ba(Fe0.935Co0.065)2As2 (T_C=24 K) as a function of magnetic field (1<H<9 T)…
A Layer Correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test
E. Abat, J. M. Abdallah, T. N. Addy +482
A new method for calibrating the hadron response of a segmented calorimeter is developed and successfully applied to beam test data. It is based on a principal component analysis o…
Dispersive Spin Fluctuations in the near optimally-doped superconductor Ba(Fe1-xCox)2As2 (=0.065)
C. Lester, Jiun-Haw Chu, J. G. Analytis +3
Inelastic neutron scattering is used to probe the collective spin excitations of the near optimally-doped superconductor Ba(Fe1-xCox)2As2 (=0.065). Previous measurements on the…
A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
Karl-Johan Grahn
A new method for calibrating the hadron response of a segmented calorimeter is developed. It is based on a principal component analysis of the calorimeter layer energy deposits, ex…
Alignment of the Pixel and SCT Modules for the 2004 ATLAS Combined Test Beam
A. Ahmad, A. Andreazza, T. Atkinson +126
A small set of final prototypes of the ATLAS Inner Detector silicon tracker (Pixel and SCT) were used to take data during the 2004 Combined Test Beam. Data were collected from runs…