Determination of the parton distribution functions of the proton using diverse ATLAS data from pp collisions at root √s =7, 8 and 13 TeV
European Physical Journal C Springer Nature 82:5 (2022) 438
Abstract:
This paper presents an analysis at next-to-next-to-leading order in the theory of quantum chromodynamics for the determination of a new set of proton parton distribution functions using diverse measurements in pp collisions at √s =7, 8 and 13 TeV, performed by the ATLAS experiment at the Large Hadron Collider, together with deep inelastic scattering data from ep collisions at the HERA collider. The ATLAS data sets considered are differential cross-section measurements of inclusive W± and Z/ γ∗ boson production, W± and Z boson production in association with jets, tt¯ production, inclusive jet production and direct photon production. In the analysis, particular attention is paid to the correlation of systematic uncertainties within and between the various ATLAS data sets and to the impact of model, theoretical and parameterisation uncertainties. The resulting set of parton distribution functions is called ATLASpdf21.Constraints on Higgs boson production with large transverse momentum using
H → b b ¯
decays in the ATLAS detector
Physical Review D American Physical Society (APS) 105:9 (2022) 92003
Search for resonant pair production of Higgs bosons in the bb¯bb¯ final state using pp collisions at s√ = 13 TeV with the ATLAS detector
Physical Review D: Particles, Fields, Gravitation and Cosmology American Physical Society 105 (2022) 092002
Abstract:
A search for resonant Higgs boson pair production in the 𝑏 ¯𝑏𝑏 ¯𝑏 final state is presented. The analysis uses 126–139 fb−1 of 𝑝𝑝 collision data at √𝑠 = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis is divided into two channels, targeting Higgs boson decays which are reconstructed as pairs of small-radius jets or as individual large-radius jets. Spin-0 and spin-2 benchmark signal models are considered, both of which correspond to resonant 𝐻𝐻 production via gluon–gluon fusion. The data are consistent with Standard Model predictions. Upper limits are set on the production cross-section times branching ratio to Higgs boson pairs of a new resonance in the mass range from 251 GeV to 5 TeV.Framework and Tools for the Simulation and Analysis of the Radio Emission from Air Showers at IceCube
(2022)
Search for High-energy Neutrino Emission from Galactic X-Ray Binaries with IceCube
The Astrophysical Journal Letters American Astronomical Society 930:2 (2022) l24