ORCID Profile
0000-0001-7611-3616
Current Organisations
Institut de Física d'Altes Energies
,
Academia Sinica
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Publications
Determination of jet calibration and energy resolution in proton–proton collisions at $$\sqrt{s} = 8~\hbox {TeV}$$ using the ATLAS detector
Publisher: Springer Science and Business Media LLC
Date: 12-2020
DOI: 10.1140/EPJC/S10052-020-08477-8
Abstract: The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton–proton data produced at a centre-of-mass energy of 8 TeV with an integrated luminosity of $$20 \\, \\hbox {fb}^{-1}$$ 20 fb - 1 . Jets are reconstructed from clusters of energy depositions in the ATLAS calorimeters using the anti- $$k_t$$ k t algorithm. A jet calibration scheme is applied in multiple steps, each addressing specific effects including mitigation of contributions from additional proton–proton collisions, loss of energy in dead material, calorimeter non-compensation, angular biases and other global jet effects. The final calibration step uses several in situ techniques and corrects for residual effects not captured by the initial calibration. These analyses measure both the jet energy scale and resolution by exploiting the transverse momentum balance in $$\\gamma $$ γ + jet, Z + jet, dijet, and multijet events. A statistical combination of these measurements is performed. In the central detector region, the derived calibration has a precision better than 1% for jets with transverse momentum $$150 \\, \\hbox {GeV} p_{{\\mathrm {T}}} $$ 150 GeV p T 1500 GeV, and the relative energy resolution is $$(8.4\\pm 0.6)\\%$$ ( 8.4 ± 0.6 ) % for $$p_{{\\mathrm {T}}}= 100 \\, \\hbox {GeV}$$ p T = 100 GeV and $$(23\\pm 2)\\%$$ ( 23 ± 2 ) % for $$p_{{\\mathrm {T}}}= 20 \\, \\hbox {GeV}$$ p T = 20 GeV . The calibration scheme for jets with radius parameter $$R=1.0$$ R = 1.0 , for which jets receive a dedicated calibration of the jet mass, is also discussed.
Measurement of lepton differential distributions and the top quark mass in $$t\bar{t}$$
Publisher: Springer Science and Business Media LLC
Date: 11-2017
A search for pair-produced resonances in four-jet final states at $$\sqrt{s}=13$$ s = 13 $$\text {TeV}$$ TeV with the ATLAS detector
Publisher: Springer Science and Business Media LLC
Date: 03-2018
Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
Publisher: Springer Science and Business Media LLC
Date: 05-2017
Measurement of jet pT correlations in Pb + Pb and pp collisions at s<
Publisher: Elsevier BV
Date: 11-2017
Fewer obligate coral-dependent fishes associated with corals covered by coral-killing sponge Terpios hoshinota
Publisher: Springer Science and Business Media LLC
Date: 29-09-2022
Measurement of the production cross section of three isolated photons in pp collisions at
Publisher:
Elsevier BV
Date:
06-2018
Publisher: Elsevier BV
Date: 06-2018
A search for resonances decaying into a Higgs boson and a new particle X in the XH→qqbb final state with the ATLAS detector
Publisher: Elsevier BV
Date: 04-2018
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
Publisher: Elsevier BV
Date: 09-2018
Measurement of longitudinal flow decorrelations in Pb+Pb collisions at $$\sqrt{s_{\text {NN}}}=2.76$$
Publisher: Springer Science and Business Media LLC
Date: 02-2018
Measurement of differential cross-sections of a single top quark produced in association with a W boson at $$\sqrt{s}={13}{\text {
Publisher: Springer Science and Business Media LLC
Date: 03-2018
Measurements of top-quark pair spin correlations in the $$e\mu $$ channel at $$\sqrt{s} = 13$$ TeV using pp collisions in the ATLAS detector
Publisher: Springer Science and Business Media LLC
Date: 08-2020
DOI: 10.1140/EPJC/S10052-020-8181-6
Abstract: A measurement of observables sensitive to spin correlations in $$t\\bar{t}$$ t t ¯ production is presented, using 36.1 $$\\hbox {fb}^{-1}$$ fb - 1 of pp collision data at $$\\sqrt{s} = 13$$ s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. Differential cross-sections are measured in events with exactly one electron and one muon with opposite-sign electric charge as a function of the azimuthal opening angle and the absolute difference in pseudorapidity between the electron and muon candidates in the laboratory frame. The azimuthal opening angle is also measured as a function of the invariant mass of the $$t\\bar{t}$$ t t ¯ system. The measured differential cross-sections are compared to predictions by several NLO Monte Carlo generators and fixed-order calculations. The observed degree of spin correlation is somewhat higher than predicted by the generators used. The data are consistent with the prediction of one of the fixed-order calculations at NLO, but agree less well with higher-order predictions. Using these leptonic observables, a search is performed for pair production of supersymmetric top squarks decaying into Standard Model top quarks and light neutralinos. Top squark masses between 170 and 230 GeV are largely excluded at the 95% confidence level for kinematically allowed values of the neutralino mass.
Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at
Publisher:
Elsevier BV
Date:
08-2018
Publisher: Elsevier BV
Date: 08-2018
Scraping and grazing herbivorous/detritivorous fish display opposite feeding behaviours under different protection regulations
Publisher: Informa UK Limited
Date: 26-11-2021
Measurement of detector-corrected observables sensitive to the anomalous production of events with jets and large missing transverse momentum in $$\varvec{pp}$$ p p collisions at $$\mathbf {\sqrt{s}=1
Publisher: Springer Science and Business Media LLC
Date: 11-2017
Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC
Publisher: Springer Science and Business Media LLC
Date: 14-08-2017
DOI: 10.1038/NPHYS4208
Related Organisations
Lancaster University
Location: United Kingdom of Great Britain and Northern Ireland
Bangor University
Location: United Kingdom of Great Britain and Northern Ireland
Related Funding Activities
No related grants have been discovered for Nathan William Price.