Sydney Diekmann

106 Papers

3 Citations

Sydney Diekmann is an academic researcher. The author has contributed to research in topics: Lepton & Higgs boson. The author has an hindex of 1, co-authored 1 publications.

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Papers

Journal Article•10.1088/1748-0221/19/05/p05064

Development of the CMS detector for the CERN LHC Run 3

A. Hayrapetyan, +2411 more

- 01 May 2024

- Journal of Instrumentation

TL;DR: The CMS detector has undergone significant upgrades for Run 3, including a complete replacement of the silicon pixel tracking detector, new powering system for the superconducting solenoid, upgraded electronics for the hadron calorimeter, muon systems, precision proton spectrometer, and luminosity detectors.

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Journal Article•10.1007/jhep07(2023)073

Searches for additional Higgs bosons and for vector leptoquarks in ττ final states in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Armen Tumasyan, +2291 more

- 10 Jul 2023

- Journal of High Energy Physics

Journal Article•10.1103/physrevlett.132.111901

New Structures in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math> Mass Spectrum in Proton-Proton Collisions at <mml:math xmlns

A. Hayrapetyan, +2216 more

- 15 Mar 2024

- Physical Review Letters

TL;DR: A search for near-threshold structures in J/ψJ/ψ invariant mass spectrum in proton-proton collisions at 13 TeV reveals three structures, with a new structure observed at 6638 MeV and another at 6847 MeV consistent with the X(6900) resonance.

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Journal Article•10.1016/j.physletb.2023.138290

Observation of four top quark production in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo linebreak="goodbreak" linebreakstyle="after">=</mml:mo><mml:mn>13</mml:mn><mml:mspac

A. Hayrapetyan, +2328 more

- 01 Oct 2023

- Physics Letters B

TL;DR: The CMS experiment observes four top quark production in proton-proton collisions at 13 TeV with a significance of 5.6σ, measuring a cross section of 17.7±5.3 fb, consistent with standard model predictions.

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Journal Article•10.1103/physrevlett.131.061801

Search for Higgs Boson Decay to a Charm Quark-Antiquark Pair in Proton-Proton Collisions at sqrt[s]=13 TeV.

Armen Tumasyan, +2361 more

- 11 May 2022

- Physical Review Letters

TL;DR: A search for Higgs boson decay to a charm quark-antiquark pair in proton-proton collisions at 13 TeV is presented, employing novel charm jet identification and machine learning techniques, with an observed upper limit on σ(VH)B(H→cc[over ¯]) of 0.94 pb at 95% C.L.

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