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Determination of the Relative Sign of the Higgs Boson Couplings to W and Z Bosons Using WH Production via Vector-Boson Fusion with the ATLAS Detector.
Phys Rev Lett
October 2024
CERN, Geneva, Switzerland.
Article Synopsis
- The study investigates the associated production of Higgs and W bosons, focusing on how the relative signs of the Higgs couplings to W and Z bosons impact the process.
- Two specific searches were conducted using large amounts of collision data from the LHC to analyze different coupling scenarios: one for opposite-sign couplings and another for same-sign (standard model-like) couplings.
- The results significantly exclude the opposite-sign coupling hypothesis and set a strict upper limit on the production rate of this process compared to standard model predictions.
Study of High-Transverse-Momentum Higgs Boson Production in Association with a Vector Boson in the qqbb Final State with the ATLAS Detector.
Phys Rev Lett
March 2024
CERN, Geneva, Switzerland.
This Letter presents the first study of Higgs boson production in association with a vector boson (V=W or Z) in the fully hadronic qqbb final state using data recorded by the ATLAS detector at the LHC in proton-proton collisions at sqrt[s]=13 TeV and corresponding to an integrated luminosity of 137 fb^{-1}. The vector bosons and Higgs bosons are each reconstructed as large-radius jets and tagged using jet substructure techniques. Dedicated tagging algorithms exploiting b-tagging properties are used to identify jets consistent with Higgs bosons decaying into bb[over ¯].
View Article and Find Full Text PDFObservation of WZγ Production in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.
Phys Rev Lett
January 2024
CERN, Geneva, Switzerland.
This Letter reports the observation of WZγ production and a measurement of its cross section using 140.1±1.2 fb^{-1} of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider.
View Article and Find Full Text PDFCurrent landscape in cardiology training, unmet needs, and attitudes on career development among cardiology trainees and young cardiologists in Greece: An HCS young cardiologists WG survey.
Hellenic J Cardiol
July 2024
6(th) Cardiology Department, Hygeia Hospital, Athens, Greece.
Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector.
Phys Rev Lett
November 2023
CERN, Geneva, Switzerland.
This Letter reports the observation of single top quarks produced together with a photon, which directly probes the electroweak coupling of the top quark. The analysis uses 139 fb^{-1} of 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. Requiring a photon with transverse momentum larger than 20 GeV and within the detector acceptance, the fiducial cross section is measured to be 688±23(stat) _{-71}^{+75}(syst) fb, to be compared with the standard model prediction of 515_{-42}^{+36} fb at next-to-leading order in QCD.
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