Quantum tomography of diboson spin density matrices yields superior sensitivity to CP-even and CP-odd SMEFT contributions, including quadratic new-physics terms not captured by traditional angular observables.
Aadet al.(ATLAS), Phys
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High-energy amplitude ratios for longitudinal di-boson production approach unity in the SM and dimension-6 SMEFT but not necessarily in HEFT, making the W±_L Z_L to W±_L h cross section ratio a promising discriminator between linear and non-linear electroweak symmetry at the HL-LHC.
Forward muon detection at muon colliders enables Higgs property measurements, invisible new physics searches via Higgs portal, and characterization of vector boson scattering through angular correlations.
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Odd Physics Off the Diagonal: Constraining CP-violating SMEFT with Quantum Tomography
Quantum tomography of diboson spin density matrices yields superior sensitivity to CP-even and CP-odd SMEFT contributions, including quadratic new-physics terms not captured by traditional angular observables.
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Electroweak Restoration: SMEFT and HEFT
High-energy amplitude ratios for longitudinal di-boson production approach unity in the SM and dimension-6 SMEFT but not necessarily in HEFT, making the W±_L Z_L to W±_L h cross section ratio a promising discriminator between linear and non-linear electroweak symmetry at the HL-LHC.
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Why detect forward muons at a muon collider
Forward muon detection at muon colliders enables Higgs property measurements, invisible new physics searches via Higgs portal, and characterization of vector boson scattering through angular correlations.