Reanalysis of CMS ttγ data shows a 2.7σ localized excess in m_ℓℓγ at 152 GeV compatible with S → W⁺W⁻γ from a narrow scalar, yielding a ratio σ(S → W⁺W⁻γ)/σ(S → W⁺W⁻) = (2.14 ± 0.77)%.
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NLO QCD calculation of pp to ttH with decaying tops, including SMEFT operators O_tφ, O_φG, O_tG, O_tW in production and decays, with studies of linear/quadratic terms and RGE effects at 13.6 TeV.
Analytic expressions for one-loop helicity amplitudes in ttj and ttγ production are derived to O(ε²) as linear combinations of pentagon functions with rational coefficients in momentum-twistor variables, obtained via differential equations solved numerically by generalized power series expansion.
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Radiative Signature of New Scalar Boson Decays in the $m_{\ell \ell \gamma}$ Spectrum at the LHC
Reanalysis of CMS ttγ data shows a 2.7σ localized excess in m_ℓℓγ at 152 GeV compatible with S → W⁺W⁻γ from a narrow scalar, yielding a ratio σ(S → W⁺W⁻γ)/σ(S → W⁺W⁻) = (2.14 ± 0.77)%.
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SMEFT everywhere: a NLO study of $\boldsymbol{pp \to t\bar{t}H}$ with decaying tops
NLO QCD calculation of pp to ttH with decaying tops, including SMEFT operators O_tφ, O_φG, O_tG, O_tW in production and decays, with studies of linear/quadratic terms and RGE effects at 13.6 TeV.
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One-loop amplitudes for $t\bar{t}j$ and $t\bar{t}\gamma$ productions at the LHC through $\mathcal{O}(\epsilon^2)$
Analytic expressions for one-loop helicity amplitudes in ttj and ttγ production are derived to O(ε²) as linear combinations of pentagon functions with rational coefficients in momentum-twistor variables, obtained via differential equations solved numerically by generalized power series expansion.