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Long-distance effects in Bto K^*ellell from Analyticity
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Long-distance effects in Bto K^*ellell from Analyticity
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We discuss a novel approach to systematically determine the long-distance contribution to $B\to K^*\ell\ell$ decays in the kinematic region where the dilepton invariant mass is below the open charm threshold. This approach provides the most consistent and reliable determination to date and can be used to compute Standard Model predictions for all observables of interest, including the kinematic region where the dilepton invariant mass lies between the $J/\psi$ and the $\psi(2S)$ resonances. We illustrate the power of our results by performing a New Physics fit to the Wilson coefficient $C_9$. This approach is systematically improvable from theoretical and experimental sides, and applies to other decay modes of the type $B\to V\ell\ell$, $B\to P\ell\ell$ and $B\to V\gamma$.
Forward citations
Cited by 5 Pith papers
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Probing unknown nonperturbative effects in $b \to s \ell\ell$ with inclusive and exclusive observables
Ratios of exclusive to inclusive b to s lepton lepton observables discriminate between new physics and constant hadronic effects, with current data favoring new physics.
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A Dispersive Look at Rare $B$-meson Semileptonic Decays
A global fit of b→s ℓ+ℓ− and b→s νν data finds that hadronic charm-loop effects, not a new short-distance coupling C9, can explain the observed anomalies.
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A Dispersive Look at Rare $B$-meson Semileptonic Decays
Lattice-only Dispersive Matrix form factors enlarge large-recoil uncertainties and, with new angular data, favour long-distance hadronic effects over a short-distance C9 New Physics shift.
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The Plan B Model: $Z^{\prime}$ collider phenomenology and discovery prospects
Current LHC data exclude a significant portion of the Plan B Model's preferred parameter space, and the HL-LHC could extend sensitivity to Z′ masses around 2.5 TeV.
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Disentangling short- vs. long-distance dynamics in $B\to K^{*}\mu^+\mu^-$
Dispersive resonance modeling of non-local effects in B o K*μ+μ- reduces the C9 anomaly to ≤2σ while yielding precise postdictions for S7,8,9.
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