Charm-loop effect in B → K()ℓ+ℓ− and B → Kγ

By A. Khodjamirian, T. Mannel, A. Pivovarov, Yaping Wang. 2010

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Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, background): “At low q(2), the theory input is based on the light-cone Operator Product Expansion (OPE) at very low (or negative) q(2) [858,859], an expansion that breaks down at the perturbative cc̄ threshold q(2) ' 4m(2)c .”
On the impact of power corrections in the prediction of B → K*μ+μ− observables (2014, methodology): “[25] for B → K∗μμ and further work (unfortunately only for B → Kμμ) in ref.”
Model-independent constraints on new physics in b → s transitions (2011, background): “(6)For a recent discussion of uncertainties in the low q(2) region see also [68].”
Patterns of New Physics in b → sℓ+ℓ− transitions in the light of recent data (2017, background): “[40], which has more conservative uncertainties than the ones in Ref.”
B →Vℓ+ℓ− in the Standard Model from light-cone sum rules (2015, background): “Both effects have been assessed in LCSR, the former with a B-meson DA [73] and the latter with K∗-meson DA (for B → K∗γ only) [74,75].”
On B → Vℓℓ at small dilepton invariant mass, power corrections, and new physics (2012, methodology): “We also show the central values of the results obtained from LCSR [46,77], QCDSR [87] and in DSE [88], Our method may over- or underestimate the power corrections.”