New results on B→π,K,η decay form factors from light-cone sum rules

By P. Ball, R. Zwicky. 2004

484 citations recorded by the source corpus.

We present an improved calculation of $B\ensuremath{\rightarrow}$ light pseudoscalar form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading-order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is 10 to 13% and can be improved, at least in part, by reducing the uncertainty of hadronic input parameters, in particular, those describing the twist-2 distribution amplitudes of the $\ensuremath{\pi}$, $K$, and $\ensuremath{\eta}$. We present our results in a way which details the dependence of the form factors on these parameters and facilitates the incorporation of future updates of their values from, e.g., lattice calculations.

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Citations in the corpus

On the impact of power corrections in the prediction of B → K*μ+μ− observables (2014, background): “give both results based on form-factor input from [25] (KMPW) and [44] (BZ).”
STUDIES OF NUCLEON RESONANCE STRUCTURE IN EXCLUSIVE MESON ELECTROPRODUCTION (2012, background): “Phys B147, 385–447 (1979) [200] Patricia Ball and Roman Zwicky, “New results on B → π,K, η decay formfactors from light-cone sum rules,” Phys.”
B →Vℓ+ℓ− in the Standard Model from light-cone sum rules (2015, background): “[19] for the definition) varies smoothly from 0.”
On the anomalies in the latest LHCb data (2016, methodology): “• For the B → K form factors we have used the combined fit results of LCSR calculations [86, 87] and lattice computations [88] given in Ref.”