Rare decayB→Kℓ+ℓ−form factors from lattice QCD
By C. Bouchard, G. Peter Lepage, C. Monahan, H. Na, J. Shigemitsu. 2013
170 citations recorded by the source corpus.
We calculate, for the first time using unquenched lattice QCD, form factors for the rare decay B→Kl+l− in and beyond the Standard Model. Our lattice QCD calculation utilizes a nonrelativistic QCD formulation for the b valence quarks and the highly improved staggered quark formulation for the light valence quarks. We employ the MILC 2+1 asqtad ensembles. The form factor results, based on the z expansion, are valid over the full kinematic range of q2. We construct the ratios f0/f+ and fT/f+, which are useful in constraining new physics and verifying effective theory form factor symmetry relations. We also discuss the calculation of Standard Model observables.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5637158d0bf03c683ad73b3a58a40f3157e246ac
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In Nuclear and High Energy Physics
- Andrzej Buras
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- T. Hurth
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- W. Altmannshofer
Citations in the corpus
- 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.”
- 331 models facing new b → sμ+μ− data (2013, background): “The error on the first SM term is estimated to be 10% [68, 69].”