1. The B → K⁎ form factors on the lattice.
- Author
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Agadjanov, Andria, Bernard, Véronique, Meißner, Ulf-G., and Rusetsky, Akaki
- Subjects
- *
LATTICE theory , *FACTORS (Algebra) , *RELATIVITY (Physics) , *FIELD theory (Physics) , *FINITE volume method - Abstract
The extraction of the B → K ⁎ transition form factors from lattice data is studied, applying non-relativistic effective field theory in a finite volume. The possible mixing of πK and ηK states is taken into account. The two-channel analogue of the Lellouch–Lüscher formula is reproduced. Due to the resonance nature of the K ⁎ , an equation is derived, which allows to determine the form factors at the pole position in a process-independent manner. The infinitely-narrow width approximation of the results is discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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