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The $B\to K^*$ form factors on the lattice
- Publication Year :
- 2016
-
Abstract
- The extraction of the $B\to K^*$ transition form factors from lattice data is studied, applying non-relativistic effective field theory in a finite volume. The possible mixing of $\pi K$ and $\eta K$ states is taken into account. The two-channel analogue of the Lellouch-L\"uscher 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.<br />Comment: 29 pages, 4 figures
- Subjects :
- High Energy Physics - Lattice
High Energy Physics - Phenomenology
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1605.03386
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.nuclphysb.2016.07.005