%0 Conference Paper
%A Rendon, Gumaro
%A Leskovec, Luka
%A Meinel, Stefan
%A Negele, John
%A Paul, Srijit
%A Petschlies, Marcus
%A Pochinsky, Andrew
%A Silvi, Giorgio
%A Syritsyn, Sergey
%T $K \pi$ scattering and the $K^*(892)$ resonance in 2+1 flavor QCD
%V LATTICE2018
%C Trieste
%I SISSA
%M FZJ-2018-07095
%B Proceedings of Science
%P 7 p.
%D 2019
%Z 7 pages, 3 figures, Proceedings of the 36th Annual International Symposium on Lattice Field Theory (Lattice 2018), 22-28 July 2018, Michigan State University, East Lansing, Michigan USA
%X In this project, we will compute the form factors relevant for $B \to K^*(\to K \pi)\ell^+\ell^-$ decays. To map the finite-volume matrix elements computed on the lattice to the infinite-volume $B \to K \pi$ matrix elements, the $K \pi$ scattering amplitude needs to be determined using L\'uscher's method. Here we present preliminary results from our calculations with $2+1$ flavors of dynamical clover fermions. We extract the $P$-wave scattering phase shifts and determine the $K^*$ resonance mass and the $K^* K \pi$ coupling for two different ensembles with pion masses of $317(2)$ and $178(2)$ MeV.
%B 36th Annual International Symposium on Lattice Field Theory
%C 22 Jul 2018 - 28 Jul 2018, East Lansing, Michigan (USA)
Y2 22 Jul 2018 - 28 Jul 2018
M2 East Lansing, Michigan, USA
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 Contribution to a conference proceedingsContribution to a book
%U https://juser.fz-juelich.de/record/858189