TY - JOUR

T1 - Kπ scattering and the K*(892) resonance in 2+1 flavor QCD

AU - Rendon, Gumaro

AU - Leskovec, Luka

AU - Meinel, Stefan

AU - Negele, John W.

AU - Paul, Srijit

AU - Petschlies, Marcus

AU - Pochinsky, Andrew

AU - Silvi, Giorgio

AU - Syritsyn, Sergey

N1 - Funding Information:
We are grateful to Kostas Orginos and the other members of the William & Mary and JLab lattice QCD groups for providing the lattice gauge ensembles. Computations for this work were carried out in part on facilities of the USQCD Collaboration, which are funded by the Office of Science of the U.S. Department of Energy, and on SuperMUC at Leibniz Supercomputing Centre, which is funded by the Gauss Centre for Supercomputing. SM and GR are supported by the U.S. Department of Energy (DoE), Office of Science, Office of High Energy Physics under Award Number DE-SC0009913. SM and SS also thank the RIKEN BNL Research Center for support. JN was supported in part by the DOE Office of Nuclear Physics under grant DE-SC-0011090. AP was supported in part by the U.S. Department of Energy Office of Nuclear Physics under grant DE-FC02-06ER41444. SP is supported by the Horizon 2020 of the European Commission research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 642069. We also acknowledge the use of the USQCD software QLUA for the calculations of the correlators.
Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons.

PY - 2018

Y1 - 2018

N2 - In this project, we will compute the form factors relevant for B → K∗(→ Kπ)`+`− decays. To map the finite-volume matrix elements computed on the lattice to the infinite-volume B → Kπ matrix elements, the Kπ scattering amplitude needs to be determined using Lüscher’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∗Kπ coupling for two different ensembles with pion masses of 317(2) and 178(2) MeV.

AB - In this project, we will compute the form factors relevant for B → K∗(→ Kπ)`+`− decays. To map the finite-volume matrix elements computed on the lattice to the infinite-volume B → Kπ matrix elements, the Kπ scattering amplitude needs to be determined using Lüscher’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∗Kπ coupling for two different ensembles with pion masses of 317(2) and 178(2) MeV.

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M3 - Conference article

AN - SCOPUS:85069965097

VL - 334

JO - Proceedings of Science

JF - Proceedings of Science

SN - 1824-8039

M1 - 073

T2 - 36th Annual International Symposium on Lattice Field Theory, LATTICE 2018

Y2 - 22 July 2018 through 28 July 2018

ER -