[Theory-seminars] Virtual theory seminar

[Carlota Andres Casas]

Dear all,

Here is a reminder of the virtual theory seminar next Monday

Theory seminar
Monday June 29, 1:00 PM
Gumaro Rendon (Brookhaven National Lab), "The κ and K* resonances from lattice QCD"

Abstract
We present a lattice-QCD determination of the elastic isospin-1/2 S-wave and P-wave Kπ scattering amplitudes as a function of the center-of-mass energy using Lüscher’s method. We perform
global fits of K-matrix parametrizations to the finite-volume energy spectra for all irreducible representations with total momenta up to √3*2π/L; this includes irreps that mix the S- and P-waves. Several different parametrizations for the energy dependence of the K-matrix are considered. We also determine the positions of the nearest poles in the scattering amplitudes, which correspond to the broad κ resonance in the S-wave and the narrow K*(892) resonance in the P-wave. Our calculations are performed with 2 + 1 dynamical clover fermions for two different pion masses of 317.2(2.2) and 175.9(1.8) MeV.


Bluejeans connection: https://bluejeans.com/610445877

Raza, Miguel, and Carlota
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