[Theory-seminars] Theory Seminar tomorrow (1pm)

[Miguel Albaladejo]

Dear all,

below you can find a reminder on tomorrow's seminar.

Best regards,
Carlota, Raza, and Miguel

Time: Monday June 29, 1pm
Bluejeans connection: https://bluejeans.com/610445877
Speaker: Gumaro Rendon (Brookhaven National Lab)
Title: 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.
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