Speaker
Fernando Romero López
(Uni Bern)
Description
We use lattice QCD calculations of the finite-volume spectra of systems of two and three mesons to determine, for the first time, three-particle scattering amplitudes with physical quark masses. Our results are for combinations of $\pi^+$ and $K^+$, at a lattice spacing $a = 0.063 ,\text{fm}$, and in the isospin-symmetric limit. We also obtain accurate results for maximal-isospin two-meson amplitudes, with those for $\pi^+K^+$ and $2K^+$ being the first determinations at the physical point. Results are compared to chiral perturbation theory and to phenomenological fits to experimental data.
| Parallel Session (for talks only) | Hadronic and nuclear spectrum and interactions |
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Authors
Dr
Andrew Hanlon
(Brookhaven National Laboratory)
Ben Hoerz
Colin Morningstar
(Carnegie Mellon University)
Fernando Romero López
(Uni Bern)
Sarah Skinner
Stephen Sharpe
(University of Washington)
Zack Draper
(University of Washington)
Sebastian Dawid
(Indiana University)
