Speaker
Ms
Vanessa Koch
(Trinity College Dublin)
Description
The static potential V(r) between a static quark and a static antiquark separated by
a distance r is defined as the energy of the ground state of this system. As a consequence of confinement, the energy between the quark-antiquark pair is contained inside a color flux tube, the so called string. As soon as the energy is high enough, the gluonic string connecting the quarks will break due to pair creation.
String breaking is manifested as a quantum-mechanical mixing phenomenon between different
states, which contain two infinitely heavy quarks acting as static color sources.
We investigate this phenomenon with $N_f = 2+1$ flavors of dynamical Wilson fermions
in the stochastic LapH framework, using an ensemble of gauge configurations generated
through the CLS effort. We see the effect of the third sea-quark flavor, which results
in a second mixing-phenomenon due to the formation of a strange-antistrange pair.
Primary author
Ms
Vanessa Koch
(Trinity College Dublin)
Co-authors
Dr
Ben Hörz
(Helmholtz-Institut Mainz, Johannes Gutenberg-Universität)
Prof.
Colin Morningstar
(Carnegie Mellon University)
Prof.
Francesco Knechtli
(Dept. of Physics, University of Wuppertal)
Dr
Graham Moir
(Dept. of Applied Mathematics and Theoretical Physics, University of Cambridge)
Prof.
John Bulava
(Dept. of Mathematics and Computer Science and CP3-Origins, University of Southern Denmark)
Prof.
Mike Peardon
(Trinity College Dublin)