Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 84: Gittereichtheorie

T 84.7: Vortrag

Mittwoch, 29. März 2017, 18:15–18:30, VSH 11

Near threshold charmed-strange meson states — •Antonio Cox — Universitätsstraße 31 93053 Regensburg Deutschland

Early theoretical studies and lattice simulations predicted the scalar and axial-vector Ds charmed-strange mesons to be broad states lying above the thresholds, DK and D*K respectively. Experiments found narrow states Ds0*(2317) and Ds1(2460) below threshold. We present lattice results of a high statistics Nf=2 study with a lattice spacing of approximately 0.071 fm, taking explicitly into account the thresholds by including four quark operators. We find a lowering of the meson’s masses relative to the two quark operator results. Two pion masses of 290 and 150 MeV with multiple volumes up to 4.5 fm were employed. The volume dependence of the resulting spectrum is investigated according to Luescher’s formula.

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