24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Near threshold states $D_{s0}^{*}\left(2317\right)$ and $D_{s1}\left(2460\right)$

28 Jul 2016, 15:40
20m
Building B2a Room 2065 (Highfield Campus, University of Southampton)

Building B2a Room 2065

Highfield Campus, University of Southampton

Talk Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

Speaker

Mr Antonio Cox (University of Regensburg)

Description

Early theoretical studies and lattice simulations predicted the charmed-strange mesons $D_{s0}^{*}(2317)$ and $D_{s1}(2460)$ to be broad states lying above the thresholds, $DK$ and $D^{*}K$, respectively. Experiments found narrow states below threshold. We present 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 with multiple volumes were employed, $Lm_{\pi}=2.5,3.4,4.2$ and $6.7$ at $m_{\pi}=289$ MeV and $Lm_{\pi}=2.8$ and $3.5$ at $m_{\pi}=150$ MeV. The volume dependence of the resulting spectrum is investigated according to Luescher’s formula.

Primary author

Mr Antonio Cox (University of Regensburg)

Presentation Materials

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