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

Impact of dynamical charm quarks

28 Jul 2016, 14:40
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


Dr Tomasz Korzec (Bergische Universität Wuppertal)


We investigate the influence of dynamical charm quarks on various observables. For observables without explicit charm-quark dependence, decoupling applies and the effects are expected to be small. However, we also study quantities with explicit charm-quark dependence, like the charmonium mass spectrum, where decoupling does not apply. Our study puts an emphasis on careful continuum extrapolations, which require very small lattice spacings when heavy quarks are present in the action. Since our precision goals cannot be currently met in full QCD, we carry our investigations out in a model without light quarks; quenched QCD is compared to QCD with two dynamical heavy quarks.

Primary authors

Dr Björn Leder (Humboldt Universität zu Berlin) Prof. Francesco Knechtli (University of Wuppertal) Dr Graham Moir (University of Cambridge) Salvatore Cali (University Wuppertal) Dr Tomasz Korzec (Bergische Universität Wuppertal)

Presentation Materials

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