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Donnellan, Michael; Sommer, Rainer; Knechtli, Francesco; Leder, Bjoern
Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); ALPHA Collaboration2010
Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); ALPHA Collaboration2010
AbstractAbstract
[en] We present in detail a technique to extract the potential between a static quark and anti-quark pair from Wilson loops measured on dynamical configurations. This technique is based on HYP smearing and leads to an exponential improvement of the noise-to-signal ratio of Wilson loops. We explain why the correct continuum potential is obtained and show numerical evidence that the cut-off effects are small. We present precise results for the non-perturbative potential. As applications, we determine the scale r0/a and study the shape of the static potential in the range of distances around r0, where it can be compared with phenomenological potential models. (orig.)
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Dec 2010; 26 p; SFB-CPP--10-90; WUB--10-24; BUW-SC--2010-5; ISSN 0418-9833; 

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