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2010

The QCD rotator with a light quark mass

Weingart, Manuel

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The low-lying energy excitations of 2-flavour QCD in the chiral limit confined to a small spatial box ($\delta$-regime) are that of an $O(4)$ rotator.

In this work, we calculate the corrections due to the presence of a nonzero quark mass up to NNL order by means of dimensional regularised chiral perturbation theory.
The final result for the energy gap of the system only involves the low-energy constants $F$, $\Lambda_1$, $\Lambda_2$ and $B$.

The QCD rotator with a light quark mass · Around

Built on

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2004
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