The topological susceptibility and pion decay constant from lattice QCD

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We study the topological susceptibility, chi, in two flavour lattice QCD. We find clear evidence for the expected suppression of chi at small quark mass. The estimate of the pion decay constant, f_pi = 105 +/-5 +18/-10 MeV, is consistent with the experimental value of approximately 93 MeV. We compare chi to the large-N_c prediction and find consistency over a large range of quark masses.
A condensed hep-ph/0004180 (3 pages) presented at Confinement IV, Vienna, July 2000

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High Energy Physics - Lattice, High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/38502

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-lat/0009008
 http://arxiv.org/abs/hep-lat/0009008

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arXiv