Testing m(up)=0 on the Lattice

Details Testing m(up)=0 on the Lattice Testing m(up)=0 on the Lattice

1999-09-10

arxiv.org/abs/hep-lat/9909091v3

JHEP 9911:027,1999

Physics

High Energy Physics

High Energy Physics - Lattice

20 pages, corrected equations, added refs

Scientific paper

10.1088/1126-6708/1999/11/027

A massless up quark is an intriguing solution to the strong CP problem. We discuss how lattice computations can be used in conjunction with chiral perturbation theory to address the consistency of $m_u=0$ with the observed hadron spectrum and interactions. It is not necessary to simulate very light quarks-three flavor partially quenched computations with comparable sea and valence quark masses on the order of the strange quark mass could suffice.

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