Bibliographic Details
| Title: |
Quark mass dependence of pseudo-scalar masses and coupling constants qq+q Collaboration |
| Authors: |
Farchioni, F.1, Gebert, C.2, Montvay, I.2, Scholz, E.2, Scorzato, L.2 |
| Source: |
Nuclear Physics B Proceedings Supplement. Mar2004, Vol. 129-130 Issue 1-3, p179. 3p. |
| Subjects: |
Particles (Nuclear physics), Perturbation theory, Nuclear physics, Mathematical physics |
| Abstract: |
The dependence of pseudo-scalar masses and decay constants on the sea and valence quark masses is investigated in the pseudo- Goldstone boson sector of QCD with two light quark flavours. The sea quark masses are at present in the range SHAPE="CASE" ALIGN="C" STYLE="S">13ms ≤ mud ≤ SHAPE="CASE" ALIGN="C" STYLE="S">23ms whereas the valence quark masses satisfy SHAPE="CASE" ALIGN="C" STYLE="S">12msea ≤ mval ≤ 2msea. The values of the Gasser-Leutwyler low energy constants L4, L5, L6 and L8 are estimated. The computation is done with the Wilson-quark lattice action at gauge coupling β = 5.1 on 164 lattices. O(a) effects are taken into account by applying chiral perturbation theory for the Wilson lattice action as proposed by Rupak and Shoresh. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
