https://doi.org/10.1140/epja/i2006-10245-y
QNP 2006
Lattice QCD with a twisted mass term and a strange quark
1
Department of Physics, University of Regina, S4S 0A2, Regina, SK, Canada
2
TRIUMF, 4004 Wesbrook Mall, V6T 2A3, Vancouver, BC, Canada
* e-mail: randy.lewis@uregina.ca
Received:
23
November
2006
Accepted:
30
November
2006
Published online:
12
March
2007
There are three quarks with masses at or below the characteristic scale of QCD dynamics: up, down and strange. However, twisted mass lattice QCD relies on quark doublets. Various options for including three quark flavors within the twisted mass approach are explored by studying the kaon masses, both analytically (through chiral Lagrangians) and numerically (through lattice simulations). Advantages and disadvantages are revealed for each “strange and twisted” option.
PACS: 11.15.Ha Lattice gauge theory – / 12.39.Fe Chiral Lagrangians – / 14.40.Aq π, K, and η mesons –
© Società Italiana di Fisica and Springer-Verlag, 2007
