Staggered chiral perturbation theory in the two-flavor case

Journal Article · Thu Jul 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.014016· OSTI ID:21410038

Xining, Du ^[1]

---

1. Department of Physics, Washington University, Saint Louis, Missouri (United States)

I study two-flavor staggered chiral perturbation theory in the light pseudoscalar sector. The pion mass and decay constant are calculated through next-to-leading order in the partially-quenched case. In the limit where the strange quark mass is large compared to the light quark masses and the taste splittings, I show that the SU(2) staggered chiral theory emerges from the SU(3) staggered chiral theory, as expected. Explicit relations between SU(2) and SU(3) low energy constants and taste-violating parameters are given. The results are useful for SU(2) chiral fits to asqtad data and allow one to incorporate effects from varying strange quark masses.

• OSTI ID: 21410038
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevD.82.014016; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
COMPUTERIZED SIMULATION
D QUARKS
FLAVOR MODEL
MASS
PARTICLE DECAY
PERTURBATION THEORY
PIONS
PSEUDOSCALAR MESONS
S QUARKS
SU-2 GROUPS
SU-3 GROUPS
U QUARKS
BOSONS
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
LIE GROUPS
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PARTICLE PROPERTIES
QUARK MODEL
QUARKS
SIMULATION
STRANGE PARTICLES
SU GROUPS
SYMMETRY GROUPS