I =3/2 K. pi. scattering in the nonrelativistic quark potential model

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.4868· OSTI ID:7002050

Barnes, T ^[1]; Swanson, E S ^[2]; Weinstein, J ^[3]

---

1. Physics Division and Center for Computationally Intensive Physics, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6373 (United States) Department of Physics, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)
2. Center for Theoretical Physics, Laboratory for Nuclear Science Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
3. Department of Physics and Astronomy, University of Mississippi, University, Mississippi 38677 (United States)

We study {ital I}=3/2 elastic {ital K}{pi} scattering to Born order using nonrelativistic quark wave functions in a constituent-exchange model. This channel is ideal for the study of nonresonant meson-meson scattering amplitudes since {ital s}-channel resonances do not contribute significantly. Standard quark model parameters yield good agreement with the measured {ital S}- and {ital P}-wave phase shifts and with partial conservation of axial-vector current calculations of the scattering length. The {ital P}-wave phase shift is especially interesting because it is nonzero solely due to SU(3){sub {ital f}}-symmetry-breaking effects, and is found to be in good agreement with experiment given conventional values for the strange and nonstrange constituent quark masses.

• OSTI ID: 7002050
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:11; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
COMPOSITE MODELS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
FUNCTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HAMILTONIANS
INTERACTIONS
KAONS
LIE GROUPS
MASS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MESON-MESON INTERACTIONS
MESONS
P WAVES
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE MODELS
PCAC THEORY
PHASE SHIFT
PIONS
POTENTIALS
PSEUDOSCALAR MESONS
QUANTUM OPERATORS
QUARK MODEL
S CHANNEL
S WAVES
SCATTERING
SCATTERING AMPLITUDES
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
WAVE FUNCTIONS