Consistency constraints on m{sub s} from QCD dispersion relations and chiral perturbation theory in K{sub l3} decays

Journal Article · Wed Oct 01 00:00:00 EDT 1997 · Phys.Lett. B430 (1998) 341-348

OSTI ID:756486

Lebed, Richard F; Schilcher, Karl

The authors use both old and new theoretical developments in QCD dispersion relation constraints on the scalar form factor in the decay K {r_arrow} {pi}l{nu}{sub l} to obtain constraints on the strange quark mass. The perturbative QCD side of the calculation incorporates up to four-loop corrections, while the hadronic side uses a recently developed parameterization constructed explicitly to satisfy the dispersive constraints. Using chiral perturbation theory ({chi}PT) as a model for soon-to-be measured data, they find a series of lower bounds on m{sub s} increasing with the accuracy to which one believes {chi}PT to represent the full QCD result.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 756486
• Report Number(s): DOE/ER/40150-1579; JLAB-THY-97-44; UCSD/PTH-97-28; hep-ph/9710489; TRN: US0003085
• Journal Information: Phys.Lett. B430 (1998) 341-348, Other Information: Submitted to Phys.Lett. B430 (1998) 341-348; PBD: 1 Oct 1997
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
KAONS
SEMILEPTONIC DECAY
QUANTUM CHROMODYNAMICS
DISPERSION RELATIONS
CHIRAL SYMMETRY
PERTURBATION THEORY
PIONS
LEPTONS
NEUTRINOS
LIMITING VALUES
S QUARKS
MASS