Dominance of long distance effects in the K sub L -K sub S mass difference

Journal Article · Wed Aug 01 00:00:00 EDT 1990 · Modern Physics Letters A; (USA)

DOI:https://doi.org/10.1142/S0217732390001682· OSTI ID:5827271

Terasaki, K ^[1]; Oneda, S ^[2]

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1. Hiroshima Univ., Takehara (Japan). Research Inst. for Theoretical Physics
2. Maryland Univ., College Park, MD (USA). Dept. of Physics

It is argued that the asymptotic behavior of the matrix elements of H{sub w} involving on-mass-shell ground-state mesons with infinite momenta, which were instrumental in explaining the {vert bar}{Delta}{vert bar} = 1/2 rule in the K {r arrow} {pi}{pi} decays, actually implies (K{sup 0}{vert bar}O{sub {Delta}S = 2}{vert bar}{bar K}{sup 0}) = 0. The long distance effects (contributions of PS and vector meson poles and {pi}{pi} intermediate states) may reproduce the observed K{sub L} {minus} K{sub S} mass difference, consistent with the {vert bar}{Delta}I{vert bar} = 1/2 rule. Its estimate is however sensitive to the {eta}-{eta}{prime} mixing.

• OSTI ID: 5827271
• Journal Information: Modern Physics Letters A; (USA), Vol. 5:19; ISSN 0217-7323
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
MATRIX ELEMENTS
ASYMPTOTIC SOLUTIONS
MESONS
GROUND STATES
CONFIGURATION MIXING
KAONS
MASS
PARTICLE DECAY
PIONS
BOSONS
DECAY
ELEMENTARY PARTICLES
ENERGY LEVELS
HADRONS
INTERACTIONS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties
657002 - Theoretical & Mathematical Physics- Classical & Quantum Mechanics
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory