Published 1990 | Version v1
Report Metadata-only

To the problem of KL → π0γγ decay

Creators

  • 1. Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Theoretical Physics

Description

It is shown that the contribution of intermediate vector mesons to the KL → π0γγ amplitude, intensively discussed in literature in recent years, is close to zero provided that the group SU(3) breaking is taken into account. At the same time, the contribution of intermediate scalar mesons is essential. The obtained estimates for Br(KL → π0γγ) conform with the recent experimental data Br(KL → π0γγ)=(2.1 ± 0.6)x10-6. 23 refs.; 2 figs

Additional details

Additional titles

Original title (no language)
Kratkie soobshcheniya OIYaI.

Publishing Information

Imprint Title
JINR rapid communications
Imprint Pagination
69 p.
Journal Page Range
p. 26-34.
Report number
JINR--6-45-90

INIS

Country of Publication
USSR
Country of Input or Organization
USSR
INIS RN
23006044
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BRANCHING RATIO; DECAY AMPLITUDES; FEYNMAN DIAGRAM; KAONS NEUTRAL LONG-LIVED; PARTICLE WIDTHS; RADIATIVE DECAY; SCALAR MESONS; SU-3 GROUPS; SYMMETRY BREAKING; VECTOR MESONS
Descriptors DEC
AMPLITUDES; BOSONS; DECAY; DIAGRAMS; ELEMENTARY PARTICLES; HADRONS; INFORMATION; KAONS; KAONS NEUTRAL; LIE GROUPS; MESONS; PARTICLE DECAY; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES; SU GROUPS; SYMMETRY GROUPS; TRANSITION AMPLITUDES

Optional Information

Notes
Imprint:Kratkie soobshcheniya OIYaI.;Sbornik.