Published August 2009 | Version v1
Journal article Metadata-only

The cusp effect in η'→ηππ decays

Creators

  • 1. Universitaet Bonn, Helmholtz-Institut fuer Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Bonn (Germany)

Description

Strong final-state interactions create a pronounced cusp in η'→ηπ0π0 decays. We adapt and generalize the non-relativistic effective field theory framework developed for the extraction of ππ scattering lengths from K→3π decays to this case. The cusp effect is predicted to have an effect of more than 8% on the decay spectrum below the π+π- threshold. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s10052-009-1054-7

Additional details

Identifiers

DOI
10.1140/epjc/s10052-009-1054-7;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
62
Journal Issue
3
Journal Page Range
p. 511-523
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
40090088
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
DALITZ PLOT; DECAY AMPLITUDES; ETA PRIME-958 MESONS; FEYNMAN DIAGRAM; FINAL-STATE INTERACTIONS; FLAVOR MODEL; HADRONIC PARTICLE DECAY; LAGRANGIAN FIELD THEORY; PARTICLE WIDTHS; PHASE SPACE; PION-PION INTERACTIONS; RADIATIVE CORRECTIONS; SPECTRA
Descriptors DEC
AMPLITUDES; BOSONS; COMPOSITE MODELS; CORRECTIONS; DECAY; DIAGRAMS; ELEMENTARY PARTICLES; FIELD THEORIES; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; MATHEMATICAL MODELS; MATHEMATICAL SPACE; MESON-MESON INTERACTIONS; MESONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; SCATTERPLOTS; SPACE; TRANSITION AMPLITUDES