Published December 16, 1985 | Version v1
Journal article Metadata-only

Lattice calculation of weak matrix elements

Creators

  • 1. Argonne National Laboratory, Argonne, Illinois 60439
  • 2. University of California, Irvine, California 92717
  • 3. University of California, Los Angeles, California 90024

Description

We present the first results from a small (63 x 10) lattice of a calculation of nonleptonic weak matrix elements. The ΔI = (1/2) rule is studied as a test case. For a lattice meson of mass approx. =kaon mass we find a significantly enhanced ΔI = (1/2) amplitude and a ΔI = (3/2) amplitude compatible with zero within our statistics. The dominance of the ΔI = (1/2) amplitude appears to be due to a class of graphs called the eye graphs. Qualitatively similar results are found whether or not the charm quark is integrated out ab initio. We also report preliminary results on other weak matrix elements

Additional details

Publishing Information

Journal Title
Phys. Rev. Lett.
Journal Volume
55
Journal Issue
25
Series
Phys. Rev. Lett.
Journal Page Range
2770-2773
ISSN
0031-9007
CODEN
PRLTA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
17038149
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
GREEN FUNCTION; ISOSPIN; KOBAYASHI-MASKAWA MATRIX; MASS; MATRIX ELEMENTS; MESONS; MONTE CARLO METHOD; PERTURBATION THEORY; RENORMALIZATION; SELECTION RULES; WEAK HADRONIC DECAY
Descriptors DEC
BOSONS; DECAY; ELEMENTARY PARTICLES; FUNCTIONS; HADRONS; MATRICES; PARTICLE DECAY; PARTICLE PROPERTIES; WEAK PARTICLE DECAY