Published August 5, 1985 | Version v1
Journal article Metadata-only

Measurement of the ratio GAMMA(K/sub L/→π+π-)/GAMMA(K/sub L/→πlν ) for K/sub L/ with 65 GeV/c laboratory momentum

Creators

  • 1. The Enrico Fermi Institute and the Department of Physics, The University of Chicago, Chicago, Illinois 60637

Description

We have measured the ratio GAMMA(K/sub L/→π+π-)/GAMMA(K/sub L/→πlν ) to be (3.13 +- 0.14) x 10-3 for K/sub L/ with a mean laboratory momentum of 65 GeV/c. This value corresponds to the CP-nonconservation parameter Vertical Bareta/sub +/-Vertical Bar = (2.28 +- 0.06) x 10- 3, and is consistent with the world average Vertical Bareta/sub +/-Vertical Bar = (2.274 +- 0.022) x 10 -3 which is derived from measurements with K/sub L/ laboratory momenta less than 10 GeV/c. In this experiment we find no evidence for an energy dependence of Vertical Bareta/sub +/-Vertical Bar

Additional details

Publishing Information

Journal Title
Phys. Rev. Lett.
Journal Volume
55
Journal Issue
6
Series
Phys. Rev. Lett.
Journal Page Range
566-569
ISSN
0031-9007
CODEN
PRLTA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
17008251
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BERYLLIUM; BRANCHING RATIO; CP INVARIANCE; ENERGY DEPENDENCE; GEV RANGE 100-1000; KAONS NEUTRAL LONG-LIVED; MONTE CARLO METHOD; PARTICLE PRODUCTION; PIONS; PROTON REACTIONS; RADIATIVE CORRECTIONS; WEAK HADRONIC DECAY
Descriptors DEC
ALKALINE EARTH METALS; BARYON REACTIONS; BOSONS; CORRECTIONS; DECAY; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; GEV RANGE; HADRON REACTIONS; HADRONS; INVARIANCE PRINCIPLES; KAONS; KAONS NEUTRAL; MESONS; METALS; NUCLEAR REACTIONS; NUCLEON REACTIONS; PARTICLE DECAY; PSEUDOSCALAR MESONS; STRANGE PARTICLES; WEAK PARTICLE DECAY