Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Measurement of the ratio GAMMA(K/sub L/. --> pi. /sup +/. pi. /sup -/)/GAMMA(K/sub L/. --> pi. l. nu. ) for K/sub L/ with 65 GeV/c laboratory momentum

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ;
We have measured the ratio GAMMA(K/sub L/..--> pi../sup +/..pi../sup -/)/GAMMA(K/sub L/..--> pi..l..nu.. ) to be (3.13 +- 0.14) x 10/sup -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/sup -/ 3, and is consistent with the world average Vertical Bareta/sub +/-Vertical Bar = (2.274 +- 0.022) x 10 /sup -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.
Research Organization:
The Enrico Fermi Institute and the Department of Physics, The University of Chicago, Chicago, Illinois 60637
OSTI ID:
5430092
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 55:6; ISSN PRLTA
Country of Publication:
United States
Language:
English

Similar Records

Search for violation of CP invariance in K/sup 0/. -->. pi. /sup +/. pi. /sup -/. pi. /sup 0/ decays
Journal Article · Wed May 01 00:00:00 EDT 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States) · OSTI ID:6198812
Search for CP violation in K/sup 0/. -->. 3. pi. /sup 0/ decays
Journal Article · Tue Jan 31 23:00:00 EST 1984 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States) · OSTI ID:6235394
Measurement of the branching ratio GAMMA (K/sub L/. -->. pi. /sup +/. pi. /sup -/)/GAMMA (K/sub L/. -->. all)
Journal Article · Sun Jul 31 20:00:00 EDT 1977 · Phys. Rev., D; (United States) · OSTI ID:7289019

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALKALINE EARTH METALS
BARYON REACTIONS
BERYLLIUM
BOSONS
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
CORRECTIONS
CP INVARIANCE
DECAY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS NEUTRAL
KAONS NEUTRAL LONG-LIVED
MESONS
METALS
MONTE CARLO METHOD
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE DECAY
PARTICLE PRODUCTION
PIONS
PROTON REACTIONS
PSEUDOSCALAR MESONS
RADIATIVE CORRECTIONS
STRANGE PARTICLES
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY