Published May 23, 2003 | Version v1
Journal article Metadata-only

Search for time-reversal violation in the β decay of polarized Li8 nuclei

Creators

  • 1. University of Wisconsin, Madison, Wisconsin 53706 (United States)
  • 2. Instytut Fizyki, Uniwersytet Slaski, PL-40007 Katowice (Poland)
  • 3. Laboratoire de Physique Corpusculaire de Caen, ISMRA-IN2P3, 14050 Caen (France)
  • 4. Instytut Fizyki, Uniwersytet Jagiellonski, PL-30059 Cracow (Poland)
  • 5. Institut fuer Teilchenphysik, Eidgenoessische Technische Hochschule, CH-8093 Zurich (Switzerland)

Description

The transverse polarization of electrons emitted in the β decay of polarized Li8 nuclei has been measured. For the time-reversal violating triple correlation parameter we find R=(0.9±2.2)x10-3. This result is in agreement with the standard model and yields improved constraints on exotic tensor contributions to the weak interaction. Combined with other experimental results and using a model for the coupling constants, a new limit for the mass of a possible scalar leptoquark, mLQ>560 GeV/c2 (90% C.L.), is obtained

Additional details

Identifiers

DOI
10.1103/PhysRevLett.90.202301;
arXiv
arXiv:nucl-ex/0301010v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
90
Journal Issue
20
Journal Page Range
p. 202301-202301.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35043953
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BETA DECAY; COUPLING CONSTANTS; CP INVARIANCE; ELECTRON BEAMS; LITHIUM 8; MASS; NUCLEAR REACTIONS; POLARIZATION; POLARIZED BEAMS; STANDARD MODEL; T INVARIANCE; WEAK INTERACTIONS
Descriptors DEC
BASIC INTERACTIONS; BEAMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DECAY; FIELD THEORIES; GRAND UNIFIED THEORY; INTERACTIONS; INVARIANCE PRINCIPLES; ISOTOPES; LEPTON BEAMS; LIGHT NUCLEI; LITHIUM ISOTOPES; MATHEMATICAL MODELS; MILLISECONDS LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEI; ODD-ODD NUCLEI; PARTICLE BEAMS; PARTICLE MODELS; QUANTUM FIELD THEORY; RADIOISOTOPES; UNIFIED GAUGE MODELS

Optional Information

Notes
(c) 2003 The American Physical Society