Published April 18, 2008 | Version v1
Journal article Metadata-only

Measurement of the Proton Asymmetry Parameter in Neutron Beta Decay

Creators

  • 1. Physikalisches Institut der Universitaet Heidelberg, Philosophenweg 12, 69120 Heidelberg (Germany)
  • 2. Institut Laue-Langevin, B.P. 156, 38042 Grenoble Cedex 9 (France)
  • 3. Research Institute for Nuclear and Particle Physics, POB 49, 1525 Budapest (Hungary)
  • 4. IEKP, Universitaet Karlsruhe - TH, Kaiserstrasse 12, 76131 Karlsruhe (Germany)

Description

The proton asymmetry parameter C in neutron decay describes the angular correlation between neutron spin and proton momentum. In this Letter, the first measurement of this quantity is presented. The result C=-0.2377(26) agrees with the standard model expectation. The coefficient C provides an additional parameter for new and improved standard model tests

Additional details

Identifiers

DOI
10.1103/PhysRevLett.100.151801;
arXiv
arXiv:0712.2442v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
100
Journal Issue
15
Journal Page Range
p. 151801-151801.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40006573
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANGULAR CORRELATION; ASYMMETRY; BETA DECAY; NEUTRONS; PROTONS; SPIN; STANDARD MODEL
Descriptors DEC
ANGULAR MOMENTUM; BARYONS; CORRELATIONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; MATHEMATICAL MODELS; NUCLEAR DECAY; NUCLEONS; PARTICLE MODELS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; UNIFIED GAUGE MODELS

Optional Information

Notes
(c) 2008 The American Physical Society