Published September 22, 1986
| Version v1
Journal article
Unique determination of the form-factor ratio in radiative pion decay
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Description
A new experiment studying radiative pion decay, π+→e+ν/sub e/γ, has been performed with the Crystal Box detector at the Clinton P. Anderson Meson Physics Facility. From a maximum-likelihood analysis of the Dalitz-plot distribution of 2364 coincident and random events, we obtain a unique value for γ, the ratio of the axial-vector to vector weak pion form factors, of 0.25 +- 0.12. The new world average is γ -- 0.39 +- 0.06. .AE
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 57
- Journal Issue
- 12
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 1402-1405
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18011986
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- AXIAL-VECTOR CURRENTS; DALITZ PLOT; ELECTRON NEUTRINOS; FORM FACTORS; MAXIMUM-LIKELIHOOD FIT; NAI DETECTORS; PIONS PLUS; POSITRONS; RADIATIVE DECAY; VECTOR CURRENTS
- Descriptors DEC
- ALGEBRAIC CURRENTS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BOSONS; CURRENTS; DECAY; DIAGRAMS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INFORMATION; LEPTONS; MASSLESS PARTICLES; MATTER; MEASURING INSTRUMENTS; MESONS; NEUTRINOS; NUMERICAL SOLUTION; PARTICLE DECAY; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; RADIATION DETECTORS; SCATTERPLOTS; SCINTILLATION COUNTERS; SOLID SCINTILLATION DETECTORS