Published August 1992 | Version v1
Report Restricted

A massive neutrino in nuclear beta decay?

Creators

  • 1. Lawrence Berkeley Lab., CA (United States)
  • 2. Sao Paulo Univ., SP (Brazil). Inst. of Physics
  • 3. Tennessee Technological Univ., Cookeville, TN (United States). Dept. of Physics
  • 4. California Univ., Berkeley, CA (United States)

Description

We have continued our studies of the p-spectrum of 14C using a germanium detector doped with 14C. There is a feature in the β-spectrum 17 keV below the endpoint which could be explained by the hypothesis that there is a heavy neutrino emitted in the β-decay of 14C with a mass of 17±1 keV and an emission probability of 1.26±0.25%. However, we also have performed a high statistics measurement of the inner bremsstrahlung spectrum of 55Fe and find no indication of the emission of a 17-keV neutrino. We conclude that the origin of the ''kink'' that has been observed in some recent beta spectral measurements is not a neutrino

Availability note (English)

MF available from INIS under the Report Number; OSTI as DE93004718; NTIS; INIS; US Govt. Printing Office Dep.

Files

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Additional details

Publishing Information

Imprint Pagination
5 p.
Report number
LBL--32953

Conference

Title
26th International Union of Pure and Applied Physics (IUPAP) conference on high energy physics.
Acronym
ICHEP-26
Dates
6-12 Aug 1992.
Place
Dallas, TX (United States).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24036803
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BETA DECAY; BREMSSTRAHLUNG; CARBON 14; ELECTRON CAPTURE; GE SEMICONDUCTOR DETECTORS; IRON 55; NEUTRINO DETECTION; NEUTRINOS; REST MASS
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CAPTURE; CARBON ISOTOPES; DECAY; DETECTION; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; LEPTONS; LIGHT NUCLEI; MASS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; NUCLEAR DECAY; NUCLEI; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; SEMICONDUCTOR DETECTORS; YEARS LIVING RADIOISOTOPES

Optional Information

Contract/Grant/Project number
Contract AC03-76SF00098
Funding organization
USDOE, Washington, DC (United States).
Secondary number(s)
CONF-920837--30.