Exact relativistic {beta} decay endpoint spectrum

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.045501· OSTI ID:21067840

Masood, S S ^[1]; Nasri, S ^[2]; Schechter, J ^[3]; Tortola, M A ^[4]; Valle, J W. F. ^[5]; Weinheimer, C ^[6]

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1. Department of Physics, 2700 Bay Area Boulevard, University of Houston Clear Lake, Houston, Texas 77058 (United States)
2. Institute for Fundamental Theory, University of Florida, Gainesville, Florida (United States)
3. Department of Physics, Syracuse University, Syracuse, New York 13244-1130 (United States)
4. Departamento de Fisica and CFTP, Instituto Superior Tecnico, Avenida Rovisco Pais 1, P-1049-001 Lisboa (Portugal)
5. AHEP Group, Institut de Fisica Corpuscular-C.S.I.C./Universitat de Valencia, Edificio Institutos de Paterna, Apartado 22085, E-46071 Valencia (Spain)
6. Institut fuer Kernphysik, Westfaelische Wilhelms-Universitaet Muenster, Wilhelm-Klemm-Strasse 9, D-48149 Muenster (Germany)

The exact relativistic form for the {beta} decay endpoint spectrum is derived and presented in a simple factorized form. We show that our exact formula can be well approximated to yield the endpoint form used in the fit method of the KATRIN Collaboration. We also discuss the three-neutrino case and how information from neutrino oscillation experiments may be useful in analyzing future {beta} decay endpoint experiments.

• OSTI ID: 21067840
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevC.76.045501; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BETA SPECTRA
FACTORIZATION
NEUTRINO OSCILLATION
NEUTRINOS
RELATIVISTIC RANGE