Decays. pi -->. l+. nu. and tau. --> pi. +. nu. /sub tau/ in strong external electromagnetic fields

Journal Article · Fri Mar 01 04:00:00 EST 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5312659

Khalilov, V R; Klimenko, Y I; Pavlova, O S; Klimenko, E Y

The leptonic decay of the ..pi.. meson and the pionic decay of the tau lepton are studied in strong electromagnetic fields of two types: a constant crossed field and the field of an electromagnetic plane wave of arbitrary polarization. Expressions are obtained for the decay probabilities taking into account the nonzero neutrino mass and the various spin orientations of all the particles with spin participating in the reactions. It is shown that the probability for producing a lepton with the ''incorrect'' polarization depends on the neutrino mass, which may be of interest for solving the problem of the determination of the neutrino mass. The inclusion of the effect of the external field and the presence of spin effects give new information on how these decays occur under actual experimental conditions.

• Research Organization: Moscow State University
• OSTI ID: 5312659
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 41:3; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645203 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
CROSSED FIELDS
DECAY
ELECTROMAGNETIC FIELDS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEAVY LEPTONS
INTERACTIONS
LEPTONIC DECAY
LEPTONS
MASS
MASSLESS PARTICLES
MESONS
NEUTRINOS
PARTICLE DECAY
PIONS
POLARIZATION
POSTULATED PARTICLES
PROBABILITY
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
TAU PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY