Effects of heavy subdominantly coupled neutrino mixing on l/sup +/ polarization in K/sub L//sup 0/. --> pi. /sup -/l/sup +/. nu. /sub l/ decays

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.35.227· OSTI ID:6812398

Singh, S; Sharma, N K

The effects of heavy subdominantly coupled (HSC) neutrino mixing, without and with the inclusion of right-handed currents (RHC's), on l/sup +/ polarization in K/sub l//sub 3//sup 0/ decays are investigated. The changes in average polarization components due to the HSC neutrino mass (less than or equal to 125 MeV) and the RHC factor (less than or equal to 0.2) are less than one percent for ..mu../sup +/ and about 0.01% for e/sup +/. A large uncertainty in the experimental value of xi renders it difficult to discern HSC neutrino mixing effects or RHC contributions in ..mu../sup +/ polarization measurements. Electron polarization, if measured, could be decisive in ascertaining the RHC admixture even if a few percent of HSC neutrino mixing is present.

• Research Organization: Department of Physics, University of Rajasthan, Jaipur-302 004, India
• OSTI ID: 6812398
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:1; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BOSONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FORM FACTORS
GAUGE INVARIANCE
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS NEUTRAL
KAONS NEUTRAL LONG-LIVED
KOBAYASHI-MASKAWA MATRIX
LEPTONS
LIE GROUPS
MASS
MASSLESS PARTICLES
MATRICES
MATRIX ELEMENTS
MESONS
MUONS
MUONS PLUS
NEUTRINOS
PARTICLE DECAY
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PIONS MINUS
POLARIZED PRODUCTS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
T INVARIANCE
U GROUPS
U-1 GROUPS
UNIFIED-FIELD THEORIES