Left-Handed Neutrino Disappearance Probe of Neutrino Mass and Character

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.3299· OSTI ID:388379

Barenboim, G; Bernabeu, J; Vives, O ^[1]

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1. Department de Fisica Teorica, Universitat de Valencia, Valencia (Spain)

We explore the sensitivity to a nonvanishing neutrino mass offered by dynamical observables, i.e., branching ratios and polarizations. The longitudinal polarization in the c.m.frame decreases by a 4{percent} for {ital D}{sup +}{r_arrow}{tau}{sup +}{nu}{sub {tau}} and {ital m}{sub {nu}{sub {tau}}}=24 MeV. Taking advantage of the fact that the polarization is a Lorentz variant quantity, we study the polarization effects in a boosted frame. By means of a neutrino beam, produced by a high velocity boosted parent able to flip the neutrino helicity, we find that an enhanced left-handed neutrino deficit, induced by a Wigner rotation, appears. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388379
• Journal Information: Physical Review Letters, Vol. 77, Issue 16; Other Information: PBD: Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
NEUTRINOS
MASS
D PLUS MESONS
SEMILEPTONIC DECAY
POLARIZATION
BRANCHING RATIO
NEUTRINO BEAMS
HELICITY
DECAY AMPLITUDES
SENSITIVITY