Majorana neutrinos and their electromagnetic properties

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.26.1662· OSTI ID:6803640

Kayser, B

To help develop a picture of Majorana neutrinos, we study their electromagnetic properties. We show that CPT invariance forbids a Majorana neutrino from having a magnetic or electric dipole moment. Then, by considering the process ..gamma --> nu..nu-bar, we find the most general expression for the matrix element of the electromagnetic current of a Majorana neutrino. The result is verified in a way which leads us to explore the behavior under parity of such a particle. Next, we see how electromagnetic properties which follow from one-loop diagrams conform to our general results. Finally, we show how the striking electromagnetic differences between Majorana and Dirac neutrinos can become invisible as the neutrino mass goes to zero.

• Research Organization: Division of Physics, National Science Foundation, Washington, D. C. 20550
• OSTI ID: 6803640
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 26:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645302* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Electromagnetic & Weak Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CP INVARIANCE
CPT THEOREM
DIPOLE MOMENTS
EIGENSTATES
ELECTROMAGNETIC FIELDS
ELEMENTARY PARTICLES
FERMIONS
INVARIANCE PRINCIPLES
LEPTONS
MASS
MASSLESS PARTICLES
MATRIX ELEMENTS
NEUTRINOS
T INVARIANCE