Massive and massless Majorana particles of arbitrary spin: Covariant gauge couplings and production properties

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.43.3748· OSTI ID:5592404

Boudjema, F ^[1]; Hamzaoui, C ^[2]

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1. Laboratoire de Physique Nucleaire, Universite de Montreal, Case 6128, Succursale A, Montreal, Quebec (Canada)
2. Physics Department, McGill University, 3600 University Street, Montreal, Quebec (Canada)

It is shown that massive particles that are their own antiparticles can possess only one specific type of multipolar moments---the so-called toroidal moments. Unlike the familiar charge and magnetic moments, these moments do not directly interact with the (external) static electromagnetic fields but only with the external current, and hence lead to contact interactions. On the other hand, massless Majorana particles, with the exception of those with spin 1/2, do not have {ital any} electromagnetic form factor. It is also found that regardless of the spin of the Majorana particle the differential cross section for the production of a Majorana pair by a spin-1 particle at a high-energy {ital e}{sup +}{ital e{minus}} machine has a unique angular distribution.

• DOE Contract Number: AC02-87ER40325
• OSTI ID: 5592404
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 43:11; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BOSONS
CP INVARIANCE
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC FIELDS
ELECTROMAGNETIC FORM FACTORS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FORM FACTORS
FUNCTIONS
GAUGE INVARIANCE
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-LEPTON INTERACTIONS
MAGNETIC MOMENTS
MAJORANA THEORY
MASS
MASSLESS PARTICLES
MATRIX ELEMENTS
P INVARIANCE
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
SPIN
WAVE FUNCTIONS