Gravitational form factors of the neutrino

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.5187· OSTI ID:6582558

Ng, K L ^[1]

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1. Department of Physics, National Taiwan University, Taipei 106 (Taiwan)

The gravitational properties of the neutrino are studied in the weak-field approximation. By imposing the Hermiticity condition, [ital CPT], and [ital CP] invariance on the energy-momentum tensor matrix element, we show that the allowed gravitational form factors for Dirac and Majorana neutrinos are very different. In a [ital CPT]- and [ital CP]-invariant theory, the energy-momentum tensor for a Dirac neutrino of the same species is characterized by four gravitational form factors. As a result of [ital CPT] invariance, the energy-momentum tensor for a Majorana neutrino of the same species has five form factors. In a [ital CP]-invariant theory, if the initial and final Majorana neutrinos have the same (opposite) [ital CP] parity, then only tensor- (pseudotensor-)type transitions are allowed.

• OSTI ID: 6582558
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:11; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
COUPLING
CP INVARIANCE
CPT THEOREM
DIFFERENTIAL EQUATIONS
DIRAC EQUATION
DIRAC FORM FACTORS
ELEMENTARY PARTICLES
ENERGY-MOMENTUM TENSOR
EQUATIONS
FERMIONS
FORM FACTORS
GRAVITATIONAL INTERACTIONS
HERMITIAN OPERATORS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTONS
MAJORANA THEORY
MASSLESS PARTICLES
MATHEMATICAL OPERATORS
NEUTRINOS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PROPERTIES
TENSORS
WAVE EQUATIONS