Photon-photon scattering, pion polarizability, and chiral symmetry

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.137· OSTI ID:6522737

Donoghue, J F; Holstein, B R ^[1]

---

1. Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003 (United States)

Recent attempts to detect the pion polarizability via analysis of [gamma][gamma][r arrow][pi][pi] measurements are examined. The connection between calculations based on dispersion relations and on chiral perturbation theory is established by matching the low-energy chiral amplitude with that given by a full dispersive treatment. Using the values for the polarizability required by chiral symmetry, predicted and experimental cross sections are shown to be in agreement.

• OSTI ID: 6522737
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 48:1; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PHOTON-PHOTON INTERACTIONS
CHIRAL SYMMETRY
DISPERSION RELATIONS
PIONS
PAIR PRODUCTION
POLARIZABILITY
CROSS SECTIONS
PERTURBATION THEORY
BASIC INTERACTIONS
BOSONS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
PSEUDOSCALAR MESONS
SYMMETRY
662390* - Electromagnetic Processes & Properties- (1992-)
662120 - General Theory of Particles & Fields- Symmetry
Conservation Laws
Currents & Their Properties- (1992-)
662130 - General Theory of Particles & Fields- S-Matrix Theory
Relativistic Scattering Theory- (1992-)