Polarizabilities of the pion and the production of f (1270) mesons in the process. gamma gamma --> pi pi

Journal Article · Sat Nov 30 23:00:00 EST 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5873694

Vall, A N; Kaloshin, A E; Serebryakov, V V

We have found the amplitudes which describe the production of the tensor meson f (1270) in the process ..gamma gamma --> pi pi... The comparison with experimental data indicates the existence of an additional contribution with I = 2 in the neighborhood of the f meson. Supposing that this contribution arises from the asymptotics, we can estimate from experiments on the process ..gamma gamma --> pi pi.. the sum of the polarizabilities of the pion: (..cap alpha..+..beta..)+ = 0.45 x 10/sup -3/ F/sup 3/, and (..cap alpha..+..beta..)0 = 1.71 x 10/sup -3/ F/sup 3/. We also discuss the effect of rescattering in the d wave.

• Research Organization: Irkutsk State University
• OSTI ID: 5873694
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 42:6; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
D WAVES
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
F-1260 RESONANCES
HADRONS
INTERACTIONS
MESONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTON-PHOTON INTERACTIONS
PHYSICAL PROPERTIES
PIONS
POLARIZABILITY
PSEUDOSCALAR MESONS
RESCATTERING
SCATTERING