Electromagnetic Polarizabilities of Pseudoscalar Goldstone Bosons - INSPIRE

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Electromagnetic Polarizabilities of Pseudoscalar Goldstone Bosons

Veronique Bernard
(
- MIT, LNS
)
,
D. Vautherin
(
- Orsay, IPN
)

Dec, 1988

23 pages

Published in:

Phys.Rev.D 40 (1989) 1615

DOI:

10.1103/PhysRevD.40.1615

Report number:

MIT-CTP-1651,
IPNO/TH-88-62

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Abstract: (APS)

We calculate the electromagnetic polarizabilities of the charged and neutral pions and kaons within the framework of a generalized SU(3) Nambu-Jona-Lasinio model. We obtain strong constraints on the results from chiral symmetry. The possible effects of nonlinearities in the strange-current-quark mass are studied. The values obtained for the charged-pion electromagnetic polarizabilities are within the error bars of the experimental ones. We predict charged-kaon electromagnetic polarizabilities of the order of 10−4 fm3, whereas the ones of the neutral pion and kaon are an order of magnitude smaller.

FIELD THEORETICAL MODEL: JONA-LASINIO-NAMBU
SYMMETRY: SU(3)
SYMMETRY: CHIRAL
DYNAMICAL SYMMETRY BREAKING
BOSON: GOLDSTONE PARTICLE
PSEUDOSCALAR MESON: GOLDSTONE PARTICLE
PI: POLARIZABILITY
K: POLARIZABILITY
MASS SPECTRUM
ELECTROMAGNETIC INTERACTION

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