Scalar mesons and polarizability of the nucleon
Mar, 20086 pages
Part of Scalar mesons and related topics. Proceedings, Workshop honoring Michael Scadron's 70th birthday, SCADRON70, Lisbon, Portugal, February 11-16, 2008, 129-134
Published in:
- AIP Conf.Proc. 1030 (2008) 1, 129-134
Contribution to:
- Published: Aug 1, 2008
e-Print:
- 0803.1074 [hep-ph]
DOI:
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Abstract: (AIP)
It is shown that the scalar mesons σ, f0(980) and a0(980) as t‐channel exchanges quantitatively solve the problem of diamagnetism and give an explanation of the large missing part of the electric polarizability α showing up when only the pion cloud is taken into account. The electric polarizability of the proton αp confirms a two‐photon width of the σ meson of Γσγγ = (2.58±0.26) keV.- 13.60.Hb
- 13.60.Fz
- 14.20.Dh
- nuclear polarisation
- meson decay
- Compton effect
- nuclear reactions and scattering
- spontaneous symmetry breaking
- chiral symmetries
- quark mass
References(9)
Figures(1)