Dispersion sum rules for pion polarizabilities

Details Dispersion sum rules for pion polarizabilities Dispersion sum rules for pion polarizabilities

2009-09-26

arxiv.org/abs/0909.4849v2

PoS CD09:036,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, to appear in the 6th International Workshop on Chiral Dynamics, CD09, July 6-10, 2009, Bern, Switzerland; minor chang

Scientific paper

An analysis of different dispersion sum rules (DSRs) for the dipole and
quadrupole pion polarizabilities is carried out. We prove the absence of
additional spurious singularities in these approaches. The results of the
calculations of the polarizabilities in the framework of DSRs are compared with
ChPT predictions and with data obtained in different experiments.

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