Conformal Symmetry and Pion Form Factor: Space- and Time-like Region

Details Conformal Symmetry and Pion Form Factor: Space- and Time-like Region Conformal Symmetry and Pion Form Factor: Space- and Time-like Region

2008-03-18

arxiv.org/abs/0803.2604v3

Phys.Rev.D77:113004,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

8pages, 6figures, changed sentences regarding on the soft-wall AdS/QCD predictions, added references

Scientific paper

10.1103/PhysRevD.77.113004

We extend a recent analysis of the pion electromagnetic form factor constrained by the conformal symmetry to explore the time-like region. We show explicitly that the time-like form factor obtained by the analytic continuation of the space-like form factor correctly satisfies the dispersion relation. Our results indicate that the quark spin and dynamical mass effects are crucial to yield the realistic features of the vector meson dominance phenomena.

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