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arXiv · 1002.3452

Soft photon anomaly and gauge/string duality

Yoshitaka Hatta·Takahiro Ueda
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Abstract

Motivated by the recent DELPHI report on the anomalous photon production in e^+e^- annihilation, we exactly calculate the inclusive cross section of soft photons in the strong coupling limit of N=4 super Yang-Mills. We find that the energy distribution is that of the Bremsstrahlung, while the angular distribution is spherical. Our result elucidates a new non-perturbative source of soft photons not associated with the final state hadronic Bremsstrahlung.

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Yoshitaka Hatta, Takahiro Ueda. 2010-02-18. Soft photon anomaly and gauge/string duality. https://doi.org/10.1016/j.nuclphysb.2010.04.017

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