Anomalous Soft Photons associated with Hadron Production in String Fragmentation

Details Anomalous Soft Photons associated with Hadron Production in String Fragmentation Anomalous Soft Photons associated with Hadron Production in String Fragmentation

2010-11-29

arxiv.org/abs/1011.6265v1

AIP Conf.Proc.1343:447-449,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at the IX International Conference on Quark Confinement and Hadron Spectrum, Madrid, Spain, Aug 30-Sept 3, 2010

Scientific paper

10.1063/1.3575057

The bosonized QCD2+QED2 system for quarks with two flavors contains QCD2 and QED2 bound states, with an isoscalar photon at about 25 MeV and an isovector (I=1,I_3=0) photon at about 44 MeV. Consequently, when a quark and an antiquark at the two ends of a string pulls apart from each other at high energies, hadrons and soft photons will be produced simultaneously in the fragmentation of the string. The production of the QED2 soft photons in association with hadrons may explain the anomalous soft photon data in hadron-hadron collisions and e+e- annihilations at high energies.

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