12-18 August 2012
US/Eastern timezone

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Anomalous soft photon production from QCD vacuum polarization

16 Aug 2012, 16:00
2h
Regency 1/3 and Ambassador ()

Regency 1/3 and Ambassador

Poster Electroweak probes Poster Session Reception

Speaker

Joshua Ilany (Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA)

Description

Anomalous soft photon production beyond that predicted by standard Bremsstrahlung calculations is a ubiquitous feature in high energy processes, from e+e- to heavy ion collisions. We calculate the electromagnetic current due to the QCD vacuum polarization induced by the qq jets in e+e- annihilation using the Schwinger model, and source Maxwell’s equations with it. The predicted soft photon emission reproduces the DELPHI Collaboration’s observations in e+e- annihilation, exhibiting several times the signal expected from traditional Bremsstrahlung radiation. We will discuss the implications of our results for the soft photon production in heavy ion collisions.

Primary author

Joshua Ilany (Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA)

Co-author

Dmitri Kharzeev (Stony Brook U./BNL)

Presentation Materials

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